nixpkgs/pkgs/misc/vim-plugins/vim2nix/additional-nix-code/vim-xkbswitch

    patchPhase = ''
      substituteInPlace plugin/xkbswitch.vim \
              --replace /usr/local/lib/libxkbswitch.so ${xkb_switch}/lib/libxkbswitch.so
    '';
    buildInputs = [ xkb_switch ];