From f3a8457b45f0aaeab6fee87bf3e331c20ce762a6 Mon Sep 17 00:00:00 2001
From: Martijn Bastiaan <martijn@hmbastiaan.nl>
Date: Sat, 16 Jan 2021 14:27:26 +0100
Subject: [PATCH] Use 'downloads.haskell.org' instead of GitHub assets

GitHub serves files from a single geographical location, severely reducing
download speeds for non-US users. Even worse, some (European) ISPs seem
to have peering issues limiting download speeds to sub-1 Mbps at times.

This commit changes 'stack-setup-2.yaml' to use
'downloads.haskell.org' instead of GitHub Assets. At the time of
writing, the former uses a proper CDN (Fastly) to deliver content which
should result in consistent speeds around the globe.

Discussion on:

  https://github.com/commercialhaskell/stack/issues/2240
---
 stack/stack-setup-2.yaml | 612 +++++++++++++++++++++++++--------------
 1 file changed, 392 insertions(+), 220 deletions(-)

diff --git a/stack/stack-setup-2.yaml b/stack/stack-setup-2.yaml
index 5eeae2c..65d5165 100644
--- a/stack/stack-setup-2.yaml
+++ b/stack/stack-setup-2.yaml
@@ -104,101 +104,114 @@ ghc:
             content-length: 110798512
             sha1: 2ba321f45918f477a1c69d153ca793b4a11540e0
         8.0.2:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.0.2-release/ghc-8.0.2-i386-deb7-linux.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.0.2/ghc-8.0.2-i386-deb7-linux.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.0.2-release/ghc-8.0.2-i386-deb7-linux.tar.xz"
             content-length: 112800144
             sha1: d99aecac26d94fd0d3b996c1a48c1aec9745cd59
         8.2.1:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.2.1-release/ghc-8.2.1-i386-deb7-linux.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.2.1/ghc-8.2.1-i386-deb7-linux.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.2.1-release/ghc-8.2.1-i386-deb7-linux.tar.xz"
             content-length: 124942812
             sha1: 17eef9b2151a9bfc5aee93b11cbe76f1a5a2eb02
         8.2.2:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.2.2-release/ghc-8.2.2-i386-deb7-linux.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.2.2/ghc-8.2.2-i386-deb7-linux.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.2.2-release/ghc-8.2.2-i386-deb7-linux.tar.xz"
             content-length: 125076928
             sha1: 862a3ddf030bb3ded2de5e1842a7f432ac0f3158
             sha256: cd18766b1a9b74fc6c90003a719ecab158f281f9a755d8b1bd3fd764ba6947b5
         8.4.1:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.4.1-release/ghc-8.4.1-i386-deb8-linux.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.4.1/ghc-8.4.1-i386-deb8-linux.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.4.1-release/ghc-8.4.1-i386-deb8-linux.tar.xz"
             content-length: 147022744
             sha1: 07f80c51632b17c60d4257a625c88c46e7de35df
             sha256: c56c589c76c7ddcb77cdbef885a811761e669d3e76868b723d5be56dedcd4f69
         8.4.2:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.4.2-release/ghc-8.4.2-i386-deb8-linux.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.4.2/ghc-8.4.2-i386-deb8-linux.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.4.2-release/ghc-8.4.2-i386-deb8-linux.tar.xz"
             content-length: 147544236
             sha1: c9d9acd02d6b0aeb53cd13ac2c5e532904884a3a
             sha256: 2d849c30b4c1eac25dc74333501920921e22fa483153f404993808bbda93df05
         8.4.3:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.4.3-release/ghc-8.4.3-i386-deb8-linux.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.4.3/ghc-8.4.3-i386-deb8-linux.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.4.3-release/ghc-8.4.3-i386-deb8-linux.tar.xz"
             content-length: 147610164
             sha1: bb8b3153d38111d6a0d2ca9a082045b71f6349a0
             sha256: f5763983a26dedd88b65a0b17267359a3981b83a642569b26334423f684f8b8c
         8.4.4:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.4.4-release/ghc-8.4.4-i386-deb8-linux.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.4.4/ghc-8.4.4-i386-deb8-linux.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.4.4-release/ghc-8.4.4-i386-deb8-linux.tar.xz"
             content-length: 147557416
             sha1: 84f83d60ea415df6341df4047e95eadd155987dc
             sha256: 678bafaabea6af70ba71ccf0210bb437f9f5591ec28ac1cbbbd5f7aa6894e450
         8.6.1:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.6.1-release/ghc-8.6.1-i386-deb8-linux.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.6.1/ghc-8.6.1-i386-deb8-linux.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.6.1-release/ghc-8.6.1-i386-deb8-linux.tar.xz"
             content-length: 177317168
             sha1: 8cd4c56adb4bb269d2da87eea157857d3b76c037
             sha256: 83573af96e3dec8f67c1a844512f92cbf7d51ae7ceca53d948fc2a3300abd05c
         8.6.2:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.6.2-release/ghc-8.6.2-i386-deb8-linux.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.6.2/ghc-8.6.2-i386-deb8-linux.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.6.2-release/ghc-8.6.2-i386-deb8-linux.tar.xz"
             content-length: 177362500
             sha1: fd4e000a3a077ce9434ae852dd3798ec9853ccc0
             sha256: a288026d9ef22f7ac387edab6b29ef7dcb3b28945c8ea532a15c1fa35d4733ed
         8.6.3:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.6.3-release/ghc-8.6.3-i386-deb8-linux.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.6.3/ghc-8.6.3-i386-deb8-linux.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.6.3-release/ghc-8.6.3-i386-deb8-linux.tar.xz"
             content-length: 177351188
             sha1: 6965ef1875423532850f61a6a8520be3676ee715
             sha256: b57070ba8c70b1333a3e47ce124baf791be39c20a592954772532fd6dd51882f
         8.6.4:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.6.4-release/ghc-8.6.4-i386-deb9-linux.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.6.4/ghc-8.6.4-i386-deb9-linux.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.6.4-release/ghc-8.6.4-i386-deb9-linux.tar.xz"
             content-length: 186494668
             sha1: 59ed4f57e6079470db5d7b5c4a6886d8639bc544
             sha256: 5e2ce88f4d13d23ac37e278e0c7b51c801008931359b9fa8a631d804d2da552c
         8.6.5:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.6.5-release/ghc-8.6.5-i386-deb9-linux.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.6.5/ghc-8.6.5-i386-deb9-linux.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.6.5-release/ghc-8.6.5-i386-deb9-linux.tar.xz"
             content-length: 187048424
             sha1: 3aab514beadef20d1c31eaa165ae987eedc1c686
             sha256: 1cddb907393a669342b1a922dd16d505d9d93d50bd9433a54a8162f8701250dc
         8.8.1:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.8.1-release/ghc-8.8.1-i386-deb9-linux.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.8.1/ghc-8.8.1-i386-deb9-linux.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.8.1-release/ghc-8.8.1-i386-deb9-linux.tar.xz"
             content-length: 204669320
             sha1: 5c9e1cad872d09f70d493744241d85e0e4b2d772
             sha256: 3d3bb75aff2dd79ec87ace10483368681fbc328ff00ebf15edad33420f00f7f5
         8.8.2:
-            # Mirrored from http://downloads.haskell.org/~ghc/8.8.2/ghc-8.8.2-i386-deb9-linux.tar.xz
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.8.2-release/ghc-8.8.2-i386-deb9-linux.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.8.2/ghc-8.8.2-i386-deb9-linux.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.8.2-release/ghc-8.8.2-i386-deb9-linux.tar.xz"
             content-length: 204955748
             sha1: 9c6c8dc35eddef98865d64f2de6e7643b07a5570
             sha256: ad1c628082c32635a436905a7ff83eaa4246347d869be5ef6b33c3bf85e8f00c
         8.8.3:
-            # Mirrored from http://downloads.haskell.org/~ghc/8.8.3/ghc-8.8.3-i386-deb9-linux.tar.xz
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.8.3-release/ghc-8.8.3-i386-deb9-linux.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.8.3/ghc-8.8.3-i386-deb9-linux.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.8.3-release/ghc-8.8.3-i386-deb9-linux.tar.xz"
             content-length: 204980812
             sha1: ca5dccb4cae10fadd72c5918f45a45fad33f85fb
             sha256: 441e2c7a4fc83ebf179712bd939b555cda7c6633545b7c8ac38049f9d85003ae
         8.8.4:
-            # Mirrored from http://downloads.haskell.org/~ghc/8.8.4/ghc-8.8.4-i386-deb9-linux.tar.xz
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.8.4-release/ghc-8.8.4-i386-deb9-linux.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.8.4/ghc-8.8.4-i386-deb9-linux.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.8.4-release/ghc-8.8.4-i386-deb9-linux.tar.xz"
             content-length: 210077656
             sha1: eefb902bb3373925f596f1f1838f112caa95cd39
             sha256: 43dd954910c9027694312cef0aabc7774d102d0422b7172802cfb72f7d5da3a0
         8.10.1:
-            # Mirrored from http://downloads.haskell.org/~ghc/8.10.1/ghc-8.10.1-i386-deb9-linux.tar.xz
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.10.1-release/ghc-8.10.1-i386-deb9-linux.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.10.1/ghc-8.10.1-i386-deb9-linux.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.10.1-release/ghc-8.10.1-i386-deb9-linux.tar.xz"
             content-length: 215852640
             sha1: 30b28ec4d3b6af5eb3f25668a2567d9ba5c06de0
             sha256: 8b53eef2c827b5f634d72920a93c0c9dd66ea288691a2bfe28def45d3c686ee2
         8.10.2:
-            # Mirrored from http://downloads.haskell.org/~ghc/8.10.2/ghc-8.10.2-i386-deb9-linux.tar.xz
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.10.2-release/ghc-8.10.2-i386-deb9-linux.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.10.2/ghc-8.10.2-i386-deb9-linux.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.10.2-release/ghc-8.10.2-i386-deb9-linux.tar.xz"
             content-length: 214239684
             sha1: ceb3bc9c2befdf6e44ab18b298d09fc122a77b31
             sha256: 9dae2a86ad43d08f72c783542c944d1556b075aa20a8063efae5034ea88e7c2f
         8.10.3:
-            # Mirrored from http://downloads.haskell.org/~ghc/8.10.3/ghc-8.10.3-i386-deb9-linux.tar.xz
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.10.3-release/ghc-8.10.3-i386-deb9-linux.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.10.3/ghc-8.10.3-i386-deb9-linux.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.10.3-release/ghc-8.10.3-i386-deb9-linux.tar.xz"
             content-length: 215707372
             sha1: a6685fe6ed0362862d810229a83ba813c57e7c2d
             sha256: f0addd2a16b705f58ff9e8702c3ddf3e2d6bd0d3555707b5b5095e51bafee7b1
@@ -225,65 +238,78 @@ ghc:
             content-length: 110798512
             sha1: 2ba321f45918f477a1c69d153ca793b4a11540e0
         8.0.2:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.0.2-release/ghc-8.0.2-i386-deb8-linux.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.0.2/ghc-8.0.2-i386-deb8-linux.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.0.2-release/ghc-8.0.2-i386-deb8-linux.tar.xz"
             content-length: 112576160
             sha1: bb5e2c2989836924db915f97256c8c954e1d42ed
         8.2.1:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.2.1-release/ghc-8.2.1-i386-deb8-linux.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.2.1/ghc-8.2.1-i386-deb8-linux.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.2.1-release/ghc-8.2.1-i386-deb8-linux.tar.xz"
             content-length: 122702996
             sha1: 6f16930d7f189c74f4fd0bf082036945ddcfb41c
         8.2.2:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.2.2-release/ghc-8.2.2-i386-deb8-linux.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.2.2/ghc-8.2.2-i386-deb8-linux.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.2.2-release/ghc-8.2.2-i386-deb8-linux.tar.xz"
             content-length: 122791056
             sha1: 0bb8d532e7d7967a1cc4941cb4fa1fa62d665bc9
             sha256: 9e67d72d76482e0ba91c718e727b00386a1a12a32ed719714976dc56ca8c8223
         8.4.1:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.4.1-release/ghc-8.4.1-i386-deb8-linux.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.4.1/ghc-8.4.1-i386-deb8-linux.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.4.1-release/ghc-8.4.1-i386-deb8-linux.tar.xz"
             content-length: 147022744
             sha1: 07f80c51632b17c60d4257a625c88c46e7de35df
             sha256: c56c589c76c7ddcb77cdbef885a811761e669d3e76868b723d5be56dedcd4f69
         8.4.2:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.4.2-release/ghc-8.4.2-i386-deb8-linux.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.4.2/ghc-8.4.2-i386-deb8-linux.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.4.2-release/ghc-8.4.2-i386-deb8-linux.tar.xz"
             content-length: 147544236
             sha1: c9d9acd02d6b0aeb53cd13ac2c5e532904884a3a
             sha256: 2d849c30b4c1eac25dc74333501920921e22fa483153f404993808bbda93df05
         8.4.3:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.4.3-release/ghc-8.4.3-i386-deb8-linux.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.4.3/ghc-8.4.3-i386-deb8-linux.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.4.3-release/ghc-8.4.3-i386-deb8-linux.tar.xz"
             content-length: 147610164
             sha1: bb8b3153d38111d6a0d2ca9a082045b71f6349a0
             sha256: f5763983a26dedd88b65a0b17267359a3981b83a642569b26334423f684f8b8c
         8.4.4:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.4.4-release/ghc-8.4.4-i386-deb8-linux.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.4.4/ghc-8.4.4-i386-deb8-linux.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.4.4-release/ghc-8.4.4-i386-deb8-linux.tar.xz"
             content-length: 147557416
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             sha256: 678bafaabea6af70ba71ccf0210bb437f9f5591ec28ac1cbbbd5f7aa6894e450
         8.6.1:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.6.1-release/ghc-8.6.1-i386-deb8-linux.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.6.1/ghc-8.6.1-i386-deb8-linux.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.6.1-release/ghc-8.6.1-i386-deb8-linux.tar.xz"
             content-length: 177317168
             sha1: 8cd4c56adb4bb269d2da87eea157857d3b76c037
             sha256: 83573af96e3dec8f67c1a844512f92cbf7d51ae7ceca53d948fc2a3300abd05c
         8.6.2:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.6.2-release/ghc-8.6.2-i386-deb8-linux.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.6.2/ghc-8.6.2-i386-deb8-linux.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.6.2-release/ghc-8.6.2-i386-deb8-linux.tar.xz"
             content-length: 177362500
             sha1: fd4e000a3a077ce9434ae852dd3798ec9853ccc0
             sha256: a288026d9ef22f7ac387edab6b29ef7dcb3b28945c8ea532a15c1fa35d4733ed
         8.6.3:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.6.3-release/ghc-8.6.3-i386-deb8-linux.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.6.3/ghc-8.6.3-i386-deb8-linux.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.6.3-release/ghc-8.6.3-i386-deb8-linux.tar.xz"
             content-length: 177351188
             sha1: 6965ef1875423532850f61a6a8520be3676ee715
             sha256: b57070ba8c70b1333a3e47ce124baf791be39c20a592954772532fd6dd51882f
         8.6.4:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.6.4-release/ghc-8.6.4-i386-deb9-linux.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.6.4/ghc-8.6.4-i386-deb9-linux.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.6.4-release/ghc-8.6.4-i386-deb9-linux.tar.xz"
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             sha256: 5e2ce88f4d13d23ac37e278e0c7b51c801008931359b9fa8a631d804d2da552c
         8.6.5:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.6.5-release/ghc-8.6.5-i386-deb9-linux.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.6.5/ghc-8.6.5-i386-deb9-linux.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.6.5-release/ghc-8.6.5-i386-deb9-linux.tar.xz"
