Just test a small subset of the full CI

Author: hamishmack

ci.nix

@@ -63,19 +63,19 @@
       # from here (so that is no longer cached) also remove ./materialized/ghcXXX.
       # Update supported-ghc-versions.md to reflect any changes made here.
       nixpkgs.lib.optionalAttrs (builtins.elem nixpkgsName ["R2411" "R2505"]) {
-        ghc96 = false;
-        ghc98 = false;
-        ghc910 = false;
-        ghc912 = false;
+#        ghc96 = false;
+#        ghc98 = false;
+#        ghc910 = false;
+#        ghc912 = false;
       } // nixpkgs.lib.optionalAttrs (nixpkgsName == "unstable") {
-        ghc96 = true;
-        ghc98 = true;
-        ghc98llvm = false;
-        ghc910 = true;
-        ghc910llvm = false;
+#        ghc96 = true;
+#        ghc98 = true;
+#        ghc98llvm = false;
+#        ghc910 = true;
+#        ghc910llvm = false;
         ghc912 = true;
-        ghc912llvm = true;
-        ghc913 = true;
+#        ghc912llvm = true;
+#        ghc913 = true;
       })));
   crossSystems = nixpkgsName: nixpkgs: compiler-nix-name:
     # We need to use the actual nixpkgs version we're working with here, since the values

flake.nix

@@ -101,9 +101,9 @@
 
       # systems supported by haskell.nix
       systems = [
-        "x86_64-linux"
+#        "x86_64-linux"
       ] ++ (if runningHydraEvalTest then [ ] else [
-        "x86_64-darwin"
+#        "x86_64-darwin"
         "aarch64-darwin"
       ]);
 
@@ -252,8 +252,8 @@
               cf.defaultNix.hydraJobs;
           in
           self.allJobs.${system}
-          // lib.optionalAttrs (ifdLevel > 2)
-            { nix-tools = nix-tools-hydraJobs.${system} or { }; }
+#          // lib.optionalAttrs (ifdLevel > 2)
+#            { nix-tools = nix-tools-hydraJobs.${system} or { }; }
         );
 
         devShells = forEachSystemPkgs (pkgs: