By the way here's my powerpc64le-linux-gnu hash: $ sha256sum /gnu/store/cc4sj9kiw1vzhhhxawnqvjjdi4ygbxp5-gcc-stripped-tarball-5.5.0/gcc-stripped-5.5.0-powerpc64le-linux-gnu.tar.xz 153f356a8f58102e7e57a006e836ec7450e69dee120ba83d9f7dacf07162537b /gnu/store/cc4sj9kiw1vzhhhxawnqvjjdi4ygbxp5-gcc-stripped-tarball-5.5.0/gcc-stripped-5.5.0-powerpc64le-linux-gnu.tar.xz