{ nixpkgs ? import {}, compiler ? "ghc8107", doBenchmark ? false }: let inherit (nixpkgs) pkgs; f = { mkDerivation, aeson, base, blaze-html, blaze-markup , bytestring, cassava, conduit, conferer, conferer-aeson , conferer-warp, conferer-yaml, containers, data-default-class , directory, either, extra, fmt, http-api-data, http-media, lens , lib, monad-logger, mtl, path-pieces, persistent , persistent-postgresql, protocol-buffers , protocol-buffers-descriptor, regex-tdfa, resource-pool, servant , servant-docs, servant-server, servant-swagger, servant-websockets , shakespeare, stm, swagger2, text, time, timezone-olson , timezone-series, transformers, unliftio-core, uuid, vector , vector-algorithms, wai-extra, warp, websockets, yesod, yesod-form , zip-archive }: mkDerivation { pname = "tracktrain"; version = "0.1.0.0"; src = ./.; isLibrary = true; isExecutable = true; libraryHaskellDepends = [ aeson base blaze-html blaze-markup bytestring cassava conduit conferer conferer-warp containers either extra fmt http-api-data http-media lens monad-logger mtl path-pieces persistent persistent-postgresql protocol-buffers protocol-buffers-descriptor regex-tdfa resource-pool servant servant-docs servant-server servant-swagger servant-websockets shakespeare stm swagger2 text time timezone-olson timezone-series transformers unliftio-core uuid vector vector-algorithms warp websockets yesod yesod-form zip-archive ]; executableHaskellDepends = [ aeson base bytestring conferer conferer-aeson conferer-yaml data-default-class directory extra fmt monad-logger persistent-postgresql protocol-buffers time wai-extra warp ]; doHaddock = false; description = "tracktrain tracks trains on their traintracks"; license = "unknown"; hydraPlatforms = lib.platforms.none; }; haskellPackages = if compiler == "default" then pkgs.haskellPackages else pkgs.haskell.packages.${compiler}; variant = if doBenchmark then pkgs.haskell.lib.doBenchmark else pkgs.lib.id; drv = variant (haskellPackages.callPackage f {}); in drv