Enable ghc plugin test for 9.8.1 and above (#2158)

* Enable ghc plugin test for 9.8.1 and above

* ifdLevel 0

* ifdLevel 1

* Fix reinstallableLibGhc = false for ghc 9.8.1

* Use reinstallableLibGhc = false to get plugin test working

* ifdLevel 2

* ifdLevel 3

* Fix version check

* Disable plugin test for ghc HEAD

Author: hamishmack

modules/component-driver.nix

@@ -77,6 +77,8 @@ in
     ++ lib.optionals (builtins.compareVersions config.compiler.version "8.11" >= 0) [
       # stm and exceptions are needed by the GHC package since 9.0.1
       "stm" "exceptions"]
+    ++ lib.optionals (builtins.compareVersions config.compiler.version "9.8.1" >= 0) [
+      "semaphore-compat"]
     )
     ++ lib.optionals (!config.reinstallableLibGhc || __elem config.compiler.nix-name ["ghc865"]) [
       "ghc-heap"

test/plugin/default.nix

@@ -6,6 +6,9 @@ let
   project = project' {
     inherit compiler-nix-name evalPackages;
     src = testSrc "plugin";
+    modules = [{
+      reinstallableLibGhc = builtins.compareVersions buildPackages.haskell-nix.compiler.${compiler-nix-name}.version "9.8.1" < 0;
+    }];
   };
 
   packages = project.hsPkgs;
@@ -17,8 +20,7 @@ in recurseIntoAttrs {
 
   # 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
+    || compiler-nix-name == "ghc9920231203"
     || stdenv.hostPlatform.isMusl
     || stdenv.hostPlatform.isGhcjs
     || stdenv.hostPlatform.isWindows