Looks like typer (a prefect dependency) released breaking changes earlier this week which break the default prefect installation. Might be worth pinning the typer version to

==0.10.0

to prevent this bug.

Thanks Nate, I shouldve checked there

👍

Wait hang on

oh you linked 0.11

I don't think it did 0.10 was just a small bug fix, I'm running it successfully in the background now

i dont have issues with newest typer now - can you describe what issues you're seeing?

It was a module import issues

import typer.core

no longer exists

can you provide an MRE? i have no issues with everything new installed

(prefect) nate :: ~/github.com/prefecthq/prefect ‹main›
» prefect version
Version:             2.16.8
API version:         0.8.4
Python version:      3.12.2
Git commit:          11cb641c
Built:               Fri, Mar 29, 2024 11:01 AM
OS/Arch:             darwin/arm64
Profile:             pong
Server type:         cloud

» uv pip list | rg 'prefect|typer'
prefect                    2.16.8
typer                      0.12.0
typer-cli                  0.12.0
typer-slim                 0.12.0

we typically like to avoid upper bound pins when possible, since it makes resolving dependencies much harder in many cases

Sorry my mistake, I must have been using 0.11.0 before

ah well actually, yeah i see it with certain command groups

» prefect deployment ls
Traceback (most recent call last):
  File "/Users/nate/github.com/prefecthq/prefect/.venv/bin/prefect", line 5, in <module>
    from prefect.cli import app
  File "/Users/nate/github.com/prefecthq/prefect/.venv/lib/python3.12/site-packages/prefect/cli/__init__.py", line 3, in <module>
    from prefect.cli.root import app
  File "/Users/nate/github.com/prefecthq/prefect/.venv/lib/python3.12/site-packages/prefect/cli/root.py", line 11, in <module>
    import typer.core
ModuleNotFoundError: No module named 'typer.core'

» uv pip list | rg 'prefect|typer'                                                                                                                                                     1 ↵
prefect                    2.16.8
typer                      0.12.0
typer-cli                  0.12.0
typer-slim                 0.12.0

Oh oof I shouldve tried the command I was using before

thanks for the callout https://github.com/PrefectHQ/prefect/pull/12512

Hey guys, just started running into this error. Any update on the current status of the

typer

issues? I tried adding a temporary pin for

type==0.11.1

and that seems to have resolved my issues (with prefect 2.16.8).

the fix is in

main

and will go out with next release, we are discussing pins for typer since their releases have caused recent similar issues

Hi, we are also having issues with typer 0.12.0 with the error

ModuleNotFoundError: No module named 'typer.core'

and prefect 2.16.8. Downgrading typer to 0.11.1 worked