Crash on schemathesis with --cache-dir=/dev/null #18454

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1. hauntsaninja

   added

   crash

   on Jan 13, 2025
2. hauntsaninja commented on Jan 13, 2025

   

   hauntsaninja

   on Jan 13, 2025

   CollaboratorAuthor

   More actions

   This would fix, but would be good to make a small repro. Looks related to schemathesis.internal

   diff --git a/mypy/build.py b/mypy/build.py
   index 342331243..a7a76a51f 100644
   --- a/mypy/build.py
   +++ b/mypy/build.py
   @@ -973,8 +973,10 @@ def write_deps_cache(
            if st.source_hash:
                hash = st.source_hash
            else:
   -            assert st.meta, "Module must be either parsed or cached"
   -            hash = st.meta.hash
   +            if st.meta:
   +                hash = st.meta.hash
   +            else:
   +                hash = ""
            meta_snapshot[id] = hash
    
        meta = {"snapshot": meta_snapshot, "deps_meta": fg_deps_meta}
   
3. hauntsaninja

   added a commit that references this issue on Jan 13, 2025

   Fix crash with `--cache-dir=/dev/null`

   ...

   This issue will close once commit fde46b5 is merged into the 'master' branch.

   fde46b5
4. hauntsaninja commented on Jan 13, 2025

   

   hauntsaninja

   on Jan 13, 2025

   CollaboratorAuthor

   More actions

   Needs --cache-fine-grained to repro

   λ tree                 
   .
   └── s
       ├── __init__.py
       └── internal
           └── checks.py
   
   3 directories, 2 files
   λ cat s/__init__.py
   λ cat s/internal/checks.py 
   from ..types import foo
   
   λ mypy s --cache-dir=/dev/null --cache-fine-grained
   s/internal/checks.py:1: error: Cannot find implementation or library stub for module named "s.types"  [import-not-found]
   s/internal/checks.py:1: note: See https://mypy.readthedocs.io/en/stable/running_mypy.html#missing-imports
   Traceback (most recent call last):
     File "/Users/shantanu/.virtualenvs/mypy-crxl/bin/mypy", line 8, in <module>
       sys.exit(console_entry())
                ^^^^^^^^^^^^^^^
     File "/Users/shantanu/dev/mypy/mypy/__main__.py", line 15, in console_entry
       main()
     File "/Users/shantanu/dev/mypy/mypy/main.py", line 119, in main
       res, messages, blockers = run_build(sources, options, fscache, t0, stdout, stderr)
                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
     File "/Users/shantanu/dev/mypy/mypy/main.py", line 203, in run_build
       res = build.build(sources, options, None, flush_errors, fscache, stdout, stderr)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
     File "/Users/shantanu/dev/mypy/mypy/build.py", line 191, in build
       result = _build(
                ^^^^^^^
     File "/Users/shantanu/dev/mypy/mypy/build.py", line 267, in _build
       graph = dispatch(sources, manager, stdout)
               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
     File "/Users/shantanu/dev/mypy/mypy/build.py", line 2947, in dispatch
       write_deps_cache(rdeps, manager, graph)
     File "/Users/shantanu/dev/mypy/mypy/build.py", line 976, in write_deps_cache
       assert st.meta, "Module must be either parsed or cached"
   AssertionError: Module must be either parsed or cached
   
5. hauntsaninja

   closed this as completedin #18457on Jan 13, 2025
6. hauntsaninja

   closed this as completedin d7ebe2eon Jan 13, 2025
7. Ali-Razmjoo

   added a commit that references this issue on Jan 14, 2025

   Fix crash with `--cache-fine-grained --cache-dir=/dev/null` (python#1…

   ...

   This issue will close once commit d7ebe2e is merged into the 'master' branch.

   d7ebe2e