tests: mark test-check-pyflakes.t as requiring hg1.0+ hg does not yet run with py3, so if you try: ./run-tests.py --local test-check-pyflakes.t ... it will try to run the local hg, which does not work and thus, hg locate will return no output to stdout (and stderr is sent to /dev/null). If you do: ./run-tests.py --with-hg=~/bin/hg test-check-pyflakes.t Then it should work, if your hg is new enough to have a locate command (hg0.6 does not have locate).

#require test-repo pyflakes hg10

  $ cd "`dirname "$TESTDIR"`"

run pyflakes on all tracked files ending in .py or without a file ending
(skipping binary file random-seed)

  $ hg locate 'set:**.py or grep("^!#.*python")' 2>/dev/null \
  > | xargs pyflakes 2>/dev/null | "$TESTDIR/filterpyflakes.py"
  tests/filterpyflakes.py:61: undefined name 'undefinedname'