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  • b

    bulky-motorcycle-41302

    09/11/2017, 11:28 PM
    actually, I take that back. There already is a 
    python3.6
    on $PATH
  • b

    bulky-motorcycle-41302

    09/11/2017, 11:29 PM
    what does it use for $PATH?
  • b

    bulky-motorcycle-41302

    09/11/2017, 11:29 PM
    I have python and python3 both at /usr/local/bin and that's on $PATH
  • r

    rough-minister-58256

    09/11/2017, 11:29 PM
    try a 
    ./pants clean-all
    (to clear interpreter cache) and then 
    ./pants -ldebug ...
    which should reveal some interpreter search logging
  • b

    bulky-motorcycle-41302

    09/11/2017, 11:30 PM
    okay, will do
  • b

    bulky-motorcycle-41302

    09/11/2017, 11:32 PM
    Okay, Here's the relevant output from the run:
  • b

    bulky-motorcycle-41302

    09/11/2017, 11:32 PM
    Copy code
    16:30:42 00:02   [pyprep]
16:30:42 00:02     [interpreter]
                   pants_backend_python_tasks2_select_interpreter_SelectInterpreter will read from local artifact cache at /Users/cris.ewing/experiments/pants/.cache/pants_backend_python_tasks2_select_interpreter_SelectInterpreter
16:30:42 00:02       [cache]
                   No cached artifacts for 2 targets.
                   Invalidated 2 targets.
                       installed /Users/cris.ewing/experiments/pants/.pants.d/python-setup/interpreters/CPython-2.7.10.tmp.b75fcb61e62146d2bde61c8503efaf65/setuptools-30.0.0-py2.7.egg
                       installed /Users/cris.ewing/experiments/pants/.pants.d/python-setup/interpreters/CPython-2.7.10.tmp.b75fcb61e62146d2bde61c8503efaf65/wheel-0.29.0-py2.7.egg
                       installed /Users/cris.ewing/experiments/pants/.pants.d/python-setup/interpreters/CPython-2.7.10/setuptools-30.0.0-py2.7.egg
                       installed /Users/cris.ewing/experiments/pants/.pants.d/python-setup/interpreters/CPython-2.7.10/wheel-0.29.0-py2.7.egg
                       installed /Users/cris.ewing/experiments/pants/.pants.d/python-setup/interpreters/CPython-2.7.13.tmp.a51e6e233210423da050d3fdd6819421/setuptools-30.0.0-py2.7.egg
                       installed /Users/cris.ewing/experiments/pants/.pants.d/python-setup/interpreters/CPython-2.7.13/setuptools-30.0.0-py2.7.egg
                       installed /Users/cris.ewing/experiments/pants/.pants.d/python-setup/interpreters/CPython-2.7.13/wheel-0.29.0-py2.7.egg
FAILURE: Unable to detect a suitable interpreter for compatibilities: CPython>=3.6 (Conflicting targets: packages/ackermann/tests/python:tests_py3, packages/ackermann/src/python:ackermann)
  • b

    bulky-motorcycle-41302

    09/11/2017, 11:33 PM
    It looks to me like it only tries to install Python 2.7 instead of searching path for any available interpreters.
  • r

    rough-minister-58256

    09/11/2017, 11:35 PM
    pants_backend_python_tasks2_select_interpreter_SelectInterpreter will read from local artifact cache at /Users/cris.ewing/experiments/pants/.cache/pants_backend_python_tasks2_select_interpreter_SelectInterpreter
  • r

    rough-minister-58256

    09/11/2017, 11:35 PM
    hrm, maybe try nuking your 
    ~/.cache
    dir?
  • b

    bulky-motorcycle-41302

    09/11/2017, 11:36 PM
    huh, so the clean-all did not do so. Okay
  • b

    bulky-motorcycle-41302

    09/11/2017, 11:36 PM
    I'll try that!
  • b

    bulky-motorcycle-41302

    09/11/2017, 11:38 PM
    well, that got different results
  • b

    bulky-motorcycle-41302

    09/11/2017, 11:39 PM
    it finds both a python 2.7.10 and a python 2.7.13
  • b

    bulky-motorcycle-41302

    09/11/2017, 11:39 PM
    but in neither case is it looking in /usr/local/bin
  • b

    bulky-motorcycle-41302

    09/11/2017, 11:39 PM
    I see this:
  • b

    bulky-motorcycle-41302

    09/11/2017, 11:39 PM
    Copy code
    16:37:21 00:01   [pyprep]
16:37:21 00:01     [interpreter]
                   pants_backend_python_tasks2_select_interpreter_SelectInterpreter will read from local artifact cache at /Users/cris.ewing/experiments/pants/.cache/pants_backend_python_tasks2_select_interpreter_SelectInterpreter
16:37:21 00:01       [cache]
                   No cached artifacts for 2 targets.
                   Invalidated 2 targets.
                   Detected interpreter /usr/bin/python: CPython-2.7.10
                   Detected interpreter /usr/local/Cellar/python/2.7.13/Frameworks/Python.framework/Versions/2.7/bin/python2.7: CPython-2.7.13
  • r

    rough-minister-58256

    09/11/2017, 11:39 PM
    hrm, I repro that as well
  • b

    bulky-motorcycle-41302

    09/11/2017, 11:39 PM
    the former is the system python
  • b

    bulky-motorcycle-41302

    09/11/2017, 11:40 PM
    the later is a brew-installed python 2.7 interpreter
  • r

    rough-minister-58256

    09/11/2017, 11:40 PM
    seems broken - would file a github issue
  • r

    rough-minister-58256

    09/11/2017, 11:41 PM
    I have a python3.6 on my $PATH and it also only finds my local 2.7 interpreters
  • b

    bulky-motorcycle-41302

    09/11/2017, 11:41 PM
    glad I'm not alone !
  • b

    bulky-motorcycle-41302

    09/11/2017, 11:41 PM
    🙂
  • r

    rough-minister-58256

    09/11/2017, 11:41 PM
    seems like a regression afaict
  • b

    bulky-motorcycle-41302

    09/11/2017, 11:42 PM
    Do I need to update my own pants.ini to allow for a Python other than 2.7?
  • r

    rough-minister-58256

    09/11/2017, 11:42 PM
    ah hrm
  • r

    rough-minister-58256

    09/11/2017, 11:43 PM
    aha
  • r

    rough-minister-58256

    09/11/2017, 11:44 PM
    yeah, if you loosen 
    interpreter_constraints
    in pants’ repo’s 
    pants.ini
    it will find them
  • r

    rough-minister-58256

    09/11/2017, 11:45 PM
    so the interpreter search is pre-constrained by the global constraint
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