NIXPKG1 http://releases.strategoxt.org/pgen-with-aterm64/pgen-2.8.1pre27746-pcqscjac/MANIFEST pgen-2.8.1pre27746 x86_64-linux /nix/store/acxzwsnj340lmp10hyq121dvkq1vyck9-pgen.drv /nix/store/yws9b9idkpij8p6q24wxcz4gx8wnh89j-pgen