Enable hpack without test suite, and cabal2nix #4339
Enable hpack without test suite, and cabal2nix #4339

iand675/stackage,wereHamster/stackage,michalkonecny/stackage,ethercrow/stackage,massysett/stackage,mrkkrp/stackage,stackbuilders/stackage,mstksg/stackage,simonmichael/stackage,asr/stackage,fpco/stackage,int-index/stackage,athanclark/stackage,jonschoning/stackage,peti/stackage,soenkehahn/stackage,Daniel-Diaz/stackage,spencerjanssen/stackage,clinty/stackage,fimad/stackage