setup: use modern bcrypt implementation instead of unsupported old one py-bcrypt has been deprecated by bcrypt, and is no longer developed or supported. bcrypt requires bytestrings instead of strings, use safe_str to ensure they're encoded before they're passed to bcrypt. Also, use check_pw to minimise the number of manual conversions and comparisons. Installation of bcrypt will probably compile a C extension and require libffi-dev.

[tox]
minversion = 1.8
envlist = py{26,27}-pytest

[testenv]
setenv =
    PYTHONHASHSEED = 0
deps =
    pytest: pytest
    python-ldap
    python-pam
commands =
    pytest: py.test {posargs}