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Nix: Wrap GHC and HLS, specifically, to provide (DY)?LD_LIBRARY_PATH.

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We clearly do need this environment variable (at least on macOS); otherwise GHC spits out a slew of errors along the lines of "cannot find libodbc.dylib".

However, adding it directly to the shell causes serious problems. Wrapping GHC should limit the damage.

We've seen similar issues on macOS.

PR-URL: https://github.com/hasura/graphql-engine-mono/pull/9203
Co-authored-by: Philip Lykke Carlsen <358550+plcplc@users.noreply.github.com>
GitOrigin-RevId: 9468d31e5b8ec86196809844842a1668386054bc
This commit is contained in:
Samir Talwar 2023-05-22 16:14:25 +02:00 committed by hasura-bot
parent 4b50704061
commit 3287181cc4
2 changed files with 45 additions and 5 deletions
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2
flake.nix
View File

@ -39,7 +39,7 @@
formatter = pkgs.nixpkgs-fmt;
devShells.default = import ./nix/shell.nix { inherit pkgs; };
devShells.default = import ./nix/shell.nix { inherit pkgs system; };
}
);
}

48
nix/shell.nix
View File

@ -1,7 +1,14 @@
{ pkgs }:
{ pkgs, system }:
let
versions = import ./versions.nix { inherit pkgs; };
# empty package, for shenanigans
empty = builtins.derivation {
inherit system;
name = "empty";
builder = pkgs.writeShellScript "null.sh" "${pkgs.coreutils}/bin/mkdir $out";
};
# Unix ODBC Support
freetdsWithODBC = pkgs.freetds.override {
odbcSupport = true;
@ -28,6 +35,40 @@ let
configureFlags = [ "--disable-gui" "--sysconfdir=${odbcConfiguration}" ];
});
# Ensure that GHC and HLS have access to all the dynamic libraries we have kicking around.
ghc =
let original = pkgs.haskell.compiler.${pkgs.ghcName};
in pkgs.stdenv.mkDerivation
{
name = original.name;
src = empty;
buildInputs = [ original pkgs.makeWrapper ];
installPhase = ''
mkdir -p "$out/bin"
makeWrapper ${original}/bin/ghc "$out/bin/ghc" \
--set LD_LIBRARY_PATH ${pkgs.lib.strings.makeLibraryPath dynamicLibraries} \
--set DYLD_LIBRARY_PATH ${pkgs.lib.strings.makeLibraryPath dynamicLibraries}
'';
};
hls =
let original = pkgs.haskell.packages.${pkgs.ghcName}.haskell-language-server;
in pkgs.stdenv.mkDerivation
{
name = original.name;
src = empty;
buildInputs = [ original pkgs.makeWrapper ];
installPhase = ''
mkdir -p "$out/bin"
makeWrapper ${original}/bin/haskell-language-server "$out/bin/haskell-language-server" \
--set LD_LIBRARY_PATH ${pkgs.lib.strings.makeLibraryPath dynamicLibraries} \
--set DYLD_LIBRARY_PATH ${pkgs.lib.strings.makeLibraryPath dynamicLibraries}
makeWrapper ${original}/bin/haskell-language-server-wrapper "$out/bin/haskell-language-server-wrapper" \
--set LD_LIBRARY_PATH ${pkgs.lib.strings.makeLibraryPath dynamicLibraries} \
--set DYLD_LIBRARY_PATH ${pkgs.lib.strings.makeLibraryPath dynamicLibraries}
'';
};
baseInputs = [
pkgs.stdenv
pkgs.jq
@ -56,15 +97,14 @@ let
haskellInputs = [
pkgs.cabal2nix
# The correct version of GHC.
pkgs.haskell.compiler.${pkgs.ghcName}
ghc
hls
pkgs.haskell.packages.${pkgs.ghcName}.alex
pkgs.haskell.packages.${pkgs.ghcName}.apply-refact
(versions.ensureVersion pkgs.haskell.packages.${pkgs.ghcName}.cabal-install)
pkgs.haskell.packages.${pkgs.ghcName}.ghcid
pkgs.haskell.packages.${pkgs.ghcName}.happy
pkgs.haskell.packages.${pkgs.ghcName}.haskell-language-server
(versions.ensureVersion pkgs.haskell.packages.${pkgs.ghcName}.hlint)
pkgs.haskell.packages.${pkgs.ghcName}.hoogle
pkgs.haskell.packages.${pkgs.ghcName}.hspec-discover