self: super: {
  # linuxPackages = super.linuxPackages.extend (lpself: lpsuper: {
  #   openrazer = super.linuxPackages.openrazer.overrideAttrs (old: {

  #   });
  # });

  openrazer-daemon = super.openrazer-daemon.overrideAttrs (old: {
    version = "master";
    src = super.fetchFromGitHub {
      owner = "openrazer";
      repo = "openrazer";
      rev = "master";
      hash = "sha256-F7lAWM/14texc1PVhch5R2oztcfkoub/9oGdjEmtTZ8=";
    };
  });

  development.python-modules.openrazer = super.development.python-modules.openrazer.overrideAttrs (old: {
    version = "master";
    src = super.fetchFromGitHub {
      owner = "openrazer";
      repo = "openrazer";
      rev = "master";
      hash = "sha256-F7lAWM/14texc1PVhch5R2oztcfkoub/9oGdjEmtTZ8=";
    };
  });
}