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             sha256: 1cddb907393a669342b1a922dd16d505d9d93d50bd9433a54a8162f8701250dc
         8.8.1:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.8.1-release/ghc-8.8.1-i386-deb9-linux.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.8.1/ghc-8.8.1-i386-deb9-linux.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.8.1-release/ghc-8.8.1-i386-deb9-linux.tar.xz"
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             sha256: 3d3bb75aff2dd79ec87ace10483368681fbc328ff00ebf15edad33420f00f7f5
@@ -363,101 +389,114 @@ ghc:
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         8.0.2:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.0.2-release/ghc-8.0.2-x86_64-deb7-linux.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.0.2/ghc-8.0.2-x86_64-deb7-linux.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.0.2-release/ghc-8.0.2-x86_64-deb7-linux.tar.xz"
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             sha1: 929e96628276190c6083e083e0a00265a46edce7
         8.2.1:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.2.1-release/ghc-8.2.1-x86_64-deb7-linux.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.2.1/ghc-8.2.1-x86_64-deb7-linux.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.2.1-release/ghc-8.2.1-x86_64-deb7-linux.tar.xz"
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             sha1: 510c37cb5e285a1720c3ba705867b637ca5de001
         8.2.2:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.2.2-release/ghc-8.2.2-x86_64-deb7-linux.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.2.2/ghc-8.2.2-x86_64-deb7-linux.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.2.2-release/ghc-8.2.2-x86_64-deb7-linux.tar.xz"
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             sha256: cd7afbca54edf9890da9f432c63366556246c85c1198e40c99df5af01c555834
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-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.4.1-release/ghc-8.4.1-x86_64-deb8-linux.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.4.1/ghc-8.4.1-x86_64-deb8-linux.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.4.1-release/ghc-8.4.1-x86_64-deb8-linux.tar.xz"
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             sha256: 427c77a934b30c3f1de992c38c072afb4323fe6fb30dbac919ca8cb6ae98fbd9
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-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.4.2-release/ghc-8.4.2-x86_64-deb8-linux.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.4.2/ghc-8.4.2-x86_64-deb8-linux.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.4.2-release/ghc-8.4.2-x86_64-deb8-linux.tar.xz"
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             sha1: af9058feab34ea81f31e328a233baa5c22a29f08
             sha256: 246f66eb56f4ad0f1c7755502cfc8f9972f2d067dede17e151f6f479c1f76fbd
         8.4.3:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.4.3-release/ghc-8.4.3-x86_64-deb8-linux.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.4.3/ghc-8.4.3-x86_64-deb8-linux.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.4.3-release/ghc-8.4.3-x86_64-deb8-linux.tar.xz"
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             sha256: 30a402c6d4754a6c020e0547f19ae3ac42e907e35349aa932d347f73e421a8e2
         8.4.4:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.4.4-release/ghc-8.4.4-x86_64-deb8-linux.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.4.4/ghc-8.4.4-x86_64-deb8-linux.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.4.4-release/ghc-8.4.4-x86_64-deb8-linux.tar.xz"
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             sha256: 4c2a8857f76b7f3e34ecba0b51015d5cb8b767fe5377a7ec477abde10705ab1a
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-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.6.1-release/ghc-8.6.1-x86_64-deb8-linux.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.6.1/ghc-8.6.1-x86_64-deb8-linux.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.6.1-release/ghc-8.6.1-x86_64-deb8-linux.tar.xz"
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             sha256: 6d8784401b7dd80c90fa17306ec0539920e3987399a2c7ef247989e53197dc42
         8.6.2:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.6.2-release/ghc-8.6.2-x86_64-deb8-linux.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.6.2/ghc-8.6.2-x86_64-deb8-linux.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.6.2-release/ghc-8.6.2-x86_64-deb8-linux.tar.xz"
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             sha256: 13f96e8b83bb5bb60f955786ff9085744c24927a33be8a17773f84c7c248533a
         8.6.3:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.6.3-release/ghc-8.6.3-x86_64-deb8-linux.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.6.3/ghc-8.6.3-x86_64-deb8-linux.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.6.3-release/ghc-8.6.3-x86_64-deb8-linux.tar.xz"
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             sha1: 0ee1ed815f24b6bb51a466cab8d2da7683592a9a
             sha256: 291ca565374f4d51cc311488581f3279d3167a064fabfd4a6722fe2bd4532fd5
         8.6.4:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.6.4-release/ghc-8.6.4-x86_64-deb8-linux.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.6.4/ghc-8.6.4-x86_64-deb8-linux.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.6.4-release/ghc-8.6.4-x86_64-deb8-linux.tar.xz"
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         8.6.5:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.6.5-release/ghc-8.6.5-x86_64-deb8-linux.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.6.5/ghc-8.6.5-x86_64-deb8-linux.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.6.5-release/ghc-8.6.5-x86_64-deb8-linux.tar.xz"
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-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.8.1-release/ghc-8.8.1-x86_64-deb8-linux.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.8.1/ghc-8.8.1-x86_64-deb8-linux.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.8.1-release/ghc-8.8.1-x86_64-deb8-linux.tar.xz"
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             sha256: fd96eb851971fbc3332bf2fa7821732cfa8b37e5a076a69f6a06f83f0ea7ccc5
         8.8.2:
-            # Mirrored from http://downloads.haskell.org/~ghc/8.8.2/ghc-8.8.2-x86_64-deb8-linux.tar.xz
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.8.2-release/ghc-8.8.2-x86_64-deb8-linux.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.8.2/ghc-8.8.2-x86_64-deb8-linux.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.8.2-release/ghc-8.8.2-x86_64-deb8-linux.tar.xz"
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             sha256: fbe69652eba75dadb758d00292247d17fb018c29cac5acd79843e56311256c9f
         8.8.3:
-            # Mirrored from http://downloads.haskell.org/~ghc/8.8.3/ghc-8.8.3-x86_64-deb8-linux.tar.xz
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.8.3-release/ghc-8.8.3-x86_64-deb8-linux.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.8.3/ghc-8.8.3-x86_64-deb8-linux.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.8.3-release/ghc-8.8.3-x86_64-deb8-linux.tar.xz"
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         8.8.4:
-            # Mirrored from http://downloads.haskell.org/~ghc/8.8.4/ghc-8.8.4-x86_64-deb9-linux.tar.xz
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.8.4-release/ghc-8.8.4-x86_64-deb9-linux.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.8.4/ghc-8.8.4-x86_64-deb9-linux.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.8.4-release/ghc-8.8.4-x86_64-deb9-linux.tar.xz"
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         8.10.1:
-            # Mirrored from http://downloads.haskell.org/~ghc/8.10.1/ghc-8.10.1-x86_64-deb9-linux.tar.xz
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.10.1-release/ghc-8.10.1-x86_64-deb9-linux.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.10.1/ghc-8.10.1-x86_64-deb9-linux.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.10.1-release/ghc-8.10.1-x86_64-deb9-linux.tar.xz"
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             sha256: d1cf7886f27af070f3b7dbe1975a78b43ef2d32b86362cbe953e79464fe70761
         8.10.2:
-            # Mirrored from http://downloads.haskell.org/~ghc/8.10.2/ghc-8.10.2-x86_64-deb9-linux.tar.xz
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.10.2-release/ghc-8.10.2-x86_64-deb9-linux.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.10.2/ghc-8.10.2-x86_64-deb9-linux.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.10.2-release/ghc-8.10.2-x86_64-deb9-linux.tar.xz"
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             sha256: 4dbe3b479e76767bfeb4cbb7a4db8b761c4720266193483ca370b2ace3f10f7c
         8.10.3:
-            # Mirrored from http://downloads.haskell.org/~ghc/8.10.3/ghc-8.10.3-x86_64-deb9-linux.tar.xz
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.10.3-release/ghc-8.10.3-x86_64-deb9-linux.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.10.3/ghc-8.10.3-x86_64-deb9-linux.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.10.3-release/ghc-8.10.3-x86_64-deb9-linux.tar.xz"
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             sha256: 95e4aadea30701fe5ab84d15f757926d843ded7115e11c4cd827809ca830718d
@@ -484,65 +523,78 @@ ghc:
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-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.0.2-release/ghc-8.0.2-x86_64-deb8-linux.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.0.2/ghc-8.0.2-x86_64-deb8-linux.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.0.2-release/ghc-8.0.2-x86_64-deb8-linux.tar.xz"
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             sha1: f298b7d0f37cc9ded7ac66b2662b0fa5ac6d0809
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-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.2.1-release/ghc-8.2.1-x86_64-deb8-linux.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.2.1/ghc-8.2.1-x86_64-deb8-linux.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.2.1-release/ghc-8.2.1-x86_64-deb8-linux.tar.xz"
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-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.2.2-release/ghc-8.2.2-x86_64-deb8-linux.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.2.2/ghc-8.2.2-x86_64-deb8-linux.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.2.2-release/ghc-8.2.2-x86_64-deb8-linux.tar.xz"
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             sha1: 7d0312d0ad3e5c5602e1102d6454ff390e961851
             sha256: 48e205c62b9dc1ccf6739a4bc15a71e56dde2f891a9d786a1b115f0286111b2a
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-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.4.1-release/ghc-8.4.1-x86_64-deb8-linux.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.4.1/ghc-8.4.1-x86_64-deb8-linux.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.4.1-release/ghc-8.4.1-x86_64-deb8-linux.tar.xz"
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             sha1: 6f62cc1287c314b540cf6436cba1766caf044cb2
             sha256: 427c77a934b30c3f1de992c38c072afb4323fe6fb30dbac919ca8cb6ae98fbd9
         8.4.2:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.4.2-release/ghc-8.4.2-x86_64-deb8-linux.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.4.2/ghc-8.4.2-x86_64-deb8-linux.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.4.2-release/ghc-8.4.2-x86_64-deb8-linux.tar.xz"
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             sha1: af9058feab34ea81f31e328a233baa5c22a29f08
             sha256: 246f66eb56f4ad0f1c7755502cfc8f9972f2d067dede17e151f6f479c1f76fbd
         8.4.3:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.4.3-release/ghc-8.4.3-x86_64-deb8-linux.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.4.3/ghc-8.4.3-x86_64-deb8-linux.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.4.3-release/ghc-8.4.3-x86_64-deb8-linux.tar.xz"
             content-length: 151870024
             sha1: ece4a75cefa21992683266a1f8fad995dc75245f
             sha256: 30a402c6d4754a6c020e0547f19ae3ac42e907e35349aa932d347f73e421a8e2
         8.4.4:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.4.4-release/ghc-8.4.4-x86_64-deb8-linux.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.4.4/ghc-8.4.4-x86_64-deb8-linux.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.4.4-release/ghc-8.4.4-x86_64-deb8-linux.tar.xz"
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             sha1: f132449742711cd4ef8534067f9dbb09bfae20e7
             sha256: 4c2a8857f76b7f3e34ecba0b51015d5cb8b767fe5377a7ec477abde10705ab1a
         8.6.1:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.6.1-release/ghc-8.6.1-x86_64-deb8-linux.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.6.1/ghc-8.6.1-x86_64-deb8-linux.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.6.1-release/ghc-8.6.1-x86_64-deb8-linux.tar.xz"
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             sha1: 6ff44e86582c8360620b8f3e353e208aeb72c58e
             sha256: 6d8784401b7dd80c90fa17306ec0539920e3987399a2c7ef247989e53197dc42
         8.6.2:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.6.2-release/ghc-8.6.2-x86_64-deb8-linux.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.6.2/ghc-8.6.2-x86_64-deb8-linux.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.6.2-release/ghc-8.6.2-x86_64-deb8-linux.tar.xz"
             content-length: 179351624
             sha1: 67b0e8ee52f20cf2797b1ac81af6f89235dc8e50
             sha256: 13f96e8b83bb5bb60f955786ff9085744c24927a33be8a17773f84c7c248533a
         8.6.3:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.6.3-release/ghc-8.6.3-x86_64-deb8-linux.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.6.3/ghc-8.6.3-x86_64-deb8-linux.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.6.3-release/ghc-8.6.3-x86_64-deb8-linux.tar.xz"
             content-length: 179335960
             sha1: 0ee1ed815f24b6bb51a466cab8d2da7683592a9a
             sha256: 291ca565374f4d51cc311488581f3279d3167a064fabfd4a6722fe2bd4532fd5
         8.6.4:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.6.4-release/ghc-8.6.4-x86_64-deb8-linux.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.6.4/ghc-8.6.4-x86_64-deb8-linux.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.6.4-release/ghc-8.6.4-x86_64-deb8-linux.tar.xz"
             content-length: 185834596
             sha1: 434988420a61279d0fa9d61155cd7aeeba33c308
             sha256: 34ef5fc8ddf2fc32a027180bea5b1c8a81ea840c87faace2977a572188d4b42d
         8.6.5:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.6.5-release/ghc-8.6.5-x86_64-deb8-linux.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.6.5/ghc-8.6.5-x86_64-deb8-linux.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.6.5-release/ghc-8.6.5-x86_64-deb8-linux.tar.xz"
             content-length: 184373828
             sha1: a39933ccfcb3fc10fe8f0be3b1f0e61dcb4a3e34
             sha256: c419fd0aa9065fe4d2eb9a248e323860c696ddf3859749ca96a84938aee49107
         8.8.1:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.8.1-release/ghc-8.8.1-x86_64-deb8-linux.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.8.1/ghc-8.8.1-x86_64-deb8-linux.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.8.1-release/ghc-8.8.1-x86_64-deb8-linux.tar.xz"
             content-length: 195900372
             sha1: 0463026056657ef024a608fb41b406cb69deaf85
             sha256: fd96eb851971fbc3332bf2fa7821732cfa8b37e5a076a69f6a06f83f0ea7ccc5
@@ -618,7 +670,8 @@ ghc:
             content-length: 108876952
             sha1: 80d7f75032e3fd64f63cf554b4ad3dd4fce4a9ae
         8.0.2:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.0.2-release/ghc-8.0.2-i386-centos67-linux.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.0.2/ghc-8.0.2-i386-centos67-linux.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.0.2-release/ghc-8.0.2-i386-centos67-linux.tar.xz"
             content-length: 111819504
             sha1: 738ff402074834ee1ad999d5d61f3d0c0d1dd77f
 
