Re: [PATCH v1 6/6] travis: install homebrew python for OS X

["Philippe Mathieu-Daudé" <philmd@redhat.com>]

On 1/8/20 8:00 AM, Alex Bennée wrote:
> Philippe Mathieu-Daudé <philmd@redhat.com> writes:
>> On 1/7/20 2:53 PM, Alex Bennée wrote:
>>> Our python3 requirements now outstrip those of the build.
>>> Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
>>> ---
>>>    .travis.yml | 1 +
>>>    1 file changed, 1 insertion(+)
>>> diff --git a/.travis.yml b/.travis.yml
>>> index 848a2714efe..a86ca34f79d 100644
>>> --- a/.travis.yml
>>> +++ b/.travis.yml
>>> @@ -57,6 +57,7 @@ addons:
>>>          - glib
>>>          - pixman
>>>          - gnu-sed
>>> +      - python
>>>        update: true
>>>    
>>
>> This doesn't seem enough, I'm getting:
>>
>> ./configure --disable-docs --disable-tools
>> ERROR: Cannot use '/usr/local/bin/python', Python >= 3.5 is required.
>>
>>         Use --python=/path/to/python to specify a supported Python.
>>
>> Apparently we don't set this in PATH ourselves.
> 
> It looks like brew fell over:
> 
>    ==> Downloading https://homebrew.bintray.com/bottles/python-3.7.6_1.mojave.bottl
> 
>    ==> Downloading from https://akamai.bintray.com/64/643d627c2b4fc03a3286c397d2992
> 
>    ######################################################################## 100.0%
> 
>    ==> Pouring python-3.7.6_1.mojave.bottle.tar.gz
> 
>    Error: The `brew link` step did not complete successfully
> 
>    The formula built, but is not symlinked into /usr/local
> 
>    Could not symlink Frameworks/Python.framework/Headers
> 
>    Target /usr/local/Frameworks/Python.framework/Headers
> 
>    is a symlink belonging to python@2. You can unlink it:
> 
>      brew unlink python@2
> 
>    To force the link and overwrite all conflicting files:
> 
>      brew link --overwrite python
> 
>    To list all files that would be deleted:
> 
>      brew link --overwrite --dry-run python
> 
>    Possible conflicting files are:
> 
>    /usr/local/Frameworks/Python.framework/Headers -> /usr/local/Cellar/python@2/2.7.17/Frameworks/Python.framework/Headers
> 
>    /usr/local/Frameworks/Python.framework/Python -> /usr/local/Cellar/python@2/2.7.17/Frameworks/Python.framework/Python
> 
>    /usr/local/Frameworks/Python.framework/Resources -> /usr/local/Cellar/python@2/2.7.17/Frameworks/Python.framework/Resources
> 
>    /usr/local/Frameworks/Python.framework/Versions/Current -> /usr/local/Cellar/python@2/2.7.17/Frameworks/Python.framework/Versions/Current
> 
>    ==> /usr/local/Cellar/python/3.7.6_1/bin/python3 -s setup.py --no-user-cfg insta
> 
>    ==> /usr/local/Cellar/python/3.7.6_1/bin/python3 -s setup.py --no-user-cfg insta
> 
>    ==> /usr/local/Cellar/python/3.7.6_1/bin/python3 -s setup.py --no-user-cfg insta
> 
>    ==> Caveats
> 
>    Python has been installed as
> 
>      /usr/local/bin/python3

Based on this I tried:

-- >8 --
  before_script:
-  - if [ "$TRAVIS_OS_NAME" == "osx" ] ; then export 
PATH="/usr/local/opt/ccache/libexec:$PATH" ; fi
+  - if [ "$TRAVIS_OS_NAME" == "osx" ] ; then export 
PATH="/usr/local/opt/ccache/libexec:$PATH" BASE_CONFIG="$BASE_CONFIG 
--python=/usr/local/bin/python3"; fi
    - if command -v ccache ; then ccache --zero-stats ; fi
    - mkdir -p ${BUILD_DIR} && cd ${BUILD_DIR}
    - ${SRC_DIR}/configure ${BASE_CONFIG} ${CONFIG} || { cat config.log 
&& exit 1; }
---

Still:

../configure: line 1845: /usr/local/bin/python3: No such file or directory

ERROR: Cannot use '/usr/local/bin/python3', Python >= 3.5 is required.

        Use --python=/path/to/python to specify a supported Python.

> 
>    Unversioned symlinks `python`, `python-config`, `pip` etc. pointing to
> 
>    `python3`, `python3-config`, `pip3` etc., respectively, have been installed into
> 
>      /usr/local/opt/python/libexec/bin
> 
>    If you need Homebrew's Python 2.7 run
> 
>      brew install python@2
> 
>    You can install Python packages with
> 
>      pip3 install <package>
> 
>    They will install into the site-package directory
> 
>      /usr/local/lib/python3.7/site-packages
> 
>    See: https://docs.brew.sh/Homebrew-and-Python
> 
>    ==> Summary
> 
>    🍺  /usr/local/Cellar/python/3.7.6_1: 3,977 files, 60.8MB
>