hackage2nix: add old hpack version to make stack-1.6.1 happy

This commit is contained in:
Peter Simons 2017-12-11 14:11:07 +01:00
parent 3ddc73a5d1
commit 75cc0ff85f

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@ -2540,6 +2540,7 @@ extra-packages:
- happy <1.19.6 # newer versions break Agda
- haskell-gi-overloading == 0.0 # gi-* packages use this dependency to disable overloading support
- haskell-src-exts == 1.19.* # required by hindent and structured-haskell-mode
- hpack == 0.20.* # required by stack-1.6.1
- language-c == 0.7.0 # required by c2hs hack to work around https://github.com/haskell/c2hs/issues/192.
- mtl < 2.2 # newer versions require transformers > 0.4.x, which we cannot provide in GHC 7.8.x
- mtl-prelude < 2 # required for to build postgrest on mtl 2.1.x platforms