Try without ghcjs overrides for pre-existing package (might not be needed now)

Author: hamishmack

overlays/haskell.nix

@@ -782,10 +782,7 @@ final: prev: {
                         "ghc-bignum"]
                       ++ final.lib.optionals (builtins.compareVersions config.compiler.version "9.9" >= 0) [
                         "ghc-internal"]
-                      ++ final.lib.optionals (pkgs.stdenv.hostPlatform.isGhcjs) ([
-                        # ghci and its dependencies
-                        "ghci" "binary" "bytestring" "containers" "template-haskell" "array" "deepseq" "filepath" "ghc-boot" "ghc-boot-th" "ghc-heap" "transformers" "unix" "directory" "time" "ghc-platform" "os-string"
-                      ] ++ final.lib.optionals (builtins.compareVersions config.compiler.version "8.11" < 0) [
+                      ++ final.lib.optionals (builtins.compareVersions config.compiler.version "8.11" < 0) [
                         "ghcjs-prim" "ghcjs-th"]);
                     })
                     ({config, options, ...}: {

test/with-packages/default.nix

@@ -108,7 +108,10 @@ in recurseIntoAttrs {
 
     passthru = {
       # Used for debugging with nix repl
-      inherit packages project;
+      packages = packages false;
+      project =  project false;
+      packages-exact = packages true;
+      project-exact =  project true;
     };
   };
 }