diff --git a/pkgs/development/haskell-modules/configuration-ghc-8.0.x.nix b/pkgs/development/haskell-modules/configuration-ghc-8.0.x.nix index 3f3b5171c00..7a30431fa9e 100644 --- a/pkgs/development/haskell-modules/configuration-ghc-8.0.x.nix +++ b/pkgs/development/haskell-modules/configuration-ghc-8.0.x.nix @@ -113,4 +113,13 @@ self: super: { servant-client = dontCheck (doJailbreak super.servant-client_0_7); servant-server = dontCheck (doJailbreak super.servant-server_0_7); + # The essential part is released in 2.1 upstream (needs hackage import) + singletons = (pkgs.haskell.lib.overrideCabal super.singletons (oldAttrs: { + src = pkgs.fetchgit { + url = https://github.com/goldfirere/singletons.git; + rev = "277fa943e8c260973effb2291672b166bdd951c1"; + sha256 = "1ll9fcgs5nxqihvv5vr2bf9z6ijvn3yyk5ss3cgcfvcd95ayy1wz"; + }; + })); + }