{ fetchFromGitHub }:

fetchFromGitHub {
  owner = "PMunch";
  repo = "jsonschema";
  rev = "7b41c03e3e1a487d5a8f6b940ca8e764dc2cbabf";
  sha256 = "1js64jqd854yjladxvnylij4rsz7212k31ks541pqrdzm6hpblbz";
}