@@ -640,7 +693,8 @@ ghc:
             content-length: 108876952
             sha1: 80d7f75032e3fd64f63cf554b4ad3dd4fce4a9ae
         8.0.2:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.0.2-release/ghc-8.0.2-i386-centos67-linux.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.0.2/ghc-8.0.2-i386-centos67-linux.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.0.2-release/ghc-8.0.2-i386-centos67-linux.tar.xz"
             content-length: 111819504
             sha1: 738ff402074834ee1ad999d5d61f3d0c0d1dd77f
         # Since GHC 8.0.2, these should match linux32-gmp4 (without any additional configure-env)
@@ -665,19 +719,23 @@ ghc:
             content-length: 110353140
             sha1: bcdf7664d008c8e4e24fc7c044b9d316353cf349
         8.0.2:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.0.2-release/ghc-8.0.2-x86_64-centos67-linux.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.0.2/ghc-8.0.2-x86_64-centos67-linux.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.0.2-release/ghc-8.0.2-x86_64-centos67-linux.tar.xz"
             content-length: 111869204
             sha1: 937df64b3b8358b87e63059d5b8b73890aea5585
         8.2.1:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.2.1-release/ghc-8.2.1-x86_64-centos67-linux.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.2.1/ghc-8.2.1-x86_64-centos67-linux.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.2.1-release/ghc-8.2.1-x86_64-centos67-linux.tar.xz"
             content-length: 119576128
             sha1: b4d7fba53f87f3d11048b56a4190cc2cf5208dc6
         8.2.2:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.2.2-release/ghc-8.2.2-x86_64-centos67-linux.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.2.2/ghc-8.2.2-x86_64-centos67-linux.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.2.2-release/ghc-8.2.2-x86_64-centos67-linux.tar.xz"
             content-length: 121107428
             sha1: d66dc65a8e3b534ae319ba791e77c4fec5bc1fae
         8.4.2:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.4.2-release/ghc-8.4.2-x86_64-centos67-linux.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.4.2/ghc-8.4.2-x86_64-centos67-linux.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.4.2-release/ghc-8.4.2-x86_64-centos67-linux.tar.xz"
             content-length: 138760652
             sha1: 84f1c7f999309dbe9e7a2a7eb80349284b71847d
             sha256: 28c31489ed9a83af4400685ec8bc72a6d43d08958d75b2dc35d29a894a5c9d93
@@ -700,19 +758,23 @@ ghc:
             content-length: 110353140
             sha1: bcdf7664d008c8e4e24fc7c044b9d316353cf349
         8.0.2:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.0.2-release/ghc-8.0.2-x86_64-centos67-linux.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.0.2/ghc-8.0.2-x86_64-centos67-linux.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.0.2-release/ghc-8.0.2-x86_64-centos67-linux.tar.xz"
             content-length: 111869204
             sha1: 937df64b3b8358b87e63059d5b8b73890aea5585
         8.2.1:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.2.1-release/ghc-8.2.1-x86_64-centos67-linux.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.2.1/ghc-8.2.1-x86_64-centos67-linux.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.2.1-release/ghc-8.2.1-x86_64-centos67-linux.tar.xz"
             content-length: 119576128
             sha1: b4d7fba53f87f3d11048b56a4190cc2cf5208dc6
         8.2.2:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.2.2-release/ghc-8.2.2-x86_64-centos67-linux.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.2.2/ghc-8.2.2-x86_64-centos67-linux.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.2.2-release/ghc-8.2.2-x86_64-centos67-linux.tar.xz"
             content-length: 121107428
             sha1: d66dc65a8e3b534ae319ba791e77c4fec5bc1fae
         8.4.2:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.4.2-release/ghc-8.4.2-x86_64-centos67-linux.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.4.2/ghc-8.4.2-x86_64-centos67-linux.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.4.2-release/ghc-8.4.2-x86_64-centos67-linux.tar.xz"
             content-length: 138760652
             sha1: 84f1c7f999309dbe9e7a2a7eb80349284b71847d
             sha256: 28c31489ed9a83af4400685ec8bc72a6d43d08958d75b2dc35d29a894a5c9d93
@@ -753,88 +815,98 @@ ghc:
             sha1: 124b0f81079cecfa5813cbed0b37cd4bff89345d
             sha256: 282094d67a786e975d71022f1c9650d19f6f5eeb6a618a9c14dd9cccf1eff9f7
         8.4.1:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.4.1-release/ghc-8.4.1-x86_64-fedora27-linux.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.4.1/ghc-8.4.1-x86_64-fedora27-linux.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.4.1-release/ghc-8.4.1-x86_64-fedora27-linux.tar.xz"
             content-length: 152583608
             sha1: 76a63daba744d94ca870ea17696e5f69293cdaa0
             sha256: 89328a013e64b9b56825a9071fea5616ddd623d37fd41e8fb913dfebc609e7ea
         8.4.2:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.4.2-release/ghc-8.4.2-x86_64-fedora27-linux.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.4.2/ghc-8.4.2-x86_64-fedora27-linux.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.4.2-release/ghc-8.4.2-x86_64-fedora27-linux.tar.xz"
             content-length: 152889300
             sha1: 0765e4af6e5db27bfc0c1782678611c4680e43bf
             sha256: d057b5c833596dbe4ae5d0dc2994f6cc5d0f4c2a21ea1d7900821d165fd4e846
         8.4.3:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.4.3-release/ghc-8.4.3-x86_64-fedora27-linux.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.4.3/ghc-8.4.3-x86_64-fedora27-linux.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.4.3-release/ghc-8.4.3-x86_64-fedora27-linux.tar.xz"
             content-length: 152892592
             sha1: 8d4328ebfd10c08c9b8e221df27c54e5d035017c
             sha256: 269e7a4d3f336491b88409a020998122b30a3a729af78d33be86d3b3f8000c3e
         8.4.4:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.4.4-release/ghc-8.4.4-x86_64-fedora27-linux.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.4.4/ghc-8.4.4-x86_64-fedora27-linux.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.4.4-release/ghc-8.4.4-x86_64-fedora27-linux.tar.xz"
             content-length: 152903812
             sha1: cc71b6329b930d317a7efff069ad80975b8b5fb9
             sha256: 8ab2befddc14d1434d0aad0c5d3c7e0c2b78ff84caa3429fa62527bfc6b86095
         8.6.1:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.6.1-release/ghc-8.6.1-x86_64-fedora27-linux.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.6.1/ghc-8.6.1-x86_64-fedora27-linux.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.6.1-release/ghc-8.6.1-x86_64-fedora27-linux.tar.xz"
             content-length: 182150376
             sha1: 6878d9017edfd4341b0f9dd598a7bc0c229d84e4
             sha256: da903fbcf11ee6c977a8b7dac3f04dbc098d674def587880b6624b8f32588beb
         8.6.2:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.6.2-release/ghc-8.6.2-x86_64-fedora27-linux.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.6.2/ghc-8.6.2-x86_64-fedora27-linux.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.6.2-release/ghc-8.6.2-x86_64-fedora27-linux.tar.xz"
             content-length: 182230252
             sha1: e1c195d4f15a5762cf58aabf129989291113a652
             sha256: 702aa5dfa1639c37953ceb7571a5057d9fb0562aecb197b277953a037d78047d
         8.6.3:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.6.3-release/ghc-8.6.3-x86_64-fedora27-linux.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.6.3/ghc-8.6.3-x86_64-fedora27-linux.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.6.3-release/ghc-8.6.3-x86_64-fedora27-linux.tar.xz"
             content-length: 182356948
             sha1: ca192a146e70996d31a0aae8ec7de20608508d10
             sha256: 52ae92f4e8bb2ac0b7847287ea3da37081f5f7bf8bbb7c78ac35fde537d1a89f
         8.6.4:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.6.4-release/ghc-8.6.4-x86_64-fedora27-linux.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.6.4/ghc-8.6.4-x86_64-fedora27-linux.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.6.4-release/ghc-8.6.4-x86_64-fedora27-linux.tar.xz"
             content-length: 188609132
             sha1: 13c153c27d34b8efc1beaed29dfb3bf2266a2638
             sha256: e0b1ada7a679d6c35f9d7a1192ed35fde054f3650bb0bd2570d103729ad3b846
         8.6.5:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.6.5-release/ghc-8.6.5-x86_64-fedora27-linux.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.6.5/ghc-8.6.5-x86_64-fedora27-linux.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.6.5-release/ghc-8.6.5-x86_64-fedora27-linux.tar.xz"
             content-length: 189351696
             sha1: 0b5b1b15dd36edf01eb29fadbb8566864f95838f
             sha256: cf78b53eaf336083e7a05f4a3000afbae4abe5bbc77ef80cc40e09d04ac5b4a1
         8.8.1:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.8.1-release/ghc-8.8.1-x86_64-fedora27-linux.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.8.1/ghc-8.8.1-x86_64-fedora27-linux.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.8.1-release/ghc-8.8.1-x86_64-fedora27-linux.tar.xz"
             content-length: 202227084
             sha1: 1150e35cd4f30cfa1729b97c4eff4bc4b96be9a8
             sha256: 851a78df620bc056c34b252c97040d5755e294993fa8afa5429708b5229204d6
         8.8.2:
-            # Mirrored from http://downloads.haskell.org/~ghc/8.8.2/ghc-8.8.2-x86_64-fedora27-linux.tar.xz
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.8.2-release/ghc-8.8.2-x86_64-fedora27-linux.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.8.2/ghc-8.8.2-x86_64-fedora27-linux.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.8.2-release/ghc-8.8.2-x86_64-fedora27-linux.tar.xz"
             content-length: 202542116
             sha1: 18f7ad61250a850b4b3fd555c31092c374d75a3a
             sha256: dbe2db717b33460f790e155e487d2a31c9b21a9d245f0c9490ad65844c3ea21f
         8.8.3:
-            # Mirrored from http://downloads.haskell.org/~ghc/8.8.3/ghc-8.8.3-x86_64-fedora27-linux.tar.xz
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.8.3-release/ghc-8.8.3-x86_64-fedora27-linux.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.8.3/ghc-8.8.3-x86_64-fedora27-linux.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.8.3-release/ghc-8.8.3-x86_64-fedora27-linux.tar.xz"
             content-length: 202566004
             sha1: 7318afe94b784f10720892a999275aac067f63fc
             sha256: 45ee1de3bfc98cbcc4886b65fc7651ade2d3820aa85eac2dbe9bc7bf91e7c818
         8.8.4:
-            # Mirrored from http://downloads.haskell.org/~ghc/8.8.4/ghc-8.8.4-x86_64-fedora27-linux.tar.xz
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.8.4-release/ghc-8.8.4-x86_64-fedora27-linux.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.8.4/ghc-8.8.4-x86_64-fedora27-linux.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.8.4-release/ghc-8.8.4-x86_64-fedora27-linux.tar.xz"
             content-length: 208262692
             sha1: 6220f1209f0fa0d103fb18668cbe3227ca4c1456
             sha256: f32e37f8aa03e74bad533ae02f62dc27a4521e78199576af490888ba34b515db
         8.10.1:
-            # Mirrored from http://downloads.haskell.org/~ghc/8.10.1/ghc-8.10.1-x86_64-fedora27-linux.tar.xz
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.10.1-release/ghc-8.10.1-x86_64-fedora27-linux.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.10.1/ghc-8.10.1-x86_64-fedora27-linux.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.10.1-release/ghc-8.10.1-x86_64-fedora27-linux.tar.xz"
             content-length: 214693280
             sha1: 3023b3456c50a045e6431de8dbba4e3840c7ab14
             sha256: 3c4cd72b4806045779739e8f5d1658e30e57123d88c2c8966422cdbcae448470
         8.10.2:
-            # Mirrored from http://downloads.haskell.org/~ghc/8.10.2/ghc-8.10.2-x86_64-fedora27-linux.tar.xz
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.10.2-release/ghc-8.10.2-x86_64-fedora27-linux.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.10.2/ghc-8.10.2-x86_64-fedora27-linux.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.10.2-release/ghc-8.10.2-x86_64-fedora27-linux.tar.xz"
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             sha256: 8c675da83e9b3c2f64ebb407b5f9ebb2c1f21aa5d701020614fdce644a542e3b
         8.10.3:
-            # Mirrored from http://downloads.haskell.org/~ghc/8.10.3/ghc-8.10.3-x86_64-fedora27-linux.tar.xz
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.10.3-release/ghc-8.10.3-x86_64-fedora27-linux.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.10.3/ghc-8.10.3-x86_64-fedora27-linux.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.10.3-release/ghc-8.10.3-x86_64-fedora27-linux.tar.xz"
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             sha256: f8739b12008712d6b6a9ffc6c39f9d05af77ef3bcb932c9aff20fa0893c8c159
@@ -872,52 +944,62 @@ ghc:
             sha1: 124b0f81079cecfa5813cbed0b37cd4bff89345d
             sha256: 282094d67a786e975d71022f1c9650d19f6f5eeb6a618a9c14dd9cccf1eff9f7
         8.4.1:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.4.1-release/ghc-8.4.1-x86_64-fedora27-linux.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.4.1/ghc-8.4.1-x86_64-fedora27-linux.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.4.1-release/ghc-8.4.1-x86_64-fedora27-linux.tar.xz"
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             sha256: 89328a013e64b9b56825a9071fea5616ddd623d37fd41e8fb913dfebc609e7ea
         8.4.2:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.4.2-release/ghc-8.4.2-x86_64-fedora27-linux.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.4.2/ghc-8.4.2-x86_64-fedora27-linux.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.4.2-release/ghc-8.4.2-x86_64-fedora27-linux.tar.xz"
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             sha256: d057b5c833596dbe4ae5d0dc2994f6cc5d0f4c2a21ea1d7900821d165fd4e846
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-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.4.3-release/ghc-8.4.3-x86_64-fedora27-linux.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.4.3/ghc-8.4.3-x86_64-fedora27-linux.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.4.3-release/ghc-8.4.3-x86_64-fedora27-linux.tar.xz"
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         8.4.4:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.4.4-release/ghc-8.4.4-x86_64-fedora27-linux.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.4.4/ghc-8.4.4-x86_64-fedora27-linux.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.4.4-release/ghc-8.4.4-x86_64-fedora27-linux.tar.xz"
             content-length: 152903812
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-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.6.1-release/ghc-8.6.1-x86_64-fedora27-linux.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.6.1/ghc-8.6.1-x86_64-fedora27-linux.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.6.1-release/ghc-8.6.1-x86_64-fedora27-linux.tar.xz"
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             sha256: da903fbcf11ee6c977a8b7dac3f04dbc098d674def587880b6624b8f32588beb
         8.6.2:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.6.2-release/ghc-8.6.2-x86_64-fedora27-linux.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.6.2/ghc-8.6.2-x86_64-fedora27-linux.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.6.2-release/ghc-8.6.2-x86_64-fedora27-linux.tar.xz"
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         8.6.3:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.6.3-release/ghc-8.6.3-x86_64-fedora27-linux.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.6.3/ghc-8.6.3-x86_64-fedora27-linux.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.6.3-release/ghc-8.6.3-x86_64-fedora27-linux.tar.xz"
             content-length: 182356948
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             sha256: 52ae92f4e8bb2ac0b7847287ea3da37081f5f7bf8bbb7c78ac35fde537d1a89f
         8.6.4:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.6.4-release/ghc-8.6.4-x86_64-fedora27-linux.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.6.4/ghc-8.6.4-x86_64-fedora27-linux.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.6.4-release/ghc-8.6.4-x86_64-fedora27-linux.tar.xz"
             content-length: 188609132
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             sha256: e0b1ada7a679d6c35f9d7a1192ed35fde054f3650bb0bd2570d103729ad3b846
         8.6.5:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.6.5-release/ghc-8.6.5-x86_64-fedora27-linux.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.6.5/ghc-8.6.5-x86_64-fedora27-linux.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.6.5-release/ghc-8.6.5-x86_64-fedora27-linux.tar.xz"
             content-length: 189351696
             sha1: 0b5b1b15dd36edf01eb29fadbb8566864f95838f
             sha256: cf78b53eaf336083e7a05f4a3000afbae4abe5bbc77ef80cc40e09d04ac5b4a1
         8.8.1:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.8.1-release/ghc-8.8.1-x86_64-fedora27-linux.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.8.1/ghc-8.8.1-x86_64-fedora27-linux.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.8.1-release/ghc-8.8.1-x86_64-fedora27-linux.tar.xz"
             content-length: 202227084
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             sha256: 851a78df620bc056c34b252c97040d5755e294993fa8afa5429708b5229204d6
@@ -1040,19 +1122,23 @@ ghc:
 
