Merge pull request #219931 from berberman/pandoc-warp

pandoc: remove reference to warp

pkgs/development/tools/pandoc/default.nix

@@ -9,10 +9,20 @@ in
     buildDepends = drv.buildDepends or [] ++ [haskellPackages.file-embed];
     buildTools = (drv.buildTools or []) ++ [ removeReferencesTo ];
 
+    # Normally, the static linked executable shouldn't refer to any library or the compiler.
+    # This is not always the case when the dependency has Paths_* module generated by Cabal,
+    # where bindir, datadir, and libdir contain the path to the library, and thus make the
+    # executable indirectly refer to GHC. However, most Haskell programs only use Paths_*.version for
+    # getting the version at runtime, so it's safe to remove the references to them.
+    # This is true so far for pandoc-types and warp.
+    # For details see: https://github.com/NixOS/nixpkgs/issues/34376
     postInstall = drv.postInstall or "" + ''
       remove-references-to \
         -t ${haskellPackages.pandoc-types} \
         $out/bin/pandoc
+      remove-references-to \
+        -t ${haskellPackages.warp} \
+        $out/bin/pandoc
     '' + lib.optionalString (stdenv.buildPlatform == stdenv.hostPlatform) ''
       mkdir -p $out/share/bash-completion/completions
       $out/bin/pandoc --bash-completion > $out/share/bash-completion/completions/pandoc
@@ -25,5 +35,5 @@ in
     # lead to a transitive runtime dependency on the whole GHC distribution.
     # This should ideally be fixed in haskellPackages (or even Cabal),
     # but a minimal pandoc is important enough to patch it manually.
-    disallowedReferences = [ haskellPackages.pandoc-types ];
+    disallowedReferences = [ haskellPackages.pandoc-types haskellPackages.warp ];
   })