Installation on Python from Xcode Command Line Tools

• I am on the latest Poetry version.
• I have searched the issues of this repo and believe that this is not a duplicate.
• If an exception occurs when executing a command, I executed it again in debug mode (-vvv option).

• OS version and name: macOS 11.5.2
• Poetry version: 1.1.8
• Link of a Gist with the contents of your pyproject.toml file:

Issue

Hello everyone, I'm having some trouble with Poetry recently, although I work with Python for some years.
On a clean macOS install, with only Command Line Tools from Apple installed, we get Python 3.8.2 with some outdated Pip.
Installing Poetry with this Pip version (19) breaks beautifully, but after an --user --upgrade pip I got it working.

The problem is: when using the official installer curl -sSL https://raw.githubusercontent.com/python-poetry/poetry/master/install-poetry.py | python3 - I got:

Retrieving Poetry metadata
# Welcome to Poetry!

This will download and install the latest version of Poetry,
a dependency and package manager for Python.

It will add the `poetry` command to Poetry's bin directory, located at:
/Users/mateus/Library/Python/3.8/bin

You can uninstall at any time by executing this script with the --uninstall option,
and these changes will be reverted.

Installing Poetry (1.1.8): Done
Poetry (1.1.8) is installed now. Great!

You can test that everything is set up by executing:
`poetry --version`

Everything seems fine, my PATH is already good:

echo $PATH
/Users/mateus/Library/Python/3.8/bin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin

But trying poetry I get zsh: command not found: poetry. 😢
Upon further investigation, we can see that poetry is a symlink under my "Poetry bin directory":

ll /Users/mateus/Library/Python/3.8/bin

-rwxr-xr-x  1 mateus  staff   251B  5 Set 12:45 doesitcache
-rwxr-xr-x  1 mateus  staff   245B  5 Set 12:45 keyring
-rwxr-xr-x  1 mateus  staff   279B  5 Set 12:45 normalizer
-rwxr-xr-x  1 mateus  staff   259B  5 Set 12:41 pip
-rwxr-xr-x  1 mateus  staff   259B  5 Set 12:41 pip3
-rwxr-xr-x  1 mateus  staff   259B  5 Set 12:41 pip3.8
-rwxr-xr-x  1 mateus  staff   253B  5 Set 12:45 pkginfo
lrwxr-xr-x  1 mateus  staff    66B  5 Set 12:45 poetry -> /Users/mateus/Library/Application Support/pypoetry/venv/bin/poetry
-rwxr-xr-x  1 mateus  staff   273B  5 Set 12:45 virtualenv
-rwxr-xr-x  1 mateus  staff   246B  5 Set 12:41 wheel

Okay, so lets check what's on /Users/mateus/Library/Application Support/pypoetry/venv/bin/:

ll /Users/mateus/Library/Application\ Support/pypoetry/venv/bin 

-rw-r--r--  1 mateus  staff   2,1K  5 Set 12:45 activate
-rw-r--r--  1 mateus  staff   1,4K  5 Set 12:45 activate.csh
-rw-r--r--  1 mateus  staff   3,0K  5 Set 12:45 activate.fish
-rw-r--r--  1 mateus  staff   1,7K  5 Set 12:45 activate.ps1
-rw-r--r--  1 mateus  staff   1,2K  5 Set 12:45 activate_this.py
-rwxr-xr-x  1 mateus  staff   306B  5 Set 12:45 pip
-rwxr-xr-x  1 mateus  staff   306B  5 Set 12:45 pip-3.8
-rwxr-xr-x  1 mateus  staff   306B  5 Set 12:45 pip3
-rwxr-xr-x  1 mateus  staff   306B  5 Set 12:45 pip3.8
lrwxr-xr-x  1 mateus  staff   128B  5 Set 12:45 python -> /Library/Developer/CommandLineTools/Library/Frameworks/Python3.framework/Versions/3.8/Resources/Python.app/Contents/MacOS/Python
lrwxr-xr-x  1 mateus  staff     6B  5 Set 12:45 python3 -> python
lrwxr-xr-x  1 mateus  staff     6B  5 Set 12:45 python3.8 -> python
-rwxr-xr-x  1 mateus  staff   293B  5 Set 12:45 wheel
-rwxr-xr-x  1 mateus  staff   293B  5 Set 12:45 wheel-3.8
-rwxr-xr-x  1 mateus  staff   293B  5 Set 12:45 wheel3
-rwxr-xr-x  1 mateus  staff   293B  5 Set 12:45 wheel3.8

As you can see, no signal whatsoever of poetry on Library/Application\ Support/pypoetry/venv/bin, and I really don't understand why. Anyone have any clues?

Already tried a complete uninstall of everything with rm by hand.

Trying to install the alpha/preview release using official installer works. Trying to install from pip directly also works.
So it's seem related to the installer for 1.1.8 and some specific macOS thing, what do you guys think?

Thanks, and I hope I help someone with this issue, I didn't find anything related on my research.

Start with install-poetry.py and reproduce the official 1.1.8 installation on macOS 11.5.2 using only Apple Command Line Tools and Python 3.8. Compare it with the working preview and direct-pip installations. Done means the official installer creates a usable poetry command on the reported setup.