{ haskellPackages }: /* XXX: Sproxy2 need some libraries missed in nixpkgs 16.09 */ let myHaskellPkgs = haskellPackages.override { overrides = self: super: { http-client = self.callPackage ./http-client.nix {}; http-client-tls = self.callPackage ./http-client-tls.nix {}; http-conduit = self.callPackage ./http-conduit.nix {}; }; }; in myHaskellPkgs.callPackage ./main.nix { }