anchor.diff:      url="http://www.ivmaisoft.com/_bin/atomic_ops/libatomic_ops-7.4.2.tar.gz";
       sha256="1pdm0h1y7bgkczr8byg20r6bq15m5072cqm5pny4f9crc9gn3yh4";
     };
  -  
  -  buildInputs = stdenv.lib.optionals stdenv.isCygwin [ autoconf automake libtool ];
  -
   in stdenv.mkDerivation {
     inherit (s) name version;
     inherit buildInputs;
  
positive.code:   src = fetchurl {
      inherit (s) url sha256;
    };
  
    preConfigure = if stdenv.isCygwin then ''
        sed -i -e "/libatomic_ops_gpl_la_SOURCES/a libatomic_ops_gpl_la_LIBADD = libatomic_ops.la" src/Makefile.am
        ./autogen.sh
    '' else null;
  
    meta = {
      inherit (s) version;
  
negative.code: { stdenv, fetchurl }:
  let
    s = # Generated upstream information
    rec {
  