Add GHC 9.0.2 (#1338)

Co-authored-by: Ollie Charles <ollie@ocharles.org.uk>

Author: hamishmack

build.nix

@@ -24,7 +24,7 @@ in rec {
   tools = pkgs.lib.optionalAttrs (ifdLevel >= 3) (
     pkgs.recurseIntoAttrs ({
       cabal-latest = tool compiler-nix-name "cabal" "latest";
-    } // pkgs.lib.optionalAttrs (!__elem compiler-nix-name ["ghc901" "ghc921"]) {
+    } // pkgs.lib.optionalAttrs (!__elem compiler-nix-name ["ghc901" "ghc902" "ghc921"]) {
       hls-latest = tool compiler-nix-name "haskell-language-server" "latest";
       hlint-latest = tool compiler-nix-name "hlint" (if compiler-nix-name == "ghc865" then "3.2.7" else "latest");
     })

ci.nix

@@ -38,6 +38,7 @@
       ghc8106 = false;
       ghc8107 = true;
       ghc901 = false;
+      ghc902 = true;
       ghc921 = true;
       ghc810420210212 = false;
     });

compiler/ghc/default.nix

@@ -349,7 +349,7 @@ stdenv.mkDerivation (rec {
   dontStrip = true;
   dontPatchELF = true;
   noAuditTmpdir = true;
-} // lib.optionalAttrs (__elem ghc-version ["8.10.5" "8.10.6" "8.10.7" "9.2.1"] && stdenv.buildPlatform.isDarwin) {
+} // lib.optionalAttrs stdenv.buildPlatform.isDarwin {
   # ghc install on macOS wants to run `xattr -r -c`
   # The macOS version fails because it wants python 2.
   # The nix version of xattr does not support those args.