trace log both current and prior plugin hash values#20759
Merged
ilevkivskyi merged 1 commit intopython:masterfrom Feb 6, 2026
Merged
trace log both current and prior plugin hash values#20759ilevkivskyi merged 1 commit intopython:masterfrom
ilevkivskyi merged 1 commit intopython:masterfrom
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I was debugging an issue where cache entries were being invalidated
due to a plugin hash not matching. It would have helped a little to
have both hashes listed so I could see which plugin didn't match and
have the hash to go hunt down the problem file on my workstation.
In this repo, first run (no cache):
```
$ mypy --config-file mypy_self_check.ini -vv mypy 2> l
Success: no issues found in 190 source files
(.venv) ecsb@fw16 ~/src/o/c-mypy (cbs/hash-debug) $ grep Plugin l
TRACE: Plugins snapshot (fresh) {"mypy.plugins.proper_plugin": "none:4449d775ee477b70f3e3ad7268db2128dae4324d"}
```
Second run:
```
$ mypy --config-file mypy_self_check.ini -vv mypy 2> l2
Success: no issues found in 190 source files
$ grep Plugin l2
TRACE: Plugins snapshot (cached) {"mypy.plugins.proper_plugin":"none:4449d775ee477b70f3e3ad7268db2128dae4324d"}
TRACE: Plugins snapshot (fresh) {"mypy.plugins.proper_plugin": "none:4449d775ee477b70f3e3ad7268db2128dae4324d"}
```
Contributor
|
According to mypy_primer, this change doesn't affect type check results on a corpus of open source code. ✅ |
ilevkivskyi
approved these changes
Feb 6, 2026
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I was debugging an issue where cache entries were being invalidated due to a plugin hash not matching. It would have helped a little to have both hashes listed so I could see which plugin didn't match and have the hash to go hunt down the problem file on my workstation.
In this repo, first run (no cache):
Second run: