anchor.diff:        inherit (buildPackages.python3Packages) sphinx;
         buildLlvmPackages = buildPackages.llvmPackages_9;
         llvmPackages = pkgs.llvmPackages_9;
  -    } // muslArgs);
  -    ghc901 = callPackage ../development/compilers/ghc/9.0.1.nix ({
  +    };
  +    ghc901 = callPackage ../development/compilers/ghc/9.0.1.nix {
         # aarch64 ghc8102Binary exceeds max output size on hydra
         bootPkgs = if stdenv.isAarch64 || stdenv.isAarch32 then
             packages.ghc8102BinaryMinimal
  
positive.code:   # Use this rather than `rec { ... }` below for sake of overlays.
    inherit (pkgs.haskell) compiler packages;
  
    # temporarily use python 3.8 since 3.9 fails with musl
    # https://github.com/NixOS/nixpkgs/issues/131557
    muslArgs = pkgs.lib.optionalAttrs pkgs.stdenv.buildPlatform.isMusl {
      python3 = buildPackages.python38;
    };
  
  in {
    lib = haskellLib;
  
  
negative.code:       minimal = true;
      };
  
      ghc884 = callPackage ../development/compilers/ghc/8.8.4.nix {
        # aarch64 ghc865Binary gets SEGVs due to haskell#15449 or similar
        # Musl bindists do not exist for ghc 8.6.5, so we use 8.10.* for them
        bootPkgs = if stdenv.isAarch64 || stdenv.targetPlatform.isMusl then
  