see https://github.com/luaposix/luaposix/issues/106 for the reason why we need to inject gnulib.
@ -35,4 +35,4 @@
[P] X -?---5---9 800.000
[D] 4076506241 luaposix-5.1.28.tar.gz !https://github.com/luaposix/luaposix/archive/v5.1.28.tar.gz
[D] 2692547996 luaposix-5.1.28-gnulib-snapshot.tar.bz2 http://localhost
[D] 2692547996 luaposix-5.1.28-gnulib-snapshot.tar.bz2 http://dl.opensde.net/sources/luaposix/