nixpkgs/pkgs/development/lisp-modules/quicklisp-to-nix-output/external-program.nix

args @ { fetchurl, ... }:
rec {
  baseName = ''external-program'';
  version = ''20160825-git'';

  description = '''';

  deps = [ args."trivial-features" ];

  src = fetchurl {
    url = ''http://beta.quicklisp.org/archive/external-program/2016-08-25/external-program-20160825-git.tgz'';
    sha256 = ''0avnnhxxa1wfri9i3m1339nszyp1w2cilycc948nf5awz4mckq13'';
  };

  overrides = x: {
    postInstall = ''
      find "$out/lib/common-lisp/" -name '*.asd' | grep -iv '/external-program[.]asd${"$"}' |
        while read f; do
          CL_SOURCE_REGISTRY= \
          NIX_LISP_PRELAUNCH_HOOK="nix_lisp_run_single_form '(asdf:load-system :$(basename "$f" .asd))'" \
            "$out"/bin/*-lisp-launcher.sh ||
          mv "$f"{,.sibling}; done || true
    '';
  };
}
/* (SYSTEM external-program DESCRIPTION NIL SHA256 0avnnhxxa1wfri9i3m1339nszyp1w2cilycc948nf5awz4mckq13 URL
    http://beta.quicklisp.org/archive/external-program/2016-08-25/external-program-20160825-git.tgz MD5 6902724c4f762a17645c46b0a1d8efde NAME external-program
    TESTNAME NIL FILENAME external-program DEPS ((NAME trivial-features)) DEPENDENCIES (trivial-features) VERSION 20160825-git SIBLINGS NIL) */