     macosx:
         7.8.4:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-7.8.4-release/ghc-7.8.4-x86_64-apple-darwin.tar.bz2"
+            url: "https://downloads.haskell.org/~ghc/7.8.4/ghc-7.8.4-x86_64-apple-darwin.tar.bz2"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-7.8.4-release/ghc-7.8.4-x86_64-apple-darwin.tar.bz2"
             content-length: 129602990
             sha1: b7aff3983e9005b74d90c5a4fd7c837f9e752923
         7.10.1:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-7.10.1-release/ghc-7.10.1-x86_64-apple-darwin.tar.bz2"
+            url: "https://downloads.haskell.org/~ghc/7.10.1/ghc-7.10.1-x86_64-apple-darwin.tar.bz2"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-7.10.1-release/ghc-7.10.1-x86_64-apple-darwin.tar.bz2"
             content-length: 146558980
             sha1: 5c7282f955020e92dc83560af9e7e3eadc2bd58f
         7.10.2:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-7.10.2-release/ghc-7.10.2-x86_64-apple-darwin.tar.bz2"
+            url: "https://downloads.haskell.org/~ghc/7.10.2/ghc-7.10.2-x86_64-apple-darwin.tar.bz2"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-7.10.2-release/ghc-7.10.2-x86_64-apple-darwin.tar.bz2"
             content-length: 146921830
             sha1: 0a043340952fad211f4c9780bde873e0d9e4d331
         7.10.3:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-7.10.3-release/ghc-7.10.3b-x86_64-apple-darwin.tar.bz2"
+            url: "https://downloads.haskell.org/~ghc/7.10.3/ghc-7.10.3b-x86_64-apple-darwin.tar.bz2"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-7.10.3-release/ghc-7.10.3b-x86_64-apple-darwin.tar.bz2"
             content-length: 147607506
             sha1: 0bbf715f041a20250d916847da19776837718d63
         8.0.1:
@@ -1210,75 +1296,91 @@ ghc:
 
