anchor.diff:      homepage = "https://sourceforge.net/p/bibutils/home/Bibutils/";
       license = licenses.gpl2;
       maintainers = [ maintainers.garrison ];
  -    platforms = platforms.linux;
  +    platforms = platforms.unix;
     };
   }
  
positive.code:     sha256 = "15p4av74ihsg03j854dkdqihpspwnp58p9g1lhx48w8kz91c0ml6";
    };
  
    configureFlags = [
      (if static then "--static" else "--dynamic")
      "--install-dir" "$(out)/bin"
  
negative.code: 
    doCheck = true;
    checkTarget = "test";
    preCheck = lib.optionalString stdenv.isDarwin ''
      export DYLD_LIBRARY_PATH=`pwd`/lib
    '';
  
    meta = with lib; {
      description = "Bibliography format interconversion";
  