neovim: Use system Python if possible

[tkossak]

• Ran brew update and retried your prior step?
• Ran brew doctor, fixed as many issues as possible and retried your prior step?

Actual behaviour:

I install neovim with brew install neovim/neovim/neovim and it also installs its own python in $HOME/.linuxbrew/bin/python clobbering system /usr/bin/python (because during brew installation PATH was updated with export PATH="$HOME/.linuxbrew/bin:$PATH"). Is there any way to install neovim without clobbering my system python?

$ which python
/home/kossak/.linuxbrew/bin/python

Expected behaviour

$ which python
/usr/bin/python

Steps to reproduce:

brew install neovim/neovim/neovim
which python

Don't know where the bug is so i also posted this on homebrew-neovim

My system specs:

System:    Kernel: 3.19.0-32-generic x86_64 (64 bit gcc: 4.8.2) Desktop: Cinnamon 2.8.8 (Gtk 2.24.23) dm: mdm
           Distro: Linux Mint 17.3 Rosa

Pythons (i moved brew as the last path in $PATH with export PATH="$PATH:$HOME/.linuxbrew/bin"):

$ echo $PATH
/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/home/kossak/.fzf/bin:/home/kossak/.dotfiles/bin:/home/kossak/.dotfiles.local/bin:/home/kossak/.linuxbrew/bin:/home/kossak/.dotfiles/bin:/home/kossak/.dotfiles.local/bin:/home/kossak/.linuxbrew/bin

$ which python python2 python3
/usr/bin/python
/usr/bin/python2
/usr/bin/python3

$ python -V; python2 -V; python3 -V;
Python 2.7.6
Python 2.7.6
Python 3.4.3

$ which pip pip2 pip3
/usr/local/bin/pip
/usr/local/bin/pip2
/usr/local/bin/pip3

$ pip -V; pip2 -V; pip3 -V;
pip 8.1.2 from /usr/local/lib/python3.4/dist-packages (python 3.4)
pip 1.5.4 from /usr/lib/python2.7/dist-packages (python 2.7)
pip 8.1.2 from /usr/local/lib/python3.4/dist-packages (python 3.4)

$ /home/kossak/.linuxbrew/bin/python -V
Python 2.7.11

I installed brew with ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Linuxbrew/install/master/install)"

[sjackman]

As a workaround, try brew unlink python

[sjackman]

neovim should use the system Python when it's available. I'll have to look into why it's installing the Linuxbrew python.

[sjackman]

It should use your system Python so long as it is version 2.7.x. Please report

/usr/bin/python --version

[tkossak]

Somehow it didn't use my Python 2.7.6:

$ /usr/bin/python --version
Python 2.7.6
$ /home/kossak/.linuxbrew/bin/python --version
Python 2.7.11

[sjackman]

I'll see if I can reproduce that issue on my system. Does the workaround work for you?
brew unlink python

[tkossak]

Thank you. I added some of my system info to first post.

[tkossak]

Does the workaround work for you?
brew unlink python

Yes it works (even with linuxbrew path on the begining of $PATH)