`test.test_uuid.test_find_mac` relies on `ifconfig` binary presence, which is on its way out. This makes the test fail on more and more Linux installations. Using `env` (for example) is more reliable. `ip` could also be used since it's the replacement to `ifconfig`, but an always-present binary such as `env` makes it work in all cases. This is what the (trivial) patch does. The same reasoning applies to `uuid.getnode`: if 'Unix dll' source is not available it will try to get a MAC address 'ifconfig' which will fail, and the fallback will be `_random_getnode` (but that's another issue).
It would be nice to switch to "ip link". The ip command became the new standard on Linux. I don't know if the ip command is available on other operating systems.
I realize that I was not working against the tip... The patch I offered does not apply since revision 88068, which fixes the test by skipping it when "ifconfig" isn't available. Therefore this issue is invalid. However I think that "test_find_mac" should always should not be skipped but use any other binary instead. (Context: I'm trying to start contributing by fixing tests/'easy' bugs; I should have updated by cpython repo beforehand...)
