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