anchor.diff:      alsa-lib
       libx11
       xorg.libXcursor
  -    xorg.libXi
  -    xorg.libXinerama
  -    xorg.libXrandr
  +    libxi
  +    libxinerama
  +    libxrandr
     ];
   
     installPhase = ''
  
positive.code: 
  , alsa-lib
  , libx11
  , xorg
  
  , channel ? "0.15"
  
negative.code: let
    sources = {
      "0.15" = {
        version = "0.15.34";
        sha256_alpha = "9ae0de043baf70a1e008c0859b16a859d165fe33951f20c8bf7c5500369f115e";
        sha256_headless = "e0d2a79dfa587d8d01ec514d4e6ed7ae9f353a47c49a2a471bd34489280327d4";
      };
    };
    source = sources."${channel}";
  