How to add Python installed via Homebrew to pyenv versions

Hello, friends!

As I have mentioned before, I am using pyenv to manage multiple Python installations, but since I installed some Hombrew formulae that depend on python@3.9 I decided to uninstall Python 3 installed via pyenv and use the one from Homebrew.

So here I will share a quick guide on how I accomplished that.

If you’ve installed the latest Python 3.9 version via pyenv, uninstall it by running uninstall and then rehash
```
 pyenv uninstall 3.9.X
 pyenv rehash
```

Create a symlink at ~/.pyenv/versions

 $ cd ~/.pyenv/versions
 $ ln -sfv "$(brew --prefix python@3.9)" 3.9
 $ ls -al
 total 0
 drwxr-xr-x  4 cesarcoatl  staff  128 Aug 31 07:51 .
 drwxr-xr-x  6 cesarcoatl  staff  192 Jun  8 10:58 ..
 drwxr-xr-x  6 cesarcoatl  staff  192 Aug 31 07:48 2.7.18
 lrwxr-xr-x  1 cesarcoatl  staff   25 Aug 31 07:51 3.9 -> /usr/local/opt/python@3.9

If you wish to also include the include directory, run the following

 $ cd "$(brew --prefix python@3.9)"
 $ ln -sfv Frameworks/Python.framework/Versions/3.9/include/python3.9 include
 include -> Frameworks/Python.framework/Versions/3.9/include/python3.9
 $ ls -al
 total 64
 drwxr-xr-x  14 cesarcoatl  staff    448 Aug 31 07:43 .
 drwxr-xr-x   3 cesarcoatl  staff     96 Jul  3 09:36 ..
 drwxr-xr-x   3 cesarcoatl  staff     96 Jun 28 01:57 .brew
 drwxr-xr-x   3 cesarcoatl  staff     96 Jun 28 01:57 Frameworks
 drwxr-xr-x   3 cesarcoatl  staff     96 Jun 28 01:57 IDLE 3.app
 -rw-r--r--   1 cesarcoatl  staff   3770 Jul  3 09:36 INSTALL_RECEIPT.json
 -rw-r--r--   1 cesarcoatl  staff  13925 Jun 28 01:57 LICENSE
 drwxr-xr-x   3 cesarcoatl  staff     96 Jun 28 01:57 Python Launcher 3.app
 -rw-r--r--   1 cesarcoatl  staff  10140 Jun 28 01:57 README.rst
 drwxr-xr-x  19 cesarcoatl  staff    608 Aug 31 07:50 bin
 lrwxr-xr-x   1 cesarcoatl  staff     58 Aug 31 07:43 include -> Frameworks/Python.framework/Versions/3.9/include/python3.9
 drwxr-xr-x   3 cesarcoatl  staff     96 Jun 28 01:57 lib
 drwxr-xr-x   4 cesarcoatl  staff    128 Jun 28 01:57 libexec
 drwxr-xr-x   3 cesarcoatl  staff     96 Jun 28 01:57 share

Create symlinks for idle, pip, python and wheel at the following location:

 $ cd "$(brew --prefix python@3.9)/bin"
 $ ln -sfv idle3 idle
 idle -> idle3
 $ ln -sfv pip3 pip 
 pip -> pip3
 $ ln -sfv python3 python
 python -> python3
 $ ln -sfv wheel3 wheel
 wheel -> wheel3

Once that’s done, run pyenv rehash as recommended by pyenv whenever you install new versions
```
 pyenv rehash
```
Now, you’re ready to verify all versions managed by pyenv, and select a global, local, or shell version
```
 $ pyenv versions
 * system (set by /Users/cesarcoatl/.pyenv/version)
   2.7.18
   3.9
```
If you want to set 3.9 as global, just run by running
```
 pyenv global 3.9
```

Verify your selection by running

 $ pyenv versions
   system
   2.7.18
 * 3.9 (set by /Users/cesarcoatl/.pyenv/version)

And now when I run python --version I get the following output:
```
 $ python --version
 Python 3.9.6
```

And that’s it! You’ve done it!

Thanks for reading and happy coding!