     windows32:
         7.8.4:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-7.8.4-release/ghc-7.8.4-i386-unknown-mingw32-win10.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/7.8.4/ghc-7.8.4-i386-unknown-mingw32-win10.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-7.8.4-release/ghc-7.8.4-i386-unknown-mingw32-win10.tar.xz"
             content-length: 88645064
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         7.10.1:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-7.10.1-release/ghc-7.10.1-i386-unknown-mingw32-win10.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/7.10.1/ghc-7.10.1-i386-unknown-mingw32-win10.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-7.10.1-release/ghc-7.10.1-i386-unknown-mingw32-win10.tar.xz"
             content-length: 98776304
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         7.10.2:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-7.10.2-release/ghc-7.10.2-i386-unknown-mingw32-win10.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/7.10.2/ghc-7.10.2-i386-unknown-mingw32-win10.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-7.10.2-release/ghc-7.10.2-i386-unknown-mingw32-win10.tar.xz"
             content-length: 105154984
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-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-7.10.3-release/ghc-7.10.3-i386-unknown-mingw32-win10.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/7.10.3/ghc-7.10.3-i386-unknown-mingw32-win10.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-7.10.3-release/ghc-7.10.3-i386-unknown-mingw32-win10.tar.xz"
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-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.0.1-release/ghc-8.0.1-i386-unknown-mingw32-win10.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.0.1/ghc-8.0.1-i386-unknown-mingw32-win10.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.0.1-release/ghc-8.0.1-i386-unknown-mingw32-win10.tar.xz"
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-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.0.2-release/ghc-8.0.2-i386-unknown-mingw32-win10.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.0.2/ghc-8.0.2-i386-unknown-mingw32-win10.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.0.2-release/ghc-8.0.2-i386-unknown-mingw32-win10.tar.xz"
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-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.2.1-release/ghc-8.2.1-i386-unknown-mingw32.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.2.1/ghc-8.2.1-i386-unknown-mingw32.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.2.1-release/ghc-8.2.1-i386-unknown-mingw32.tar.xz"
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-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.2.2-release/ghc-8.2.2-i386-unknown-mingw32.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.2.2/ghc-8.2.2-i386-unknown-mingw32.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.2.2-release/ghc-8.2.2-i386-unknown-mingw32.tar.xz"
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-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.4.1-release/ghc-8.4.1-i386-unknown-mingw32.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.4.1/ghc-8.4.1-i386-unknown-mingw32.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.4.1-release/ghc-8.4.1-i386-unknown-mingw32.tar.xz"
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-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.4.2-release/ghc-8.4.2-i386-unknown-mingw32.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.4.2/ghc-8.4.2-i386-unknown-mingw32.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.4.2-release/ghc-8.4.2-i386-unknown-mingw32.tar.xz"
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-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.4.3-release/ghc-8.4.3-i386-unknown-mingw32.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.4.3/ghc-8.4.3-i386-unknown-mingw32.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.4.3-release/ghc-8.4.3-i386-unknown-mingw32.tar.xz"
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-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.4.4-release/ghc-8.4.4-i386-unknown-mingw32.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.4.4/ghc-8.4.4-i386-unknown-mingw32.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.4.4-release/ghc-8.4.4-i386-unknown-mingw32.tar.xz"
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-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.6.1-release/ghc-8.6.1-i386-unknown-mingw32.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.6.1/ghc-8.6.1-i386-unknown-mingw32.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.6.1-release/ghc-8.6.1-i386-unknown-mingw32.tar.xz"
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-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.6.2-release/ghc-8.6.2-i386-unknown-mingw32.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.6.2/ghc-8.6.2-i386-unknown-mingw32.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.6.2-release/ghc-8.6.2-i386-unknown-mingw32.tar.xz"
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-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.6.3-release/ghc-8.6.3-i386-unknown-mingw32.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.6.3/ghc-8.6.3-i386-unknown-mingw32.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.6.3-release/ghc-8.6.3-i386-unknown-mingw32.tar.xz"
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-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.6.5-release/ghc-8.6.5-i386-unknown-mingw32.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.6.5/ghc-8.6.5-i386-unknown-mingw32.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.6.5-release/ghc-8.6.5-i386-unknown-mingw32.tar.xz"
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             sha256: 2a8fb73080ed4335f7a172fe6cf9da1a2faa51fdb72817c50088292f497fc57a
@@ -1293,140 +1395,162 @@ ghc:
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         7.10.2:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-7.10.2-release/ghc-7.10.2-x86_64-unknown-mingw32-win10.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/7.10.2/ghc-7.10.2-x86_64-unknown-mingw32-win10.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-7.10.2-release/ghc-7.10.2-x86_64-unknown-mingw32-win10.tar.xz"
             content-length: 136724720
             sha1: fa3c147f48fae47d6bc6d8188b65b9179e469b87
         7.10.3:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-7.10.3-release/ghc-7.10.3-x86_64-unknown-mingw32-win10.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/7.10.3/ghc-7.10.3-x86_64-unknown-mingw32-win10.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-7.10.3-release/ghc-7.10.3-x86_64-unknown-mingw32-win10.tar.xz"
             content-length: 136246768
             sha1: e471784db3c693d875b30c0189eb454a01117dcc
         8.0.1:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.0.1-release/ghc-8.0.1-x86_64-unknown-mingw32-win10.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.0.1/ghc-8.0.1-x86_64-unknown-mingw32-win10.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.0.1-release/ghc-8.0.1-x86_64-unknown-mingw32-win10.tar.xz"
             content-length: 158624976
             sha1: 222409b58e3911e8f40b4a9fdcf607bfd96cecd5
         8.0.2:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.0.2-release/ghc-8.0.2-x86_64-unknown-mingw32-win10.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.0.2/ghc-8.0.2-x86_64-unknown-mingw32-win10.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.0.2-release/ghc-8.0.2-x86_64-unknown-mingw32-win10.tar.xz"
             content-length: 152282428
             sha1: 4a6779a2d2bb376dfb4a63dbb3f906c0b54d23e3
         8.2.1:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.2.1-release/ghc-8.2.1-x86_64-unknown-mingw32.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.2.1/ghc-8.2.1-x86_64-unknown-mingw32.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.2.1-release/ghc-8.2.1-x86_64-unknown-mingw32.tar.xz"
             content-length: 175053796
             sha1: 51df67de9cb5cad1420626c12c063b2896dceb65
         8.2.2:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.2.2-release/ghc-8.2.2-x86_64-unknown-mingw32.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.2.2/ghc-8.2.2-x86_64-unknown-mingw32.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.2.2-release/ghc-8.2.2-x86_64-unknown-mingw32.tar.xz"
             content-length: 175118948
             sha1: 5e081f3c1db001d8792cb73403f50ba80e8d237e
             sha256: 1e033df2092aa546e763e7be63167720b32df64f76673ea1ce7ae7c9f564b223
         8.4.1:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.4.1-release/ghc-8.4.1-x86_64-unknown-mingw32.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.4.1/ghc-8.4.1-x86_64-unknown-mingw32.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.4.1-release/ghc-8.4.1-x86_64-unknown-mingw32.tar.xz"
             content-length: 191687004
             sha1: 227729550d4b9d15d7fa94ff5159994390786ca4
             sha256: 328b013fc651d34e075019107e58bb6c8a578f0155cf3ad4557e6f2661b03131
         8.4.2:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.4.2-release/ghc-8.4.2-x86_64-unknown-mingw32.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.4.2/ghc-8.4.2-x86_64-unknown-mingw32.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.4.2-release/ghc-8.4.2-x86_64-unknown-mingw32.tar.xz"
             content-length: 192170476
             sha1: 1c36f68a2e27340c1f6b13b795da752ea9afae51
             sha256: 797634aa9812fc6b2084a24ddb4fde44fa83a2f59daea82e0af81ca3dd323fde
         8.4.3:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.4.3-release/ghc-8.4.3-x86_64-unknown-mingw32.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.4.3/ghc-8.4.3-x86_64-unknown-mingw32.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.4.3-release/ghc-8.4.3-x86_64-unknown-mingw32.tar.xz"
             content-length: 192361576
             sha1: 55195bcdb6742ea8bc2fb2e6f1115a2eea49e5f7
             sha256: 8a83cfbf9ae84de0443c39c93b931693bdf2a6d4bf163ffb41855f80f4bf883e
         8.4.4:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.4.4-release/ghc-8.4.4-x86_64-unknown-mingw32.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.4.4/ghc-8.4.4-x86_64-unknown-mingw32.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.4.4-release/ghc-8.4.4-x86_64-unknown-mingw32.tar.xz"
             content-length: 191925112
             sha1: 697db44cdf7fdf1a6d83ada61e36857f2e241e3d
             sha256: da29dbb0f1199611c7d5bb7b0dd6a7426ca98f67dfd6da1526b033cd3830dc05
         8.6.1:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.6.1-release/ghc-8.6.1-x86_64-unknown-mingw32.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.6.1/ghc-8.6.1-x86_64-unknown-mingw32.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.6.1-release/ghc-8.6.1-x86_64-unknown-mingw32.tar.xz"
             content-length: 213498368
             sha1: a82c1955f841be3b3c1bc5dd57bd2740d0136a84
             sha256: 7316d9cb5e486460476754f872c7bac30ee2082e42f46da4342f872d10b88099
         8.6.2:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.6.2-release/ghc-8.6.2-x86_64-unknown-mingw32.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.6.2/ghc-8.6.2-x86_64-unknown-mingw32.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.6.2-release/ghc-8.6.2-x86_64-unknown-mingw32.tar.xz"
             content-length: 213699632
             sha1: 9738c346030e4f59a0fcd140de6b7c613135a34f
             sha256: 9a398e133cab09ff2610834337355d4e26c35e0665403fb9ff8db79315f74d3d
         8.6.3:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.6.3-release/ghc-8.6.3-x86_64-unknown-mingw32.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.6.3/ghc-8.6.3-x86_64-unknown-mingw32.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.6.3-release/ghc-8.6.3-x86_64-unknown-mingw32.tar.xz"
             content-length: 213391796
             sha1: 5a352e50ccf1deecc335300c5d8984ce863059b4
             sha256: 2fec383904e5fa79413e9afd328faf9bc700006c8c3d4bcdd8d4f2ccf0f7fa2a
         8.6.4:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.6.4-release/ghc-8.6.4-x86_64-unknown-mingw32.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.6.4/ghc-8.6.4-x86_64-unknown-mingw32.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.6.4-release/ghc-8.6.4-x86_64-unknown-mingw32.tar.xz"
             content-length: 178790960
             sha1: 7d7e8448ad9b5b412223ad78c4fbde5af31c0fc4
             sha256: e8d021b7a90772fc559862079da20538498d991956d7557b468ca19ddda22a08
         8.6.5:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.6.5-release/ghc-8.6.5-x86_64-unknown-mingw32.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.6.5/ghc-8.6.5-x86_64-unknown-mingw32.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.6.5-release/ghc-8.6.5-x86_64-unknown-mingw32.tar.xz"
             content-length: 280280296
             sha1: 3eb5017d1dfd75cd93668d5f046587483f7e0c02
             sha256: 457024c6ea43bdce340af428d86319931f267089398b859b00efdfe2fd4ce93f
         8.8.1:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.8.1-release/ghc-8.8.1-x86_64-unknown-mingw32.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.8.1/ghc-8.8.1-x86_64-unknown-mingw32.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.8.1-release/ghc-8.8.1-x86_64-unknown-mingw32.tar.xz"
             content-length: 395638616
             sha1: 1d225402594014b9dc59d8dee5802cc531f54f99
             sha256: 29e56e6af38017a5a76b2b6995a39d3988fa58131e4b55b62dd317ba7186ac9b
         8.8.2:
-            # Mirrored from http://downloads.haskell.org/~ghc/8.8.2/ghc-8.8.2-x86_64-unknown-mingw32.tar.xz
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.8.2-release/ghc-8.8.2-x86_64-unknown-mingw32.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.8.2/ghc-8.8.2-x86_64-unknown-mingw32.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.8.2-release/ghc-8.8.2-x86_64-unknown-mingw32.tar.xz"
             content-length: 395954376
             sha1: 1ff82017057346546862736f7b3b0931516492a7
             sha256: e25d9b16ee62cafc7387af2cd021eea676a99cd2c32b83533b016162c63065d9
         8.8.3:
-            # Mirrored from http://downloads.haskell.org/~ghc/8.8.3/ghc-8.8.3-x86_64-unknown-mingw32.tar.xz
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.8.3-release/ghc-8.8.3-x86_64-unknown-mingw32.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.8.3/ghc-8.8.3-x86_64-unknown-mingw32.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.8.3-release/ghc-8.8.3-x86_64-unknown-mingw32.tar.xz"
             content-length: 204702116
             sha1: 1f00c0c348acc67592e8a23b0d0a76245df0a930
             sha256: e22586762af0911c06e8140f1792e3ca381a3a482a20d67b9054883038b3a422
         8.8.4:
-            # Mirrored from http://downloads.haskell.org/~ghc/8.8.4/ghc-8.8.4-x86_64-unknown-mingw32.tar.xz
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.8.4-release/ghc-8.8.4-x86_64-unknown-mingw32.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.8.4/ghc-8.8.4-x86_64-unknown-mingw32.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.8.4-release/ghc-8.8.4-x86_64-unknown-mingw32.tar.xz"
             content-length: 204705252
             sha1: 08bed264a83cefaa8b6a271a8434998d3a7fe422
             sha256: d185055d2c8dc3bfe5b88afd59d6877eb1e722b672d1c9649f18296e148ed71f
         8.10.1:
-            # Mirrored from http://downloads.haskell.org/~ghc/8.10.1/ghc-8.10.1-x86_64-unknown-mingw32.tar.xz
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.10.1-release/ghc-8.10.1-x86_64-unknown-mingw32.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.10.1/ghc-8.10.1-x86_64-unknown-mingw32.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.10.1-release/ghc-8.10.1-x86_64-unknown-mingw32.tar.xz"
             content-length: 427479476
             sha1: 19867b0e4edb18aba8c62f5d44c1d7a67ee6220a
             sha256: 38a3166ea50cccd5bae7e1680eae3aae2b4ae31b61f82a1d8168fb821f43bd67
         8.10.2:
-            # Mirrored from http://downloads.haskell.org/~ghc/8.10.2/ghc-8.10.2-x86_64-unknown-mingw32.tar.xz
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.10.2-release/ghc-8.10.2-x86_64-unknown-mingw32.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.10.2/ghc-8.10.2-x86_64-unknown-mingw32.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.10.2-release/ghc-8.10.2-x86_64-unknown-mingw32.tar.xz"
             content-length: 428286988
             sha1: d4a06724701af9fbf8b0b4faaac239c9fd2798f9
             sha256: dcae4c173b9896e07ff048de5509aa0a4537233150e06e5ce8848303dfadc176
         8.10.3:
-            # Mirrored from http://downloads.haskell.org/~ghc/8.10.3/ghc-8.10.3-x86_64-unknown-mingw32.tar.xz
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.10.3-release/ghc-8.10.3-x86_64-unknown-mingw32.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.10.3/ghc-8.10.3-x86_64-unknown-mingw32.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.10.3-release/ghc-8.10.3-x86_64-unknown-mingw32.tar.xz"
             content-length: 431235000
             sha1: 7917ae4ac9ce4fa1d61c526359e61c0605a4daa0
             sha256: 927a6c699533a115cd49772ef2c753d9af2c13bf9f0b2d3bd13645cc6a144ee3
 
