args @ { fetchurl, ... }:
rec {
  baseName = ''trivial-mimes'';
  version = ''20160929-git'';

  description = ''Tiny library to detect mime types in files.'';

  deps = [ ];

  src = fetchurl {
    url = ''http://beta.quicklisp.org/archive/trivial-mimes/2016-09-29/trivial-mimes-20160929-git.tgz'';
    sha256 = ''1sdsplngi3civv9wjd9rxxj3ynqc3260cfykpid5lpy8rhbyiw0w'';
  };

  overrides = x: {
    postInstall = ''
        echo "$CL_SOURCE_REGISTRY"
        NIX_LISP_PRELAUNCH_HOOK='nix_lisp_run_single_form "(asdf:load-system :trivial-mimes)"' "$out/bin/trivial-mimes-lisp-launcher.sh" ""
    '';
  };
}