WithAnnotations Crash in 1.9.0

[lfrodrigues]

Bug report

I have upgraded to 1.9.0 and I'm getting this crash when I run mypy . inside my src folder

Traceback (most recent call last):
  File "/home/parallels/Development/quickcheck/vitualenv/bin/mypy", line 8, in <module>
    sys.exit(console_entry())
  File "/home/parallels/Development/quickcheck/vitualenv/lib/python3.9/site-packages/mypy/__main__.py", line 11, in console_entry
    main(None, sys.stdout, sys.stderr)
  File "mypy/main.py", line 87, in main
  File "mypy/main.py", line 165, in run_build
  File "mypy/build.py", line 179, in build
  File "mypy/build.py", line 254, in _build
  File "mypy/build.py", line 2697, in dispatch
  File "mypy/build.py", line 3014, in process_graph
  File "mypy/build.py", line 3092, in process_fresh_modules
  File "mypy/build.py", line 1991, in fix_cross_refs
  File "mypy/fixup.py", line 26, in fixup_module
  File "mypy/fixup.py", line 90, in visit_symbol_table
  File "mypy/fixup.py", line 46, in visit_type_info
  File "mypy/fixup.py", line 92, in visit_symbol_table
  File "mypy/nodes.py", line 885, in accept
  File "mypy/fixup.py", line 137, in visit_var
  File "mypy/types.py", line 846, in accept
  File "mypy/fixup.py", line 161, in visit_instance
  File "mypy/types.py", line 846, in accept
  File "mypy/fixup.py", line 154, in visit_instance
  File "mypy/fixup.py", line 269, in lookup_qualified_typeinfo
  File "mypy/fixup.py", line 297, in lookup_qualified
  File "mypy/fixup.py", line 306, in lookup_qualified_stnode
  File "mypy/lookup.py", line 47, in lookup_fully_qualified
AssertionError: Cannot find component 'WithAnnotations[admin' for "django_stubs_ext.WithAnnotations[admin.models.MyModel, TypedDict({'count_loan_id': Any})]"

The crash is generated by this piece of code.

self.var1 = (
    MyModel.objects.filter(
        to_process_date__gte=timezone.localtime() - timedelta(days=5),
        last_attempted_datetime__isnull=False,
    )
    .values('loan_id')
    .annotate(count_loan_id=Count('loan_id'))
    .filter(count_loan_id__gte=3)
    .values_list('loan_id', flat=True)
)

When typing mypy doesn't crash

self.var1: 'QuerySet[Any]' = ...

System information

• OS:
• python version: 3.9.2
• django version: 2.2.17
• mypy version: 0.910
• django-stubs version: 1.9.0
• django-stubs-ext version: 0.3.1

[AustinScola]

I'm seeing this issue too. It seems that the first run if there is no cache works, and subsequent runs work if files have changed. But if nothing has changed then I see this error.

Is there any plan to fix this?

[AustinScola]

Maybe related to #725?

[AustinScola]

This still seems to be a huge problem for me and preventing me from using the mypy cache.

[AdrienLemaire]

Same problem with django-stubs 1.12.0. I need to run mypy --no-incremental all the time.

[Pixel-Jack]

After removing the .mypy_cache directory it worked again

[intgr]

I'm also having this issue.

I noticed that this error occurs when using --follow-imports=silent, but it disappears if I use --follow-imports=normal.

Edit: I was wrong, the effect is only temporary. --no-incremental is the actual fix.

[ashkop]

Still having this issue in 1.13.0.

[tony]

I seem to still get this with django-stubs 0.13.0 and mypy 0.990, python 3.10.1

[christianbundy]

Do we have a way to consistently reproduce this issue? I was pretty sure that my codebase wasn't impacted by it, because I couldn't reproduce it locally, but after modifying my CI to use the cache I was able to immediately reproduce it when the cache crossed between two branches.

Can we reproduce it with rm -rf .mypy_cache && mypy && mypy, or does it only happen when files change between the cache generation and the final run?

[henribru]

Can we reproduce it with rm -rf .mypy_cache && mypy && mypy, or does it only happen when files change between the cache generation and the final run?

I'm running into this issue, but it doesn't appear to happen with no changes between runs