native aarch64 support

compiler/ghc/default.nix

@@ -7,7 +7,7 @@
 
 # build-tools
 , bootPkgs
-, autoconf, automake, coreutils, fetchurl, fetchpatch, perl, python3, m4, sphinx
+, autoconf, automake, coreutils, fetchurl, fetchpatch, perl, python3, m4, sphinx, numactl
 , autoreconfHook
 , bash
 
@@ -116,7 +116,8 @@ let
   libDeps = platform: stdenv.lib.optional enableTerminfo [ ncurses ]
     ++ [targetLibffi]
     ++ stdenv.lib.optional (!enableIntegerSimple) gmp
-    ++ stdenv.lib.optional (platform.libc != "glibc" && !targetPlatform.isWindows) libiconv;
+    ++ stdenv.lib.optional (platform.libc != "glibc" && !targetPlatform.isWindows) libiconv
+    ++ stdenv.lib.optional platform.isLinux numactl;
 
   toolsForTarget =
     if hostPlatform == buildPlatform then

compiler/old-ghc-nix/old-ghc-nix.json

@@ -1,7 +1,6 @@
 {
-  "url": "https://github.com/angerman/old-ghc-nix",
-  "rev": "bf640c1a3f55203bb7492a366c6492ff3c211332",
-  "date": "2020-02-27T19:53:36+08:00",
-  "sha256": "050g06911rpmvn66y5lmnszswz17flw3b979imdchc2apji6a1sm",
+  "url": "https://github.com/traviswhitaker/old-ghc-nix",
+  "rev": "0d136da6e48de6d1256c8aa2b281662e93f9e486",
+  "sha256": "1cp6aksb6ldgjb5zyqikyjrjij79n9z7wd86migph0wp19vmszkf",
   "fetchSubmodules": false
 }

nix-tools/regenerate.nix

@@ -54,7 +54,11 @@ in
       # "stm" "terminfo"
      ];
     }];
-  }).nix-tools.components.exes.plan-to-nix; in
+  }).nix-tools.components.exes.plan-to-nix;
+  bootstrap = if pkgs.targetPlatform.isAarch64
+              then haskell-nix.bootstrap.compiler.ghc882
+              else haskell-nix.bootstrap.compiler.ghc844;
+  in
 with builtins;
 with stdenv.lib;
 writeShellScriptBin "update-nix-tools" ''