zzbot 712c417529 Auto merge of #2787 - micbou:improve-path-to-python-interpreter, r=puremourning ... [READY] Improve path to python interpreter error handling YCM returns the cryptic error `YouCompleteMe unavailable: [Errno 2] No such file or directory` when the Python interpreter path used to start the server doesn't exist. See issues https://github.com/Valloric/YouCompleteMe/issues/2773 and https://github.com/Valloric/YouCompleteMe/issues/2775. This PR improves that by using the `FindExecutable` and `GetExecutable` functions from ycmd to check if the Python interpreter path exists (and is an executable) and by returning a much more helpful message if it doesn't. We use `FindExecutable` instead of `GetExecutable` on the `g:ycm_server_python_interpreter` option so that the user can specify a Python path with just the executable name (e.g. `python`, `python2`, `python3`). This also fixes a Python traceback in Vim that occurs when, after successfully starting the server, the `g:ycm_server_python_interpreter` option is set to an invalid path and the server is restarted with `:YcmRestartServer`. Steps to reproduce are: - start Vim with a working YCM; - type `:let g:ycm_server_python_interpreter = '/invalid/python/path'`; - type `:YcmRestartServer`. <!-- Reviewable:start --> --- This change is [<img src="https://reviewable.io/review_button.svg" height="34" align="absmiddle" alt="Reviewable"/>](https://reviewable.io/reviews/valloric/youcompleteme/2787) <!-- Reviewable:end -->		2017-09-21 14:07:27 -07:00
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ycm	Auto merge of #2787 - micbou:improve-path-to-python-interpreter, r=puremourning	2017-09-21 14:07:27 -07:00
test_requirements.txt	Require coverage.py older than 4.4	2017-06-04 16:42:54 +02:00