Fix ghc plugin tests

Author: hamishmack

test/cabal.project.local

@@ -22,7 +22,7 @@ repository head.hackage.ghc.haskell.org
      f76d08be13e9a61a377a85e2fb63f4c5435d40f8feb3e12eb05905edb8cdea89
      26021a13b401500c8eb2761ca95c61f2d625bfef951b939a8124ed12ecf07329
      7541f32a4ccca4f97aea3b22f5e593ba2c0267546016b992dfadcd2fe944e55d
-  --sha256: sha256-dx4WtCafVcu1+IlaK1ABcqQ1UummqTN8HRo3svRdTOE=
+  --sha256: sha256-gDLkCAZPa4xALm37iKVjDVnmBj0CwNKT1qzY/xiiPOY=
 
 repository ghcjs-overlay
   url: https://raw.githubusercontent.com/input-output-hk/hackage-overlay-ghcjs/ed91ac93832fdfc50471ab8df13b8174e91b35ed

test/plugin/default.nix

@@ -6,10 +6,9 @@ let
   project = project' {
     inherit compiler-nix-name evalPackages;
     src = testSrc "plugin";
-    cabalProjectLocal = builtins.readFile ../cabal.project.local;
-    modules = [{
-      reinstallableLibGhc = builtins.compareVersions buildPackages.haskell-nix.compiler.${compiler-nix-name}.version "9.8.1" < 0;
-    }];
+    cabalProjectLocal = builtins.readFile ../cabal.project.local + ''
+      allow-newer: polysemy-plugin:containers, polysemy:containers
+    '';
   };
 
   packages = project.hsPkgs;
@@ -21,7 +20,7 @@ in recurseIntoAttrs {
 
   # Not sure why this breaks for ghc 8.10.7
   meta.disabled = compiler-nix-name == "ghc8107"
-    || builtins.elem compiler-nix-name [ "ghc9101" "ghc91120240504" ]
+    || builtins.elem compiler-nix-name [ "ghc9101x" "ghc91120240620" ]
     || stdenv.hostPlatform.isMusl
     || stdenv.hostPlatform.isGhcjs
     || stdenv.hostPlatform.isWindows