gistfile1.txt

nix-build
error: cannot auto-call a function that has an argument without a default value (‘mkDerivation’)

gistfile2.nix

{ mkDerivation, aeson, base, bytestring, conduit, containers
, directory, esqueleto, file-embed, filepath, hlint, hslogger
, hspec, hspec-wai, http-conduit, irc, iso8601-time, lucid
, MissingH, mtl, network, optparse-applicative, persistent
, persistent-sqlite, persistent-template, QuickCheck
, quickcheck-instances, scotty, silently, stdenv, stm, text, time
, transformers, uuid, wai, wai-extra, wai-middleware-static
, wai-websockets, warp, websockets
}:
mkDerivation {
  pname = "talklibre";
  version = "0.1.0.0";
  src = ./.;
  isLibrary = false;
  isExecutable = true;
  buildDepends = [
    aeson base bytestring conduit containers directory esqueleto
    file-embed filepath hslogger http-conduit irc iso8601-time lucid
    MissingH mtl network optparse-applicative persistent
    persistent-sqlite persistent-template scotty silently stm text time
    transformers uuid wai wai-middleware-static wai-websockets warp
    websockets
  ];
  testDepends = [
    aeson base bytestring conduit containers directory esqueleto
    file-embed filepath hlint hslogger hspec hspec-wai http-conduit irc
    iso8601-time lucid MissingH mtl network optparse-applicative
    persistent persistent-sqlite persistent-template QuickCheck
    quickcheck-instances scotty silently stm text time transformers
    uuid wai wai-extra wai-middleware-static wai-websockets warp
    websockets
  ];
  homepage = "https://github.com/talklibre/talklibre";
  description = "The Talklibre instant messaging application";
  license = stdenv.lib.licenses.publicDomain;
}