chore(3p): use haskell-language-server from nixpkgs r/2333

Upstream haskellPackages has a newer haskell-language-server than we had
and it is always in sync with the default GHC version of that package
set which we incidentally use to build all haskell derivations in depot.

I hope this will not cause us more trouble in the future, but I've
gotten the impression that maralorn makes an effort to prevent
haskell-language-server from being broken in haskellPackages, so ideally
we'll never have to worry about hls again. If we do have to, we may need
to switch to easy-hls-nix.

Note that I haven't had the time yet to verify that the shells actually
work since it's kinda late now and the rebuilds are many.

Change-Id: I74c192d57355904cfa45bb76d70346792ba05af5
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2662
Tested-by: BuildkiteCI
Reviewed-by: glittershark <grfn@gws.fyi>

1 files changed, 0 insertions, 9 deletions

diff --git a/third_party/haskell-language-server/default.nix b/third_party/haskell-language-server/default.nix
deleted file mode 100644
index aab73ce3ea3c..000000000000
--- a/third_party/haskell-language-server/default.nix
+++ /dev/null
@@ -1,9 +0,0 @@
-{ pkgs, ... }:
-
-# TODO(sterni): replace this with upstream haskell-language-server or
-#               switch to easy-hls-nix as glittershark planned
-
-rec {
-  hls-nix = { ghc }: import ./hls.nix { inherit pkgs ghc; };
-  ghc884 = hls-nix { ghc = "ghc884"; };
-}