[Python] Linking pyenv python to homebrew in order to avoid homebrew python@3.8 installation

Some packages from brew require python@3.8 as a dependency. For example:

$ brew deps vim
gdbm
gettext
libyaml
lua
openssl@1.1
perl
python@3.8
readline
ruby
sqlite
xz


However, I want to manage all my python installations with pyenv and I would not like to download python@3.8 with brew. This would imply having to exactly same versions of python installed in 2 different locations, which I would like to avoid. Reading up on brew, pyenv and python I´ve come to understand that having python installed in different parts of the system may cause some trouble in the future, which I'd also like to avoid. Unfortunately I cannot seem to resolve the python dependency in brew packages through pyenv. Below follow the steps I've tried to overcome this.

I have installed pyenv with brew, and necessary python versions from there.

$ pyenv versions
system
* 3.8.2 (set by PYENV_VERSION environment variable)


I have tried solving this according to this Github discussion by setting a brew alias such as:

alias brew='env PATH=${PATH//$(pyenv root)\/shims:/} brew'


As that did not resolve the dependency issue, I tried create a link for python@3.8 in /usr/local/Cellar which would point to the pyenv python, somehow similar to this issue with:

ln -s ~/.pyenv/versions/3.8.2 $(brew --cellar python)@3.8


This did not work, so I have also tried adding the link to ´/usr/local/bin´:

ln -s ~/.pyenv/versions/3.8.2 /usr/local/bin/python@3.8


However, running brew info vim still shows that the python@3.8 dependency is not satisfied.

$ brew info vim
vim: stable 8.2.0900 (bottled), HEAD
Vi 'workalike' with many additional features
https://www.vim.org/
Conflicts with:
ex-vi (because vim and ex-vi both install bin/ex and bin/view)
macvim (because vim and macvim both install vi* binaries)
Not installed
From: https://github.com/Homebrew/homebrew-core/blob/master/Formula/vim.rb
==> Dependencies
Required: gettext ✘, lua ✘, perl ✘, python@3.8 ✘, ruby ✘


Any ideas how can I link/connect my pyenv python installation to homebrew so that the additional python@3.8 is not installed? Or maybe solve the issue in another manner using pyenv global/local/shell? I am currently using macOs Catalina.

Any help is greatly appreciated!

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