Support GHC 8.8.3

[bhipple]

This is now the default on NixPkgs, but it looks like we only have 8.8.2.

I wasn't able to find instructions on precisely how to do this in the readme, but I tried doing this:

diff --git a/nixpkgsForGhc/ghc883 b/nixpkgsForGhc/ghc883
new file mode 100644
index 0000000..b4726a7
--- /dev/null
+++ b/nixpkgsForGhc/ghc883
@@ -0,0 +1 @@
+ca0cb2c43f8231fc8e13ef5f40aad40ddbf4a44b
\ No newline at end of file

and then running

  alias update="$(nix-build --no-out-link update.nix)/bin/update"
  update --name stable --revision 1.1

but it died with some stack errors.

[infinisil]

Can't support 8.8.3 without at least HIE itself supporting that version, which it currently doesn't.

[infinisil]

See #52 for the error when trying to run the update script

[kylegentle]

Lucky for us, it looks like 8.8.3 support was added today in HIE. ☺️

haskell/haskell-ide-engine#1697

[tofutim]

so... what's next?

[bhipple]

A brave soul has to stare into the abyss of code-generated nix expressions and debug. It seems we have two paths forward:

A. Have someone take up maintainership of the now abandoned stack2nix generator and fix it, as done here, or

B. Switch to haskell.nix, as discussed here.

[Anton-Latukha]

From exp or measuring the probabilities - it is unreal that anyone would adopt and work on stack2nix up to a nice state. It always was half-working and half-going.
input-output-hk/stack2nix#171

It is a big risk to rely on stack2nix in technical projects, at this point.

haskell.nix advertises Stack support also, is also an IOHK creation, team is large and respectable, development is flowing.

[infinisil]

See #19 (comment) and future comments for updates on haskell.nix builds

[infinisil]

With #64 merged, 8.6.5 and 8.8.3 are now the only two supported versions, so I can finally close this :)