ImportError: cannot import name 'TypeAlias' from 'typing' on macOS

[asimilon]

After following the steps in README-Mac-MPS.md I get the following error:

(ldm) richelmes@M1mini:~/various/stable-diffusion
main 16:05 $ python scripts/dream.py --full_precision           
* Initializing, be patient...

Traceback (most recent call last):
  File "/Users/richelmes/various/stable-diffusion/scripts/dream.py", line 553, in <module>
    main()
  File "/Users/richelmes/various/stable-diffusion/scripts/dream.py", line 41, in main
    from ldm.simplet2i import T2I
  File "/Users/richelmes/various/stable-diffusion/ldm/simplet2i.py", line 29, in <module>
    from ldm.models.diffusion.ksampler import KSampler
  File "/Users/richelmes/various/stable-diffusion/ldm/models/diffusion/ksampler.py", line 2, in <module>
    import k_diffusion as K
  File "/Users/richelmes/various/stable-diffusion/src/k-diffusion/k_diffusion/__init__.py", line 1, in <module>
    from . import augmentation, config, evaluation, external, gns, layers, models, sampling, utils
  File "/Users/richelmes/various/stable-diffusion/src/k-diffusion/k_diffusion/external.py", line 6, in <module>
    from . import sampling, utils
  File "/Users/richelmes/various/stable-diffusion/src/k-diffusion/k_diffusion/sampling.py", line 10, in <module>
    from typing import Optional, Callable, TypeAlias
ImportError: cannot import name 'TypeAlias' from 'typing' (/opt/homebrew/anaconda3/envs/ldm/lib/python3.9/typing.py)

I tried:

pip uninstall typing_extensions
pip install typing_extensions==4.0.0
Found existing installation: typing_extensions 4.3.0
Uninstalling typing_extensions-4.3.0:
  Would remove:
    /opt/homebrew/anaconda3/envs/ldm/lib/python3.9/site-packages/typing_extensions-4.3.0.dist-info/*
    /opt/homebrew/anaconda3/envs/ldm/lib/python3.9/site-packages/typing_extensions.py
Proceed (Y/n)? y
  Successfully uninstalled typing_extensions-4.3.0
Collecting typing_extensions==4.0.0
  Using cached typing_extensions-4.0.0-py3-none-any.whl (22 kB)
Installing collected packages: typing_extensions
ERROR: pip's dependency resolver does not currently take into account all the packages that are installed. This behaviour is the source of the following dependency conflicts.
qudida 0.0.4 requires opencv-python-headless>=4.0.1, which is not installed.
albumentations 1.2.1 requires opencv-python-headless>=4.1.1, which is not installed.
Successfully installed typing_extensions-4.0.0

but still get the same error.

This was all working for me before pulling the latest version today, but I removed the ldm anaconda environment to be sure that everything was up to date and ran into problems, so I nuked everything and tried to install from scratch.

[ghost]

I'm also having this issue

[jnordberg]

I worked around this by upgrading to python 3.10.

diff --git a/environment-mac.yaml b/environment-mac.yaml
index 44cd1ef..6742a1f 100644
--- a/environment-mac.yaml
+++ b/environment-mac.yaml
@@ -1,11 +1,11 @@
-name: ldm
+name: ldm310
 channels:
   - pytorch-nightly
   - conda-forge
 dependencies:
-  - python==3.9.13
-  - pip==22.2.2
-
+  - python=3.10
+  - pip
+
   # pytorch-nightly, left unpinned
   - pytorch
   - torchmetrics
(END)

[psychedelicious]

TypeAlias is only supported as of python 3.10: https://docs.python.org/3/whatsnew/3.10.html (search in page for 'TypeAlias')

So I think this is was caused by the project reverting to python 3.9, which occurred here: #283

A new PR is pending to move back to 3.10: #301

[magnusviri]

This is an error on a different repo. This patch will fix it temporarily (I hope the code I'm pasting works right).

patch -u src/k-diffusion/k_diffusion/sampling.py
--- sampling.py-orig	2022-09-02 07:01:41.000000000 -0600
+++ sampling.py	2022-09-02 07:02:13.000000000 -0600
@@ -7,7 +7,11 @@
 from torch import Tensor
 from torchdiffeq import odeint
 from tqdm.auto import trange, tqdm
-from typing import Optional, Callable, TypeAlias
+from typing import Optional, Callable
+try:
+    from typing import TypeAlias
+except ImportError:
+    from typing_extensions import TypeAlias

 from . import utils

[magnusviri]

This bug was first noticed in this issue.

[magnusviri]

@jnordberg your version changes the env name to ldm310, which will probably confuse people. For a minute I thought that was my comment so I edited to fix it, but after saving the fix I realized it was someone else's comment! Sorry for that, I've restored it to the way you had it.

[jnordberg]

@magnusviri Ah ok, I was wondering what was going on there 😂

FWIW I'm not seeing any performance regression on python 3.10 on a 16g M1 MacBook Air

With 3.9 and the typing_extensions patch: 3.94s/it
With 3.10: 3.84s/it