Daemon issues with retargeting re-exported names
Open
Nobody has claimed this yet.
bug
priority-0-high
topic-daemon
topic-fine-grained-incremental
- Dominant language
- Python
- Stars
- 20.6k
- Forks
- 3.3k
- PR merge metrics
- PR metrics pending
Description
Consider the following test:
[case testRetargetReexport]
from m import M
def f(x: M) -> None: ...
f(M())
[file m.py]
from n import M
[file m.py.2]
from q import M
[file n.py]
class M: ...
[file q.py]
class M: ...
[out]
==
The daemon fails in step two with the error
Argument 1 to "f" has incompatible type "q.M"; expected "n.M"
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start with the testRetargetReexport case and its m.py, m.py.2, n.py, and q.py fixtures, then run the daemon test that exercises them. Trace how the daemon retargets the re-exported M name between steps; done means step two produces no incompatible-type error.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- python
- Domain
- devtools
- Issue type
- Bug
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 35/100