stderr:
Failed to resolve requirements from PEX environment @ /tmp/process-executionRnfOYF/lockfile.pex.
Needed manylinux_2_31_x86_64-cp-37-cp37m compatible dependencies for:
 1: importlib-metadata>=0.12; python_version < "3.8"
    Required by:
      pluggy 0.13.1
      pytest 6.2.4
    But this pex had no 'importlib-metadata' distributions.

from https://github.com/pantsbuild/pants/runs/3089689188?check_suite_focus=true. I had added a PyPi package to the lockfile in that PR. Does the lockfile have to be generated with Python 3.7? (I had run it with Python 3.8.)

Yes, it does have to be w/ 3.7 This is an area of very very active development. Pants will soon try generating with all interpreters and warn/error if some aren't available

so we should document that requirement

so we should document that requirement

Perhaps, but this should be fixed in less than a week. This is the main thing CHris and I are working on