anchor.diff:      buildInputs = [ imagemagick which ];
     };
   
  +  rpam2 = attrs: {
  +    buildInputs = [ linux-pam ];
  +  };
  +
     ruby-libvirt = attrs: {
       buildInputs = [ libvirt pkgconfig ];
       buildFlags = [
  
positive.code: , cmake, libssh2, openssl, mysql, darwin, git, perl, pcre, gecode_3, curl
  , msgpack, qt59, libsodium, snappy, libossp_uuid, lxc, libpcap, xorg, gtk2, buildRubyGem
  , cairo, re2, rake, gobject-introspection, gdk_pixbuf, zeromq, czmq, graphicsmagick, libcxx
  , file, libvirt, glib, vips, taglib, libopus
  , libselinux ? null, libsepol ? null
  }@args:
  
  
negative.code:     buildInputs = [ which icu zlib ];
    };
  
    cld3 = attrs: {
      nativeBuildInputs = [ pkgconfig ];
      buildInputs = [ protobuf ];
    };
  
    curb = attrs: {
      buildInputs = [ curl ];
    };
  