this will run every test regardless of if there were any previous failures

pytest --lfnf=none

i have to pass both arguments for it to work:

pytest --lf --lfnf=none

i'm not sure if this is intended functionality for whatever reason, but if it is, it should be documented in the --help description. the current documentation seems a bit unclear:

  --lfnf={all,none}, --last-failed-no-failures={all,none}
                        Which tests to run with no previously (known) failures