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I use pyenv to manage Python versions in Mac OSX High Sierra, works fine. A new version of an important piece of software for me, QGIS v3, requires that Python 3.6 exist on the system but looks for it only in /Library/Frameworks, which pyenv doesn't use. So the install fails.

My question is, will it blow up my Python environment installing Python outside of pyenv, with the Python.org installer?

Seems risky to try and maybe someone knows...

Joey
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kgeo
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  • Look for documentation on how to install python3 while using python2. It should not mess with environments since the environments idea is to isolate code. – jalazbe Aug 14 '18 at 13:14

2 Answers2

1

There is no need to add an additional standard installation of Python 3.6.x just to run the QGIS 3 installer. This worked for me (adapt version number):

  1. uninstall previously installed Python 3.6.x

    pyenv uninstall 3.6.8

  2. reinstall with framework

    env PYTHON_CONFIGURE_OPTS="--enable-framework" pyenv install 3.6.8

  3. create a symlink

    sudo ln -s $(pyenv root)/versions/3.6.8/Python.framework /Library/Frameworks/Python.framework
stackless
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I do use pyenv at the system level and virtualenv for all development work. The question was specific to QGIS 3, which looks for Python 3.6 in a specific location on the filesystem, under Library/Frameworks and apparently ignores the environment. Bottom line: a 'standard' install of a Python 3 pkg from the Python site did the trick.

kgeo
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