Disable linear-base integration.

Unfortunately, I don't think there's a reasonable way to conditionalize the
linear-base-integration packages until Cabal 3.8 is released. Once nix-flake
integration (#66) is merged, we can perhaps do it for _those_ builds.

cabal.project

@@ -81,8 +81,6 @@ packages:
   ./integrations/concat-extensions/integration/categorifier-concat-extensions-integration.cabal
   ./integrations/concat-extensions/integration-test/categorifier-concat-extensions-integration-test.cabal
   ./integrations/fin/integration/categorifier-fin-integration.cabal
-  ./integrations/linear-base/integration/categorifier-linear-base-integration.cabal
-  ./integrations/linear-base/integration-test/categorifier-linear-base-integration-test.cabal
   ./integrations/unconcat/category/categorifier-unconcat-category.cabal
   ./integrations/unconcat/integration/categorifier-unconcat-integration.cabal
   ./integrations/unconcat/integration-test/categorifier-unconcat-integration-test.cabal
@@ -91,3 +89,8 @@ packages:
   ./plugin/categorifier-plugin.cabal
   ./plugin-test/categorifier-plugin-test.cabal
   ./th/categorifier-th.cabal
+-- __TODO__: Uncomment below once Cabal 3.8 is released.
+-- if impl(ghc >= 9.0.0)
+--   packages:
+--     ./integrations/linear-base/integration/categorifier-linear-base-integration.cabal
+--     ./integrations/linear-base/integration-test/categorifier-linear-base-integration-test.cabal

flake.nix

@@ -84,7 +84,16 @@
         };
 
         parseCabalProject = import ./parse-cabal-project.nix;
-        categorifierPackages = parseCabalProject ./cabal.project;
+        allCategorifierPackages = parseCabalProject ./cabal.project;
+        excluded = [];
+          # if ghcVer == "ghc884" || ghcVer == "ghc8107"
+          # then
+          #   [ categorifier-linear-base-integration
+          #     categorifier-linear-base-integration-test
+          #   ]
+          # else [];
+        categorifierPackages =
+          builtins.filter ({ name, ... }: !(builtins.elem name excluded)) allCategorifierPackages;
         categorifierPackageNames =
           builtins.map ({ name, ... }: name) categorifierPackages;
         haskellOverlay = self: super: