yoyo.nix

with import <nixpkgs> {};
(let
  yoyo-migrations = with python27.pkgs; buildPythonPackage  rec {
    pname = "yoyo-migrations";
    version = "5.0.1";
    src = fetchPypi {
      inherit pname version;
      sha256 = "d458f78443b1db57eda423e86fe8b245561340a394da5dc83f40d6d1ae4237a4";
    };
    doCheck = false;
    checkInputs = [ iniherit ];
  };

  iniherit = with python27.pkgs; buildPythonPackage  rec {
    pname = "iniherit";
    version = "0.3.5";
    src = fetchPypi {
      inherit pname version;
      sha256 = "4fcf873ab7f575a0adef358277bad6fef7a5c562f03775be6d384a2110eb0912";
    };
    checkInputs = [ six ];
    doCheck = false;
  };

in python27.withPackages (ps: with ps; [ psycopg2 yoyo-migrations iniherit ])
).env