Python 3.6.0 upgrade breaks existing qgis3-dev about homebrew-qgisdev

[m-kuhn]

You may see issues with other formulae, since there appears to be an issue with def install always setting PYTHONPATH=<2.7 site-packages> and PYTHONHOME=, though I have not pinned down the problem.

Hi @dakcarto , do you have any workaround for this?

[dakcarto]

@m-kuhn wrote:

Hi @dakcarto , do you have any workaround for this?

Only what I have done for qgis3-dev.

[m-kuhn]

Only what I have done for qgis3-dev.

Seems that works. While it still spits a warning about future from 2.7 being loaded before the python path mangling in install, the build finally completes 👍 .

[dalekunce]

I've tried the suggestions above. brew info looks like all deps are installed but I'm getting the following error.

[dakcarto]

Ok, figured it out. When gdal2-python.rb is loaded, :python => :recommended is the default, which sets PYTHONPATH=<homebrew/prefix>/lib/python2.7/site-packages in the environ. This needs cleared prior to calling any of the qgis3-dev python3 functions.

Should be 'fixed' in d3e61f0. I do not think this is specific to gdal2-python formula, but any that defines :python2 or 'python' as a hard dependency or :recommended. I am unsure if this is a Homebrew bug (seems like it to me).