anchor.diff:      configureFlags = [
         "--with-sdkdir=${placeholder "out"}/include/xorg"
       ];
  +    meta = attrs.meta // {
  +      broken = isDarwin; # never worked: https://hydra.nixos.org/job/nixpkgs/trunk/xorg.xf86inputmouse.x86_64-darwin
  +    };
     });
   
     xf86inputjoystick = super.xf86inputjoystick.overrideAttrs (attrs: {
       configureFlags = [
         "--with-sdkdir=${placeholder "out"}/include/xorg"
       ];
  -  });
  +    meta = attrs.meta // {
  +      broken = isDarwin; # never worked: https://hydra.nixos.org/job/nixpkgs/trunk/xorg.xf86inputjoystick.x86_64-darwin
  +    };
  +  });
  +
  +  xf86inputkeyboard = brokenOnDarwin super.xf86inputkeyboard; # never worked: https://hydra.nixos.org/job/nixpkgs/trunk/xorg.xf86inputkeyboard.x86_64-darwin
   
     xf86inputlibinput = super.xf86inputlibinput.overrideAttrs (attrs: {
       outputs = [ "out" "dev" ];
  
positive.code:   malloc0ReturnsNullCrossFlag = lib.optional
      (stdenv.hostPlatform != stdenv.buildPlatform)
      "--enable-malloc0returnsnull";
  in
  self: super:
  {
  
negative.code:       platforms = ["i686-linux" "x86_64-linux"];
      };
    });
  
    xf86inputvoid = brokenOnDarwin super.xf86inputvoid; # never worked: https://hydra.nixos.org/job/nixpkgs/trunk/xorg.xf86inputvoid.x86_64-darwin
    xf86videodummy = brokenOnDarwin super.xf86videodummy; # never worked: https://hydra.nixos.org/job/nixpkgs/trunk/xorg.xf86videodummy.x86_64-darwin
    xf86videosuncg6 = brokenOnDarwin super.xf86videosuncg6; # never worked: https://hydra.nixos.org/job/nixpkgs/trunk/xorg.xf86videosuncg6.x86_64-darwin
    xf86videosunffb = brokenOnDarwin super.xf86videosunffb; # never worked: https://hydra.nixos.org/job/nixpkgs/trunk/xorg.xf86videosunffb.x86_64-darwin
    xf86videosunleo = brokenOnDarwin super.xf86videosunleo; # never worked: https://hydra.nixos.org/job/nixpkgs/trunk/xorg.xf86videosunleo.x86_64-darwin
  
    # Obsolete drivers that don't compile anymore.
    xf86videoark     = super.xf86videoark.overrideAttrs     (attrs: { meta = attrs.meta // { broken = true; }; });
  