```
{ pkgs, ... }:

{

  environment.systemPackages = with pkgs;
    [
      (st.overrideAttrs (oldAttrs: rec {
        src = fetchFromGitHub {
          owner = "LukeSmithxyz";
          repo = "st";
          rev = "03fe8634cd3f2f3cbd1679be84b465d63caafa3c";
          sha256 = "";
        };
      }))
    ];

}

```