Current PyPi docs  for PyMongoCrypt (0.01b1) state: "PyMongoCrypt can be installed with pip[...]  PyMongoCrypt ships wheels for macOS, Windows, and manylinux2010 that include an embedded libmongocrypt build."

This is not true if pip is < v. 19.x. The default pip version for Ubuntu (and likely other Linux distros) is not 19 (v. 9.x in the case of Ubuntu 18). When an older version of pip is used, the embedded libmongocrypt will not be pulled down, requiring manual installation and setting an environment variable PYMONGOCRYPT_LIB.

Please add a line calling out pip v. 19 as a prerequisite for PyMongoCrypt.

See: PYTHON-1983