Set powerline_pycmd to py3 in python 3 distributions

[s-ol]

When installing python-powerline-git on Arch, opening vim produces an error message by default that needs to be skipped every time. By adding let g:pymcd_powerline="py3" to the .vimrc this can be fixed for a single user, and by adding that line atop /usr/share/vim/vimfiles/plugin/powerline.vim it can be done system-wide.

Because the python3 and python2 packages conflict each other, I think the py3 PKGBUILDs should add that setting on their own, since python2 seems to be the default.

Or the vim loading mechanism should try both before failing

[acch]

I'm having this exact same problem with powerline-vim on Arch.

For a workaround, adding the line let g:powerline_pycmd = 'py3' to /etc/vimrc to fix this issue for all users (including root) is less instrusive than poking with the plugin directly.

[patrick-motard]

Had the same issue. @acch 's solution fixed it for me. Now to figure out why my icons are clipping in the powerline bar.

[banzr]

@acch fixed my problem as well. +1