{ sources ? import ../nix/sources.nix }: (self: super: let pkgs = self; in { haskell = super.haskell // { packageOverrides = pkgs.lib.composeManyExtensions [ super.haskell.packageOverrides (self: super: { acms = self.callCabal2nix "acms" ../acms { }; astore = self.callCabal2nix "astore" sources.json2sql { }; autotypes = self.callCabal2nix "autotypes" ../autotypes { }; frontend = self.callCabal2nix "frontend" ../frontend { }; sh = pkgs.haskell.lib.dontCheck (self.callCabal2nix "sh" sources.sh { }); websockets = pkgs.haskell.lib.doJailbreak super.websockets; }) ]; }; })