poetry self update cannot find pip

[miquecg]

• 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).

It looks like -vvv doesn't work with this and other commands.

• Arch Linux
• Poetry 1.1.12

Issue

When trying to update Poetry to latest version I get a FileNotFoundError complaining about pip. Poetry was installed using https://install.python-poetry.org script.

Updating Poetry to 1.1.13

Updating dependencies
Resolving dependencies... (0.3s)

Package operations: 30 installs, 2 updates, 0 removals

  - Installing certifi (2021.10.8)

  FileNotFoundError

  [Errno 2] No such file or directory: 'pip'

  at /usr/lib/python3.10/subprocess.py:1842 in _execute_child
      1838│                     else:
      1839│                         err_filename = orig_executable
      1840│                     if errno_num != 0:
      1841│                         err_msg = os.strerror(errno_num)
    → 1842│                     raise child_exception_type(errno_num, err_msg, err_filename)
      1843│                 raise child_exception_type(err_msg)
      1844│ 
      1845│ 
      1846│         def _handle_exitstatus(self, sts,

pip exists inside Poetry virtualenv.

❯ l .local/share/pypoetry/venv/bin
total 108K
drwxr-xr-x  266 dic 13 18:13 .
drwxr-xr-x   76 dic 13 18:13 ..
-rw-r--r-- 2,0K dic 13 18:13 activate
-rw-r--r--  930 dic 13 18:13 activate.csh
-rw-r--r-- 2,1K dic 13 18:13 activate.fish
-rw-r--r-- 8,9K dic 13 18:13 Activate.ps1
-rwxr-xr-x  248 dic 13 18:13 doesitcache
-rwxr-xr-x  242 dic 13 18:13 keyring
-rwxr-xr-x  276 dic 13 18:13 normalizer
-rwxr-xr-x  253 dic 13 18:13 pip
-rwxr-xr-x  253 dic 13 18:13 pip3
-rwxr-xr-x  253 dic 13 18:13 pip3.10
-rwxr-xr-x  250 dic 13 18:13 pkginfo
-rwxr-xr-x  245 dic 13 18:13 poetry
-rwxr-xr-x  14K dic 13 18:13 python
-rwxr-xr-x  14K dic 13 18:13 python3
-rwxr-xr-x  14K dic 13 18:13 python3.10
-rwxr-xr-x  270 dic 13 18:13 virtualenv

[alecandido]

I'm not 100% sure, but since it's using subprocess to call pip, I believe you need pip in the environment in which you are the moment you call poetry from shell.

Can you try to run poetry from inside an environment in which you actually have pip. Or even better, can you try installing pip user wide?

[miquecg]

In fact Poetry does have a pip installed on its own virtualenv, but for some reason it wasn't finding it, which finally led me to PR #5048.

Manually applying those changes allowed Poetry to update without any further problems. Good to know if anyone else stumbles upon this.

Thanks for showing up to help 👍

[github-actions]

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