issue upgrading typer 0.9.0 to 0.12.0 (typer directory in site packages appears to contain only typer-cli)

[brianmedigate]

First Check

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Commit to Help

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Example Code

$ python3.8 -m virtualenv venv
$ . venv/bin/activate
$ pip install typer==0.9.0
$ pip install typer==0.12.0
$ ll venv/lib/python3.8/site-packages/typer/
total 36
drwxrwxr-x  3 brianm brianm 4096 Mar 31 17:52 ./
drwxrwxr-x 28 brianm brianm 4096 Mar 31 17:52 ../
-rw-rw-r--  1 brianm brianm 9149 Mar 31 17:52 cli.py
-rw-rw-r--  1 brianm brianm 6689 Mar 31 17:52 _completion_classes.py
-rw-rw-r--  1 brianm brianm   30 Mar 31 17:52 __main__.py
drwxrwxr-x  2 brianm brianm 4096 Mar 31 17:52 __pycache__/

Description

After upgrading typer 0.9.0 to 0.12.0 in an existing virtual environment, the typer directory in site packages doesn't contain the expected code of typer. It looks like it only contains typer-cli or something like that. I'm guessing it has something to do with the recent packaging changes in #780.

Operating System

Linux

Operating System Details

Ubuntu 22.04.3

Typer Version

0.12.0

Python Version

3.8.18

Additional Context

No response

[brianmedigate]

A workaround in case it helps anyone else, uninstall typer-slim and then reinstall typer:

$ pip uninstall typer-slim
$ pip install typer==0.12.0

Uninstalling just typer doesn't solve it.

Or of course just recreate the virtual environment

[tiangolo]

Thanks for the report @brianmedigate! I made it an issue #790 and I'm working on it. 🤓

[tiangolo]

This was fixed in #791, released in Typer 0.12.1 🚀 🎉

[lone17]

I had the same problem. After further inspection, I think it is indeed due to the recent packaging changes. Here is what I found:

Problem

After the latest packing changes, typer-slim will write to site-packages/typer/ instead of typer as in older versions.

During the upgrade from a lower version, the dependencies will be installed before the old version is uninstalled (from pip's source code). So what happens are:

1. typer-slim is installed, writing to site-packages/typer/. (also typer-cli is installed but that's irrelevant)
2. Old typer is uninstalled, removing files from site-packages/typer/, while still leaving 2 files added by typer-slim (cli.py and __main__.py).
3. New typer is installed and nothing is written to site-packages/typer.

Edit: poetry also follows a similar upgrade procedure, as mentioned by @HansAarneLiblik.

Consequences

This leads to a few things:

• Upgrading from an older version will break the package.
  • So users need to uninstall typer before installing 0.12.0.
  • Or if you've already upgraded the package, then you need to uninstall typer-slim as mentioned by @brianmedigate then install the new version.
• pip uninstall typer in 0.12.0 will not work as expected because typer-slim still exists. So you can still import typer but cannot pip show typer.
• pip uninstall typer-slim in 0.12.0 will break typer. This means pip show typer works but import typer doesn't.

These issues would create quite confusion as someone upgrading from an older version will encounter it while someone doing a fresh install will not.

Solution

I suppose the solution would be changing pack to the previous packaging and converting typer-slim to an optional dependency typer[slim] instead.

[sizur]

Thank you! This helped mitigate the breaking change. Opening issues on github is not welcome even. I fear we'll have to make some decisions against some libraries I love.

[lone17]

I'm sure the maintainer will fix this in the next release so don't worry :)

[tiangolo]

Awesome investigation, this helps a lot, thank you @lone17! 🙇

I'm working on it. 🤓

I created an issue to track it here: #790

[tiangolo]

This was fixed in #791, released in Typer 0.12.1 🚀 🎉

Could you help me confirm it solves it?

[HansAarneLiblik]

I also witnessed this when using poetry v1.8.2 and upgrading typer 0.11.1 -> 0.12.0, and in the logs I see

  - Installing typer-slim (0.12.0): Installing...
Installing <venv_path>/lib/python3.12/site-packages/typer/__init__.py over existing file
Installing <venv_path>/lib/python3.12/site-packages/typer/_completion_classes.py over existing file
Installing <venv_path>/lib/python3.12/site-packages/typer/_completion_shared.py over existing file
Installing <venv_path>/lib/python3.12/site-packages/typer/_typing.py over existing file
Installing <venv_path>/lib/python3.12/site-packages/typer/colors.py over existing file
Installing <venv_path>/lib/python3.12/site-packages/typer/completion.py over existing file
Installing <venv_path>/lib/python3.12/site-packages/typer/core.py over existing file
Installing <venv_path>/lib/python3.12/site-packages/typer/main.py over existing file
Installing <venv_path>/lib/python3.12/site-packages/typer/models.py over existing file
Installing<venv_path>/lib/python3.12/site-packages/typer/params.py over existing file
Installing <venv_path>/lib/python3.12/site-packages/typer/py.typed over existing file
Installing <venv_path>/lib/python3.12/site-packages/typer/rich_utils.py over existing file
Installing <venv_path>/lib/python3.12/site-packages/typer/testing.py over existing file
  - Installing typer-slim (0.12.0)
  ...
  - Installing typer-cli (0.12.0)
  ...
  - Updating typer (0.11.1 -> 0.12.0)

which made it clear that something is messed up

[tiangolo]

This was fixed in #791, released in Typer 0.12.1 🚀 🎉

Could you help me confirm it solves it?

[HansAarneLiblik]

ISTM that upgrading from 0.10.0 to 0.12.1 worked!

Thank you!

[brianmedigate]

@tiangolo I think this might require your attention

[FCamborda]

I posted a related issue: #786
This hints to me that there's a new general packaging problem in this project.

[jansila]

Upgrading to 0.12.0 also messes up imports , just fyi if someone comes across this issue

>>> import typer
>>> typer.Argument()
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
AttributeError: module 'typer' has no attribute 'Argument'

[HansAarneLiblik]

Yes, this is the issue. It's not that the imports are "messed up", it's because typer-slim deleted the actual Python files

[lone17]

It's more than just messing up, your typer package is actually empty now 😂

[tiangolo]

This was fixed in #791, released in Typer 0.12.1 🚀 🎉

Could you help me confirm it solves it?

[corneliusroemer]

No, I still get a similar error with 0.12.3:

Traceback (most recent call last):
  File "/opt/homebrew/Caskroom/miniforge/base/envs/py11/bin/nwkfmt", line 3, in <module>
    from nwkfmt.cli import entry_point
  File "/Users/corneliusromer/code/nwk-formatter/nwkfmt/cli.py", line 7, in <module>
    app = typer.Typer(context_settings={"help_option_names": ["-h", "--help"]})
          ^^^^^^^^^^^
AttributeError: module 'typer' has no attribute 'Typer'

When reverting to 0.11.1 there's no issue.

Filed a discussion here: #799 (comment)