ghcWithPackages: handle the boot dylib links separately for GHC 9.6

From GHC 9.6 on, the boot libraries (dependencies of the ghc library) are
present in a separate directory after the installation, and thus the
wrapper environment provided by ghcWithPackages needs to handle the links
to the boot dynamic libraries separately than other ordinary ones.

1 files changed, 13 insertions, 1 deletions

diff --git a/pkgs/development/haskell-modules/with-packages-wrapper.nix b/pkgs/development/haskell-modules/with-packages-wrapper.nix
index 34eb2b71d759..78e0bb91232e 100644
--- a/pkgs/development/haskell-modules/with-packages-wrapper.nix
+++ b/pkgs/development/haskell-modules/with-packages-wrapper.nix
@@ -55,6 +55,12 @@ let
   libDir        = if isHaLVM then "$out/lib/HaLVM-${ghc.version}"
                   else "$out/lib/${ghc.targetPrefix}${ghc.haskellCompilerName}"
                     + lib.optionalString (ghc ? hadrian) "/lib";
+  # Boot libraries for GHC are present in a separate directory.
+  bootLibDir    = let arch = if stdenv.targetPlatform.isAarch64
+                             then "aarch64"
+                             else "x86_64";
+                      platform = if stdenv.targetPlatform.isDarwin then "osx" else "linux";
+                  in "${ghc}/lib/${ghc.haskellCompilerName}/lib/${arch}-${platform}-${ghc.haskellCompilerName}";
   docDir        = "$out/share/doc/ghc/html";
   packageCfgDir = "${libDir}/package.conf.d";
   paths         = lib.concatLists (
@@ -131,11 +137,17 @@ symlinkJoin {
   '' + (lib.optionalString (stdenv.targetPlatform.isDarwin && !isGhcjs && !stdenv.targetPlatform.isiOS) ''
     # Work around a linker limit in macOS Sierra (see generic-builder.nix):
     local packageConfDir="${packageCfgDir}";
-    local dynamicLinksDir="$out/lib/links"
+    local dynamicLinksDir="$out/lib/links";
     mkdir -p $dynamicLinksDir
     # Clean up the old links that may have been (transitively) included by
     # symlinkJoin:
     rm -f $dynamicLinksDir/*
+
+    # Boot libraries are located differently than other libraries since GHC 9.6, so handle them separately.
+    if [[ -x "${bootLibDir}" ]]; then
+      ln -s "${bootLibDir}"/*.dylib $dynamicLinksDir
+    fi
+
     for d in $(grep -Poz "dynamic-library-dirs:\s*\K .+\n" $packageConfDir/*|awk '{print $2}'|sort -u); do
       ln -s $d/*.dylib $dynamicLinksDir
     done