anchor.diff:      Foundation
       CoreGraphics
       Cocoa
  +    libiconv
     ];
     pname = "wezterm";
   in
   
   rustPlatform.buildRustPackage {
     inherit pname;
  -  version = "unstable-2020-11-22";
  +  version = "20210314";
   
     src = fetchFromGitHub {
       owner = "wez";
       repo = pname;
  -    rev = "3bd8d8c84591f4d015ff9a47ddb478e55c231fda";
  -    sha256 = "13xf3685kir4p159hsxrqkj9p2lwgfp0n13h9zadslrd44l8b8j8";
  +    rev = "20210314-114017-04b7cedd";
  +    sha256 = "sha256-EwoJLwOgoXtTEBbf/4pM+pCCG8fGkVruHVYh2HivCd0=";
       fetchSubmodules = true;
     };
  -  cargoSha256 = "1ghjpyd3f5dqi6bblr6d2lihdschpyj5djfd1600hvb41x75lmhx";
  +  cargoSha256 = "sha256-OHbWgnlul9VfbPcMdzbuRJG59+myiukkzmnWohj5v2k=";
   
     nativeBuildInputs = [
       pkg-config
  
positive.code:     libX11
      xcbutil
      libxcb
      xcbutilkeysyms
      xcbutilwm
      libxkbcommon
  
negative.code: , CoreGraphics
  , Cocoa
  , Foundation
  , libiconv
  
  , dbus
  , libX11
  , xcbutil
  , libxcb
  , xcbutilimage
  , xcbutilkeysyms
  , xcbutilwm # contains xcb-ewmh among others
  , libxkbcommon
  