Cabal fix for ghc-options -fplugin in ghc >=9.6.3

overlays/bootstrap.nix

@@ -241,6 +241,7 @@ in {
                 ++ final.lib.optionals (final.stdenv.targetPlatform.isGhcjs) (fromUntil "9.6.1"  "9.6.3"  ./patches/ghc/ghc-9.6-JS-implement-TH-support.patch)
                 ++ final.lib.optionals (final.stdenv.targetPlatform.isGhcjs) (fromUntil "9.6.3"  "9.8"    ./patches/ghc/ghc-9.6.3-JS-implement-TH-support.patch)
                 ++ fromUntil "9.8.1"  "9.8.2"  ./patches/ghc/ghc-9.8-cabal-c-soures-fix.patch
+                ++ fromUntil "9.6.3"  "9.9"    ./patches/ghc/ghc-9.6.3-Cabal-9384.patch
 
                 # the following is a partial reversal of https://gitlab.haskell.org/ghc/ghc/-/merge_requests/4391, to address haskell.nix#1227
                 ++ final.lib.optional (versionAtLeast "8.10.6" && versionLessThan "9.0" && final.stdenv.targetPlatform.isAarch64) ./patches/ghc/mmap-next.patch

overlays/patches/ghc/ghc-9.6.3-Cabal-9384.patch

@@ -0,0 +1,48 @@
+diff --git a/libraries/Cabal/Cabal/src/Distribution/Simple/GHC.hs b/libraries/Cabal/Cabal/src/Distribution/Simple/GHC.hs
+index 9d653f858..1fbd15318 100644
+--- a/libraries/Cabal/Cabal/src/Distribution/Simple/GHC.hs
++++ b/libraries/Cabal/Cabal/src/Distribution/Simple/GHC.hs
+@@ -1861,18 +1861,12 @@ libAbiHash verbosity _pkg_descr lbi lib clbi = do
+       libBi = libBuildInfo lib
+       comp        = compiler lbi
+       platform    = hostPlatform lbi
+-      vanillaArgs0 =
++      vanillaArgs =
+         (componentGhcOptions verbosity lbi libBi clbi (componentBuildDir lbi clbi))
+         `mappend` mempty {
+           ghcOptMode         = toFlag GhcModeAbiHash,
+           ghcOptInputModules = toNubListR $ exposedModules lib
+         }
+-      vanillaArgs =
+-          -- Package DBs unnecessary, and break ghc-cabal. See #3633
+-          -- BUT, put at least the global database so that 7.4 doesn't
+-          -- break.
+-          vanillaArgs0 { ghcOptPackageDBs = [GlobalPackageDB]
+-                       , ghcOptPackages = mempty }
+       sharedArgs = vanillaArgs `mappend` mempty {
+                        ghcOptDynLinkMode = toFlag GhcDynamicOnly,
+                        ghcOptFPic        = toFlag True,
+diff --git a/libraries/Cabal/Cabal/src/Distribution/Simple/GHCJS.hs b/libraries/Cabal/Cabal/src/Distribution/Simple/GHCJS.hs
+index c8721746a..dcd5b3230 100644
+--- a/libraries/Cabal/Cabal/src/Distribution/Simple/GHCJS.hs
++++ b/libraries/Cabal/Cabal/src/Distribution/Simple/GHCJS.hs
+@@ -1573,18 +1573,12 @@ libAbiHash verbosity _pkg_descr lbi lib clbi = do
+       libBi = libBuildInfo lib
+       comp        = compiler lbi
+       platform    = hostPlatform lbi
+-      vanillaArgs0 =
++      vanillaArgs =
+         (componentGhcOptions verbosity lbi libBi clbi (componentBuildDir lbi clbi))
+         `mappend` mempty {
+           ghcOptMode         = toFlag GhcModeAbiHash,
+           ghcOptInputModules = toNubListR $ exposedModules lib
+         }
+-      vanillaArgs =
+-          -- Package DBs unnecessary, and break ghc-cabal. See #3633
+-          -- BUT, put at least the global database so that 7.4 doesn't
+-          -- break.
+-          vanillaArgs0 { ghcOptPackageDBs = [GlobalPackageDB]
+-                       , ghcOptPackages = mempty }
+       sharedArgs = vanillaArgs `mappend` mempty {
+                        ghcOptDynLinkMode = toFlag GhcDynamicOnly,
+                        ghcOptFPic        = toFlag True,

test/default.nix

@@ -218,6 +218,7 @@ let
     ca-derivations-include = callTest ./ca-derivations-include { inherit CADerivationsEnabled; };
     test-only = callTest ./test-only { inherit util; };
     cabal-project-nix-path = callTest ./cabal-project-nix-path {};
+    plugin = callTest ./plugin {};
     unit = unitTests;
   };
 

test/plugin/default.nix

@@ -0,0 +1,27 @@
+{ stdenv, lib, haskellLib, project', recurseIntoAttrs, testSrc, compiler-nix-name, evalPackages, buildPackages }:
+
+with lib;
+
+let
+  project = project' {
+    inherit compiler-nix-name evalPackages;
+    src = testSrc "plugin";
+  };
+
+  packages = project.hsPkgs;
+
+in recurseIntoAttrs {
+  ifdInputs = {
+    inherit (project) plan-nix;
+  };
+
+  # Not sure why this breaks for ghc 8.10.7
+  meta.disabled = compiler-nix-name == "ghc8107"
+    # TODO remove once polysemy works with ghc 9.8.1
+    || __compareVersions buildPackages.haskell-nix.compiler.${compiler-nix-name}.version "9.8.1" >= 0
+    || stdenv.hostPlatform.isMusl
+    || stdenv.hostPlatform.isGhcjs
+    || stdenv.hostPlatform.isWindows
+    || (haskellLib.isCrossHost && stdenv.hostPlatform.isAarch64);
+  build = packages.test.components.library;
+}

test/plugin/src/MyLib.hs

@@ -0,0 +1,4 @@
+module MyLib (someFunc) where
+
+someFunc :: IO ()
+someFunc = putStrLn "someFunc"

test/plugin/test.cabal

@@ -0,0 +1,11 @@
+cabal-version:      3.4
+name:               test
+version:            0.1.0.0
+build-type:         Simple
+
+library
+    exposed-modules:  MyLib
+    build-depends:    base, polysemy, polysemy-plugin
+    ghc-options:      -Wall -fplugin=Polysemy.Plugin
+    hs-source-dirs:   src
+    default-language: Haskell2010