     freebsd32:
         7.8.4:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-7.8.4-release/ghc-7.8.4-i386-portbld-freebsd.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/7.8.4/ghc-7.8.4-i386-portbld-freebsd.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-7.8.4-release/ghc-7.8.4-i386-portbld-freebsd.tar.xz"
             content-length: 68504948
             sha1: fa6164a1408b94c719957b23f043da8539376351
         7.10.1:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-7.10.1-release/ghc-7.10.1-i386-portbld-freebsd.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/7.10.1/ghc-7.10.1-i386-portbld-freebsd.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-7.10.1-release/ghc-7.10.1-i386-portbld-freebsd.tar.xz"
             content-length: 75523240
             sha1: 5dd18c6a5c2da422dc1784720c7948f4e25b7f70
         7.10.2:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-7.10.2-release/ghc-7.10.2-i386-portbld-freebsd.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/7.10.2/ghc-7.10.2-i386-portbld-freebsd.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-7.10.2-release/ghc-7.10.2-i386-portbld-freebsd.tar.xz"
             content-length: 87968692
             sha1: 6925a297932d1922f8e6c9f4ad0f0ccbdd3ea5b9
         7.10.3:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-7.10.3-release/ghc-7.10.3-i386-portbld-freebsd.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/7.10.3/ghc-7.10.3-i386-portbld-freebsd.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-7.10.3-release/ghc-7.10.3-i386-portbld-freebsd.tar.xz"
             content-length: 75898016
             sha1: 6d8e1ae331d07148cf631195bc8c2d03ecaf5e04
         8.0.1:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.0.1-release/ghc-8.0.1-i386-portbld-freebsd.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.0.1/ghc-8.0.1-i386-portbld-freebsd.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.0.1-release/ghc-8.0.1-i386-portbld-freebsd.tar.xz"
             content-length: 112655220
             sha1: 8dbb7b1ec79f39a3e051b7a804f413bbe344695d
         8.0.2:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.0.2-release/ghc-8.0.2-i386-portbld-freebsd.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.0.2/ghc-8.0.2-i386-portbld-freebsd.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.0.2-release/ghc-8.0.2-i386-portbld-freebsd.tar.xz"
             content-length: 111754984
             sha1: 74a7e7b7407b68ef74eddb03f492a8fda813e4bb
         8.4.3:
@@ -1548,45 +1672,55 @@ ghc:
 
