anchor.diff:        modules into a coherent library.  Think "a down-scaled, limited-scope CPAN
         for Guile".
       '';
  -    homepage = "https://www.nongnu.org/guile-lib/";
       license = licenses.gpl3Plus;
       maintainers = with maintainers; [ vyp ];
       platforms = platforms.gnu ++ platforms.linux;
  
positive.code: { lib, stdenv, fetchurl, guile, texinfo, pkg-config }:
  
  assert stdenv ? cc && stdenv.cc.isGNU;
  
  let
    name = "guile-lib-${version}";
    version = "0.2.6.1";
  in stdenv.mkDerivation {
    inherit name;
  
    src = fetchurl {
      url = "mirror://savannah/guile-lib/${name}.tar.gz";
      sha256 = "0aizxdif5dpch9cvs8zz5g8ds5s4xhfnwza2il5ji7fv2h7ks7bd";
    };
  
    nativeBuildInputs = [ pkg-config ];
    buildInputs = [ guile texinfo ];
  
    doCheck = true;
  
  
negative.code:   '';
  
    meta = with lib; {
      homepage = "https://www.nongnu.org/guile-lib/";
      description = "A collection of useful Guile Scheme modules";
      longDescription = ''
        guile-lib is intended as an accumulation place for pure-scheme Guile
  