let pkgs = import {}; in pkgs.mkShell { buildInputs = with pkgs; [ (haskellPackages.ghcWithPackages (hpkgs: with hpkgs; [ hpkgs.servant-server hpkgs.aeson hpkgs.resource-pool hpkgs.sqlite-simple hpkgs.warp hpkgs.persistent hpkgs.persistent-sqlite hpkgs.persistent-template ])) ]; }