     freebsd64:
         7.8.4:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-7.8.4-release/ghc-7.8.4-x86_64-portbld-freebsd.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/7.8.4/ghc-7.8.4-x86_64-portbld-freebsd.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-7.8.4-release/ghc-7.8.4-x86_64-portbld-freebsd.tar.xz"
             content-length: 68223736
             sha1: 3507549290a8226febb1284a50c51a5f10261d94
         7.10.1:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-7.10.1-release/ghc-7.10.1-x86_64-portbld-freebsd.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/7.10.1/ghc-7.10.1-x86_64-portbld-freebsd.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-7.10.1-release/ghc-7.10.1-x86_64-portbld-freebsd.tar.xz"
             content-length: 76047456
             sha1: e1d9d07bb8806f1b7d6ba110471aa24442e881dc
         7.10.2:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-7.10.2-release/ghc-7.10.2-x86_64-portbld-freebsd.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/7.10.2/ghc-7.10.2-x86_64-portbld-freebsd.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-7.10.2-release/ghc-7.10.2-x86_64-portbld-freebsd.tar.xz"
             content-length: 88841932
             sha1: 43372109b84f55cf9138982f84f39cd178d95975
         7.10.3:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-7.10.3-release/ghc-7.10.3-x86_64-portbld-freebsd.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/7.10.3/ghc-7.10.3-x86_64-portbld-freebsd.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-7.10.3-release/ghc-7.10.3-x86_64-portbld-freebsd.tar.xz"
             content-length: 76298356
             sha1: 459e438f1a397f4a93f7e873ea74b396dedc77aa
         8.0.1:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.0.1-release/ghc-8.0.1-x86_64-portbld-freebsd.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.0.1/ghc-8.0.1-x86_64-portbld-freebsd.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.0.1-release/ghc-8.0.1-x86_64-portbld-freebsd.tar.xz"
             content-length: 112094652
             sha1: 9ce6836d5e6f06fa0f3099cee39a9ab4bdb291d4
         8.0.2:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.0.2-release/ghc-8.0.2-x86_64-portbld-freebsd.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.0.2/ghc-8.0.2-x86_64-portbld-freebsd.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.0.2-release/ghc-8.0.2-x86_64-portbld-freebsd.tar.xz"
             content-length: 111330896
             sha1: 057a8af762d0259204cb0b6d758fc6b31f536d46
         8.2.1:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.2.1-release/ghc-8.2.1-x86_64-portbld10_3-freebsd.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.2.1/ghc-8.2.1-x86_64-portbld10_3-freebsd.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.2.1-release/ghc-8.2.1-x86_64-portbld10_3-freebsd.tar.xz"
             content-length: 115765760
             sha1: d413c0b193e7417fcf42058e0105e31310221c8e
         8.2.2:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.2.2-release/ghc-8.2.2-x86_64-portbld10_3-freebsd.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.2.2/ghc-8.2.2-x86_64-portbld10_3-freebsd.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.2.2-release/ghc-8.2.2-x86_64-portbld10_3-freebsd.tar.xz"
             content-length: 113792360
             sha1: 913528b902a2ceb8060d08760b31e7bde15157d0
             sha256: 9e99aaeaec4b2c6d660d80246c0d4dbd41fda88f1eb7a908b29dc8fa8d663949
         8.4.1:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.4.1-release/ghc-8.4.1-x86_64-portbld11-freebsd.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.4.1/ghc-8.4.1-x86_64-portbld11-freebsd.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.4.1-release/ghc-8.4.1-x86_64-portbld11-freebsd.tar.xz"
             content-length: 145379480
             sha1: 17d4b0d730e1289a9d4ee2c4b30bbd5ac45a34bc
             sha256: e748daec098445c6190090fe32bb2817a1140553be5acd2188e1af05ad24e5aa
         8.4.2:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.4.2-release/ghc-8.4.2-x86_64-portbld-freebsd.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.4.2/ghc-8.4.2-x86_64-portbld-freebsd.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.4.2-release/ghc-8.4.2-x86_64-portbld-freebsd.tar.xz"
             content-length: 145946192
             sha1: 97c21764580814a93dc171f076d657c91e52adec
             sha256: e9ed417fdf94c2ff2c6e344ed16f332bf6b591511f6442c0d9ea94854882b66c
@@ -1603,7 +1737,8 @@ ghc:
             sha1: cbd498d281575e33f13dd3967da498516688387b
             sha256: b51c437635da47898957dc625631c4f5d5b89abe05e621655179d7d466b2a892
         8.6.1:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.6.1-release/ghc-8.6.1-x86_64-portbld-freebsd.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.6.1/ghc-8.6.1-x86_64-portbld-freebsd.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.6.1-release/ghc-8.6.1-x86_64-portbld-freebsd.tar.xz"
             content-length: 158235144
             sha1: 76610344f6ea536526fb4ba2f3be18d5d74a4242
             sha256: 51403b054a3a649039ac988e1d1112561f96750bfced63df864091a3fab36f08
@@ -1614,7 +1749,8 @@ ghc:
             sha1: c5770d3c2e99e984b286e867d7cda4b855d78dfc
             sha256: a4b44ed1c03e167d92c3fa0f0c08aea1d67f353701ed2c65f4d1fb60e0563e89
         8.6.3:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.6.3-release/ghc-8.6.3-x86_64-portbld-freebsd.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.6.3/ghc-8.6.3-x86_64-portbld-freebsd.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.6.3-release/ghc-8.6.3-x86_64-portbld-freebsd.tar.xz"
             content-length: 158207536
             sha1: c7a344736d396107b34c8a511b8aa09f11ddb6b4
             sha256: bc2419fa180f8a7808c49775987866435995df9bdd9ce08bcd38352d63ba6031
@@ -1719,42 +1855,50 @@ ghc:
 
     freebsd64-11:
         8.2.1:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.2.1-release/ghc-8.2.1-x86_64-portbld11-freebsd.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.2.1/ghc-8.2.1-x86_64-portbld11-freebsd.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.2.1-release/ghc-8.2.1-x86_64-portbld11-freebsd.tar.xz"
             content-length: 124245556
             sha1: 2c928c5c367df1397eeba416566587858f8f7d74
         8.2.2:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.2.2-release/ghc-8.2.2-x86_64-portbld11-freebsd.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.2.2/ghc-8.2.2-x86_64-portbld11-freebsd.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.2.2-release/ghc-8.2.2-x86_64-portbld11-freebsd.tar.xz"
             content-length: 126845368
             sha1: 58d9d9b8beee0cd5e3135231e906a75f92d71d0f
             sha256: cd351c704b92b9af23994024df07de8ca7090ea7675d5c8b14b2be857a46d804
         8.4.1:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.4.1-release/ghc-8.4.1-x86_64-portbld11-freebsd.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.4.1/ghc-8.4.1-x86_64-portbld11-freebsd.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.4.1-release/ghc-8.4.1-x86_64-portbld11-freebsd.tar.xz"
             content-length: 145379480
             sha1: 17d4b0d730e1289a9d4ee2c4b30bbd5ac45a34bc
             sha256: e748daec098445c6190090fe32bb2817a1140553be5acd2188e1af05ad24e5aa
         8.4.2:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.4.2-release/ghc-8.4.2-x86_64-portbld-freebsd.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.4.2/ghc-8.4.2-x86_64-portbld-freebsd.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.4.2-release/ghc-8.4.2-x86_64-portbld-freebsd.tar.xz"
             content-length: 145946192
             sha1: 97c21764580814a93dc171f076d657c91e52adec
             sha256: e9ed417fdf94c2ff2c6e344ed16f332bf6b591511f6442c0d9ea94854882b66c
         8.4.4:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.4.4-release/ghc-8.4.4-x86_64-portbld-freebsd11.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.4.4/ghc-8.4.4-x86_64-portbld-freebsd11.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.4.4-release/ghc-8.4.4-x86_64-portbld-freebsd11.tar.xz"
             content-length: 154115020
             sha1: 8190d79c91911bb0b5fdbb95ca7702b7195d1aac
             sha256: 44fbd142d1c355d6110595c59c760e2c73866ff9259ec85ebf814edb244d1940
         8.6.1:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.6.1-release/ghc-8.6.1-x86_64-portbld-freebsd.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.6.1/ghc-8.6.1-x86_64-portbld-freebsd.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.6.1-release/ghc-8.6.1-x86_64-portbld-freebsd.tar.xz"
             content-length: 158235144
             sha1: 76610344f6ea536526fb4ba2f3be18d5d74a4242
             sha256: 51403b054a3a649039ac988e1d1112561f96750bfced63df864091a3fab36f08
         8.6.3:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.6.3-release/ghc-8.6.3-x86_64-portbld-freebsd.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.6.3/ghc-8.6.3-x86_64-portbld-freebsd.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.6.3-release/ghc-8.6.3-x86_64-portbld-freebsd.tar.xz"
             content-length: 158207536
             sha1: c7a344736d396107b34c8a511b8aa09f11ddb6b4
             sha256: bc2419fa180f8a7808c49775987866435995df9bdd9ce08bcd38352d63ba6031
         8.10.2:
             # Mirrored from http://downloads.haskell.org/~ghc/8.10.2/ghc-8.10.2-x86_64-unknown-freebsd.tar.xz
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.10.2-release/ghc-8.10.2-x86_64-unknown-freebsd.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.10.2/ghc-8.10.2-x86_64-unknown-freebsd.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.10.2-release/ghc-8.10.2-x86_64-unknown-freebsd.tar.xz"
             content-length: 179791636
             sha1: 5c54c56444f480601e1bf188a9dfc280d07885c8
             sha256: 9e5957f3497f4b58ecd3699568d9caaa11a47a6d7e902032c261e450fa0f6686
@@ -1767,23 +1911,27 @@ ghc:
     # https://docs.haskellstack.org/en/stable/yaml_configuration/#ghc-build
     openbsd64-maj5-min9:
         8.0.1:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.0.1-release/ghc-8.0.1-x86_64-unknown-openbsd5.9.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.0.1/ghc-8.0.1-x86_64-unknown-openbsd5.9.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.0.1-release/ghc-8.0.1-x86_64-unknown-openbsd5.9.tar.xz"
             content-length: 100619184
             sha1: 7ed707de43456ddc4534f68a17ef58b7099e9a59
         8.0.2:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.0.2-release/ghc-8.0.2-x86_64-unknown-openbsd.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.0.2/ghc-8.0.2-x86_64-unknown-openbsd.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.0.2-release/ghc-8.0.2-x86_64-unknown-openbsd.tar.xz"
             content-length: 100054832
             sha1: 426b01e6ac72b5e039eb9626649506bc47eb9510
 
     openbsd64-maj6-min0:
         8.2.1:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.2.1-release/ghc-8.2.1-x86_64-openbsd60-openbsd.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.2.1/ghc-8.2.1-x86_64-openbsd60-openbsd.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.2.1-release/ghc-8.2.1-x86_64-openbsd60-openbsd.tar.xz"
             content-length: 115142184
             sha1: b9bac0f843687facc11cefe3a59d465c780e2e67
 
     openbsd64-maj6-min1:
         8.2.1:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.2.1-release/ghc-8.2.1-x86_64-openbsd61-openbsd.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.2.1/ghc-8.2.1-x86_64-openbsd61-openbsd.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.2.1-release/ghc-8.2.1-x86_64-openbsd61-openbsd.tar.xz"
             content-length: 115110128
             sha1: 5ac8a867cf1241eeebdef7a6eee74f0a55e4543e
 
@@ -1797,42 +1945,51 @@ ghc:
             content-length: 135191335
             sha1: 35f8b595434fcbfa2cb6fc0e9561a5a4d87382a5
         8.0.1:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.0.1-release/ghc-8.0.1-x86_64-unknown-openbsd5.9.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.0.1/ghc-8.0.1-x86_64-unknown-openbsd5.9.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.0.1-release/ghc-8.0.1-x86_64-unknown-openbsd5.9.tar.xz"
             content-length: 100619184
             sha1: 7ed707de43456ddc4534f68a17ef58b7099e9a59
         8.0.2:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.0.2-release/ghc-8.0.2-x86_64-unknown-openbsd.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.0.2/ghc-8.0.2-x86_64-unknown-openbsd.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.0.2-release/ghc-8.0.2-x86_64-unknown-openbsd.tar.xz"
             content-length: 100054832
             sha1: 426b01e6ac72b5e039eb9626649506bc47eb9510
         8.2.1:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.2.1-release/ghc-8.2.1-x86_64-openbsd60-openbsd.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.2.1/ghc-8.2.1-x86_64-openbsd60-openbsd.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.2.1-release/ghc-8.2.1-x86_64-openbsd60-openbsd.tar.xz"
             content-length: 115142184
             sha1: b9bac0f843687facc11cefe3a59d465c780e2e67
 
