Add cabal-issue-8352-workaround

See haskell/cabal#8352

Author: hamishmack

build.nix

@@ -49,7 +49,7 @@ in rec {
       # Update scripts use the internal nix-tools and cabal-install (compiled with a fixed GHC version)
       nix-tools = haskell.internal-nix-tools;
       cabal-install = haskell.internal-cabal-install;
-      inherit (haskell) update-index-state-hashes;
+      inherit (haskell) update-index-state-hashes cabal-issue-8352-workaround;
     };
     update-stackage = haskell.callPackage ./scripts/update-stackage.nix {
       inherit (pkgs) stdenv lib writeScript coreutils glibc git

lib/cabal-project-parser.nix

@@ -145,7 +145,7 @@ let
       repoContents = if inputMap ? ${attrs.url}
         # If there is an input use it to make `file:` url and create a suitable `.cabal/packages/${name}` directory
         then evalPackages.runCommand name ({
-          nativeBuildInputs = [ cabal-install ];
+          nativeBuildInputs = [ cabal-install ] ++ evalPackages.haskell-nix.cabal-issue-8352-workaround;
           preferLocalBuild = true;
         }) ''
             HOME=$(mktemp -d)
@@ -162,7 +162,7 @@ let
             cp -r $HOME/.cabal/packages/${name} $out
         ''
         else evalPackages.runCommand name ({
-          nativeBuildInputs = [ cabal-install evalPackages.curl nix-tools ];
+          nativeBuildInputs = [ cabal-install evalPackages.curl nix-tools ] ++ evalPackages.haskell-nix.cabal-issue-8352-workaround;
           LOCALE_ARCHIVE = pkgs.lib.optionalString (evalPackages.stdenv.buildPlatform.libc == "glibc") "${evalPackages.glibcLocales}/lib/locale/locale-archive";
           LANG = "en_US.UTF-8";
           preferLocalBuild = true;

overlays/haskell.nix

@@ -205,61 +205,64 @@ final: prev: {
         # Creates Cabal local repository from { name, index } set.
         mkLocalHackageRepo = import ../mk-local-hackage-repo final;
 
+        # Dummy version of ghc to work around https://github.com/haskell/cabal/issues/8352
+        cabal-issue-8352-workaround = [
+          (final.writeTextFile {
+            name = "dummy-ghc";
+            executable = true;
+            destination = "/bin/ghc";
+            text = ''
+              #!${final.runtimeShell}
+              case "$*" in
+                --version*)
+                  echo 'The Glorious Glasgow Haskell Compilation System, version 8.10.7'
+                  ;;
+                --numeric-version*)
+                  echo '8.10.7'
+                  ;;
+                --supported-languages*)
+                  echo Haskell2010
+                  ;;
+                --info*)
+                  echo '[]'
+                  ;;
+                *)
+                  echo "Unknown argument '$*'" >&2
+                  exit 1
+                  ;;
+              esac
+              exit 0
+            '';
+          })
+          (final.writeTextFile {
+            name = "dummy-ghc";
+            executable = true;
+            destination = "/bin/ghc-pkg";
+            text = ''
+              #!${final.runtimeShell}
+              case "$*" in
+                --version*)
+                  echo 'GHC package manager version 8.10.7'
+                  ;;
+                *)
+                  echo "Unknown argument '$*'" >&2
+                  exit 1
+                  ;;
+              esac
+              exit 0
+            '';
+          })
+        ];
+
         dotCabal = { index-state, sha256, cabal-install, extra-hackage-tarballs ? {}, extra-hackage-repos ? {}, ... }@args:
             let
               allTarballs = hackageTarball args // extra-hackage-tarballs;
               allNames = final.lib.concatStringsSep "-" (builtins.attrNames allTarballs);
               # Main Hackage index-state is embedded in its name and thus will propagate to
               # dotCabalName anyway.
               dotCabalName = "dot-cabal-" + allNames;
-              # Dummy version of ghc to work around https://github.com/haskell/cabal/issues/8352
-              dummy-ghc = final.writeTextFile {
-                name = "dummy-ghc";
-                executable = true;
-                destination = "/bin/ghc";
-                text = ''
-                  #!${final.runtimeShell}
-                  case "$*" in
-                    --version*)
-                      echo 'The Glorious Glasgow Haskell Compilation System, version 8.10.7'
-                      ;;
-                    --numeric-version*)
-                      echo '8.10.7'
-                      ;;
-                    --supported-languages*)
-                      echo Haskell2010
-                      ;;
-                    --info*)
-                      echo '[]'
-                      ;;
-                    *)
-                      echo "Unknown argument '$*'" >&2
-                      exit 1
-                      ;;
-                  esac
-                  exit 0
-                '';
-              };
-              dummy-ghc-pkg = final.writeTextFile {
-                name = "dummy-ghc";
-                executable = true;
-                destination = "/bin/ghc-pkg";
-                text = ''
-                  #!${final.runtimeShell}
-                  case "$*" in
-                    --version*)
-                      echo 'GHC package manager version 8.10.7'
-                      ;;
-                    *)
-                      echo "Unknown argument '$*'" >&2
-                      exit 1
-                      ;;
-                  esac
-                  exit 0
-                '';
-              };
               tarballRepoFor = name: index: final.runCommand "tarballRepo_${name}" {
-                nativeBuildInputs = [ cabal-install dummy-ghc dummy-ghc-pkg ];
+                nativeBuildInputs = [ cabal-install cabal-issue-8352-workaround ];
               } ''
                 set -xe
 

scripts/update-hackage.nix

@@ -1,7 +1,7 @@
 { stdenv, lib, writeScript, coreutils, glibc, git, openssh
 , nix-tools, cabal-install, nixFlakes
 , gawk, bash, curl, findutils
-, update-index-state-hashes }@args:
+, update-index-state-hashes, cabal-issue-8352-workaround }@args:
 
 import ./update-external.nix
 (removeAttrs args ["update-index-state-hashes"]) {