anchor.diff:          # Binary package for various platforms.
           build = nixpkgs.lib.genAttrs systems (system: self.packages.${system}.nix);
   
  -        build-static = nixpkgs.lib.genAttrs systems (system: self.packages.${system}.nix-static);
  +        build-static = nixpkgs.lib.genAttrs linuxSystems (system: self.packages.${system}.nix-static);
   
           # Perl bindings for various platforms.
           perlBindings = nixpkgs.lib.genAttrs systems (system: self.packages.${system}.nix.perl-bindings);
  
positive.code: 
        checks = forAllSystems (system: {
          binaryTarball = self.hydraJobs.binaryTarball.${system};
          build-static = self.hydraJobs.build-static.${system};
          perlBindings = self.hydraJobs.perlBindings.${system};
        });
  
        packages = forAllSystems (system: {
          inherit (nixpkgsFor.${system}) nix;
  
          nix-static = let
            nixpkgs = nixpkgsFor.${system}.pkgsStatic;
          in with commonDeps nixpkgs; nixpkgs.stdenv.mkDerivation {
  
negative.code: 
        officialRelease = false;
  
        linuxSystems = [ "x86_64-linux" "i686-linux" "aarch64-linux" ];
        systems = linuxSystems ++ [ "x86_64-darwin" ];
  
        forAllSystems = f: nixpkgs.lib.genAttrs systems (system: f system);
  
  