     # ARMv7 support is experimental
     linux-armv7:
         7.10.2:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-7.10.2-release/ghc-7.10.2-arm-unknown-linux.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/7.10.2/ghc-7.10.2-arm-unknown-linux.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-7.10.2-release/ghc-7.10.2-arm-unknown-linux.tar.xz"
             content-length: 113388524
             sha1: 5e889d063c382e867e15e2443775167a8e9e348b
         7.10.3:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-7.10.3-release/ghc-7.10.3-armv7-deb8-linux.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/7.10.3/ghc-7.10.3-armv7-deb8-linux.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-7.10.3-release/ghc-7.10.3-armv7-deb8-linux.tar.xz"
             content-length: 118129964
             sha1: fa672f2b1953485a7b3f99b7751f28db18bef43a
         8.0.1:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.0.1-release/ghc-8.0.1-armv7-deb8-linux.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.0.1/ghc-8.0.1-armv7-deb8-linux.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.0.1-release/ghc-8.0.1-armv7-deb8-linux.tar.xz"
             content-length: 144300284
             sha1: 62a645db8b0ad2b458189502c182a9e847d90710
         8.0.2:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.0.2-release/ghc-8.0.2-armv7-deb8-linux.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.0.2/ghc-8.0.2-armv7-deb8-linux.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.0.2-release/ghc-8.0.2-armv7-deb8-linux.tar.xz"
             content-length: 143338004
             sha1: 65b6a2c8ffed5fde60ebffaf2ad2bc97c680dd61
         8.2.1:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.2.1-release/ghc-8.2.1-armv7-deb8-linux.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.2.1/ghc-8.2.1-armv7-deb8-linux.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.2.1-release/ghc-8.2.1-armv7-deb8-linux.tar.xz"
             content-length: 173741784
             sha1: 58a274d9fb9899123f680ec0857fda58a6b430ff
         8.2.2:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.2.2-release/ghc-8.2.2-armv7-deb8-linux.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.2.2/ghc-8.2.2-armv7-deb8-linux.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.2.2-release/ghc-8.2.2-armv7-deb8-linux.tar.xz"
             content-length: 156227876
             sha1: 7d734275c6486f440f31c4026f220c2d7f64a753
         8.6.3:
@@ -1841,85 +1998,100 @@ ghc:
             sha1: 7c7092d754105bb818925f4cb98c1e57ca312829
         8.10.1:
             # Mirrored from http://downloads.haskell.org/~ghc/8.10.1/ghc-8.10.1-armv7-deb9-linux.tar.xz
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.10.1-release/ghc-8.10.1-armv7-deb9-linux.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.10.1/ghc-8.10.1-armv7-deb9-linux.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.10.1-release/ghc-8.10.1-armv7-deb9-linux.tar.xz"
             content-length: 342015984
             sha1: 8a84cb1f08cbf29e4d7c3958754cd1d855be9999
             sha256: afe1bde2b0d6deb0320b9460fffe5d9427e302df85aec866b9c1458777d52b28
         8.10.2:
             # Mirrored from http://downloads.haskell.org/~ghc/8.10.2/ghc-8.10.2-armv7-deb10-linux.tar.xz
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.10.2-release/ghc-8.10.2-armv7-deb10-linux.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.10.2/ghc-8.10.2-armv7-deb10-linux.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.10.2-release/ghc-8.10.2-armv7-deb10-linux.tar.xz"
             content-length: 341245768
             sha1: 66f286cc897c31473d05d9ea8a92b1b842d4c74a
             sha256: bb9c97826b1f4d7a8ef8bce0616b612f1ded10480ef10fcf7fb4e6d10a6681c8
         8.10.3:
             # Mirrored from http://downloads.haskell.org/~ghc/8.10.3/ghc-8.10.3-armv7-deb10-linux.tar.xz
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.10.3-release/ghc-8.10.3-armv7-deb10-linux.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.10.3/ghc-8.10.3-armv7-deb10-linux.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.10.3-release/ghc-8.10.3-armv7-deb10-linux.tar.xz"
             content-length: 342497964
             sha1: 59f8e8e1847b82664bdb95343a940ed771e5dcac
             sha256: b823b58cae36fbac0741680ca7605180fa4cf4c6ae439123d282184b94d32fd6
 
     linux-aarch64:
         8.2.1:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.2.1-release/ghc-8.2.1-aarch64-deb8-linux.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.2.1/ghc-8.2.1-aarch64-deb8-linux.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.2.1-release/ghc-8.2.1-aarch64-deb8-linux.tar.xz"
             content-length: 163469920
             sha1: 7cd428c5bc376d3d33ece59da55404a570f13cff
         8.2.2:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.2.2-release/ghc-8.2.2-aarch64-deb8-linux.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.2.2/ghc-8.2.2-aarch64-deb8-linux.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.2.2-release/ghc-8.2.2-aarch64-deb8-linux.tar.xz"
             content-length: 163937116
             sha1: 36b29a3f02d76b7c6d8ced92d7f831e502e3cc01
         8.4.1:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.4.1-release/ghc-8.4.1-aarch64-deb8-linux.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.4.1/ghc-8.4.1-aarch64-deb8-linux.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.4.1-release/ghc-8.4.1-aarch64-deb8-linux.tar.xz"
             content-length: 200351604
             sha1: 5e39c72c9440564d552c425cc72701c543597e10
             sha256: 04c313c0574a6f61720d2a0b7839b8b307eb638f009673be51abf669d6357fcd
         8.4.2:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.4.2-release/ghc-8.4.2-aarch64-deb8-linux.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.4.2/ghc-8.4.2-aarch64-deb8-linux.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.4.2-release/ghc-8.4.2-aarch64-deb8-linux.tar.xz"
             content-length: 200629892
             sha1: 64c063a98a37c133b4be3de7ab995c05bdff612f
             sha256: 684f8d2f5ddb954719e5c0cc149333e3c0396de9592cbad2b7b78c1547dffadc
         8.6.2:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.6.2-release/ghc-8.6.2-aarch64-deb8-linux.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.6.2/ghc-8.6.2-aarch64-deb8-linux.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.6.2-release/ghc-8.6.2-aarch64-deb8-linux.tar.xz"
             content-length: 207834124
             sha1: cedb6aa1283911cf720dc8d1df432b3436e72389
             sha256: 841d4cf0673a4db44d93082f56479ffd679bd369c67d715e7b288630ec7eb4f0
         8.6.5:
             # Mirrored from http://downloads.haskell.org/~ghc/8.6.5/ghc-8.6.5-aarch64-ubuntu18.04-linux.tar.xz
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.6.5-release/ghc-8.6.5-aarch64-ubuntu18.04-linux.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.6.5/ghc-8.6.5-aarch64-ubuntu18.04-linux.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.6.5-release/ghc-8.6.5-aarch64-ubuntu18.04-linux.tar.xz"
             content-length: 190614704
             sha1: 74c5682cce4a59ca4e3782f1df65e46d19b83388
             sha256: 1852589037e4b2805ab517bc430e25a3125c4a118a1674ffefbb443394a0c786
         8.8.1:
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.8.1-release/ghc-8.8.1-aarch64-deb9-linux.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.8.1/ghc-8.8.1-aarch64-deb9-linux.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.8.1-release/ghc-8.8.1-aarch64-deb9-linux.tar.xz"
             content-length: 300455372
             sha1: 912e03f10aae333dd5edbf555634196c4baf74a8
             sha256: d4201c618f9ce1be6b531b35235de1575fa64cf1a1cf19e3244abb6eb35d2b9a
         8.8.2:
             # Mirrored from http://downloads.haskell.org/~ghc/8.8.2/ghc-8.8.2-aarch64-deb9-linux.tar.xz
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.8.2-release/ghc-8.8.2-aarch64-deb9-linux.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.8.2/ghc-8.8.2-aarch64-deb9-linux.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.8.2-release/ghc-8.8.2-aarch64-deb9-linux.tar.xz"
             content-length: 300890924
             sha1: ffb1d0d8c2f67ad7bf5b66daa92eb3fe82f03648
             sha256: b4b66b8d38a8b6d9ab4ce9c27a34d016c55729e7cba4385d4e4c755b937457f4
         8.8.3:
             # Mirrored from http://downloads.haskell.org/~ghc/8.8.3/ghc-8.8.3-aarch64-deb9-linux.tar.xz
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.8.3-release/ghc-8.8.3-aarch64-deb9-linux.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.8.3/ghc-8.8.3-aarch64-deb9-linux.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.8.3-release/ghc-8.8.3-aarch64-deb9-linux.tar.xz"
             content-length: 300943608
             sha1: c533c36439c13b06325aa9968d51e5078a0e16bd
             sha256: 2a6821d0e7326cfa7670851702924bbab3b092415ba41247c37419158327eed9
         8.10.1:
             # Mirrored from http://downloads.haskell.org/~ghc/8.10.1/ghc-8.10.1-aarch64-deb9-linux.tar.xz
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.10.1-release/ghc-8.10.1-aarch64-deb9-linux.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.10.1/ghc-8.10.1-aarch64-deb9-linux.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.10.1-release/ghc-8.10.1-aarch64-deb9-linux.tar.xz"
             content-length: 313033012
             sha1: 947f53273ac37a9478739f0f60a78eb30a9fff80
             sha256: c099011e07999db917e797fb5d89c31f075a562556ab99be8ab0accbf2a94db7
         8.10.2:
             # Mirrored from http://downloads.haskell.org/~ghc/8.10.2/ghc-8.10.2-aarch64-deb10-linux.tar.xz
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.10.2-release/ghc-8.10.2-aarch64-deb10-linux.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.10.2/ghc-8.10.2-aarch64-deb10-linux.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.10.2-release/ghc-8.10.2-aarch64-deb10-linux.tar.xz"
             content-length: 310742020
             sha1: 22bd6d4f9f9004cc8e0dd74d0da16bb90ec73903
             sha256: 5cf24189077e6e2dce2aa16367ad8a53f603e751a15010dfb23d067206e55593
         8.10.3:
             # Mirrored from http://downloads.haskell.org/~ghc/8.10.3/ghc-8.10.3-aarch64-deb10-linux.tar.xz
-            url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.10.3-release/ghc-8.10.3-aarch64-deb10-linux.tar.xz"
+            url: "https://downloads.haskell.org/~ghc/8.10.3/ghc-8.10.3-aarch64-deb10-linux.tar.xz"
+            #mirror_url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-8.10.3-release/ghc-8.10.3-aarch64-deb10-linux.tar.xz"
             content-length: 312544072
             sha1: 4b12cc5609493d2ffcfa671f4872b20bcb4357a9
             sha256: a531432d505a1fe886cdc8639d168eb1c92d76464c1270713e01ce81891bbadb