python3 roll back to python3.7

roll_back_python3_to_3_7.md

Manually Roll Back Python3 to [email protected]

Begin: brew installed [email protected] was under:

/usr/local/Cellar/python

that brew installed [email protected] has a soft link python under:

/usr/local/opt

The upstairs soft link is to do optionally config choose for other Tools.

e.g: Vim.

Also, Vim installed configuration depends that soft link python.

When brew install package python@2 or python@3, that will download under

/usr/local/Cellar/

And that will create soft link python@2 or python@3 under

/usr/local/bin

This upstairs soft link is to do with terminal command or default package

target.

I've just used brew install shellcheck, and now that installed [email protected] has

made my Vim in trouble. I need to fix Vim, roll back python3 to 3.7.

After brew installed [email protected], my Vim was in trouble. FUCK!

I know nothing to deal that!

So, I manually installed [email protected] package, my Vim had worked.

That manually installed [email protected] package was under:

/Library/Frameworks/Python.framework/Versions/

That upstairs directory is user's controlling installed directory.

Yes, I have to need that.

Terminal python3 was [email protected], but [email protected] still stayed there. I

did not need that.

Also, I did need [email protected] that brew did install instead of manually

[email protected].

SO,

firstly,

I uninstall [email protected]:

brew uninstall --ignore-dependencies [email protected]

secondly,

I uninstall that manually installed package [email protected]:

rm -rf /Library/Frameworks/Python.framework/Versions/3.7

Also delete that manually installed [email protected]app python 3.7:

rm -rf "/Applications/Python 3.7"

change soft link that under /usr/local/opt or /usr/local/bin about

python or python3 or python@3 or python3.7 from under

/Library/Frameworks/Python.framework/Versions/ to under

/usr/local/Cellar/.

/usr/local/bin:

cd /usr/local/bin

ls -l /usr/local/bin | grep "/Library/Frameworks/Python.framework/Versions/3.7"

unlink all_that_shallow

ln -s /usr/local/Cellar/all_that_shallow all_that_shallow_new_Cellar

e.g:

cd /usr/local/bin && pwd && ls -al | grep "python" && pwd && ls -al | grep "../Cellar/python/3.7.5/bin/" && pwd && ls -al | grep "local/opt/python"

ln -s ../Cellar/python/3.7.5/bin/2to3 2to3

ln -s ../Cellar/python/3.7.5/bin/2to3-3.7 2to3-3.7

ln -s ../Cellar/python/3.7.5/bin/easy_install-3.7 easy_install-3.7

ln -s ../Cellar/python/3.7.5/bin/idle3 idle3

ln -s ../Cellar/python/3.7.5/bin/idle3.7 idle3.7

ln -s ../Cellar/python/3.7.5/bin/pip3 pip3

ln -s ../Cellar/python/3.7.5/bin/pip3.7 pip3.7

ln -s ../Cellar/python/3.7.5/bin/pydoc3 pydoc3

ln -s ../Cellar/python/3.7.5/bin/pydoc3.7 pydoc3.7

ln -s ../Cellar/python/3.7.5/bin/python3 python3

ln -s ../Cellar/python/3.7.5/bin/python3-config python3-config

ln -s ../Cellar/python/3.7.5/bin/python3.7 python3.7

ln -s ../Cellar/python/3.7.5/bin/python3.7-config python3.7-config

ln -s ../Cellar/python/3.7.5/bin/python3.7m python3.7m

ln -s ../Cellar/python/3.7.5/bin/python3.7m-config python3.7m-config

ln -s ../Cellar/python/3.7.5/bin/pyvenv pyvenv

ln -s ../Cellar/python/3.7.5/bin/pyvenv-3.7 pyvenv-3.7

pwd && ls -al | grep "../Cellar/python/3.7.5/bin/" && pwd && ls -al | grep "local/opt/python"

/usr/local/opt:

cd /usr/local/opt

ls -l /usr/local/opt | grep "/Library/Frameworks/Python.framework/Versions/3.7"

unlink all_that_shallow_opt

ln -s /usr/local/Cellar/all_that_shallow_opt all_that_shallow_new_Cellar_opt

e.g:

cd /usr/local/opt && pwd && ls -al | grep"Cellar/python" && pwd && ls -al | grep "python"

ln -s /usr/local/Cellar/python/3.7.5 python && pwd && ls -al | grep "python"

ln -s /usr/local/Cellar/python/3.7.5 python@3 && pwd && ls -al | grep "python"

Or,

You could use like ln -snf new_source_directory_Cellar target_soft_link_opt_or_bin.

Refer:

Homebrew: Rollback from Python 3.7 to Python 3.6.5.x?

How can I install a previous version of Python 3 in macOS using homebrew?