anchor.diff:  
         In addition to standard package management features, Guix supports
         transactional upgrades and roll-backs, unprivileged package management,
  -      per-user profiles, and garbage collection. 
  +      per-user profiles, and garbage collection.
   
         It provides Guile Scheme APIs, including high-level embedded
         domain-specific languages (EDSLs), to describe how packages are built
  
positive.code:     # Copy the bootstrap Guile tarballs like Guix's makefile normally does.
      '' cp -v "${boot_guile.i686}" gnu/packages/bootstrap/i686-linux/guile-2.0.7.tar.xz
         cp -v "${boot_guile.x86_64}" gnu/packages/bootstrap/x86_64-linux/guile-2.0.7.tar.xz
      '';
  
    preCheck =
      # XXX: Skip this test (see commit 91fe0e20c7da2b706a1ac0e7b75235b6c1e6ed0a).
      '' sed -i tests/guix-package.sh -e's/guix package --version/exit 0/'
      '';
  
    nativeBuildInputs = [ pkgconfig ];
  
negative.code:     license = "GPLv3+";
  
      maintainers = [ stdenv.lib.maintainers.ludo ];
      platforms = stdenv.lib.platforms.linux;
  
      homepage = http://www.gnu.org/software/guix;
    };
  