mypy.ini

[mypy]
namespace_packages = True
plugins = pydantic.mypy, mypy_zope:plugin, scripts-dev/mypy_synapse_plugin.py
follow_imports = normal
show_error_codes = True
show_traceback = True
mypy_path = stubs
warn_unreachable = True
local_partial_types = True
no_implicit_optional = True

# Strict checks, see mypy --help
warn_unused_configs = True
# disallow_any_generics = True
disallow_subclassing_any = True
# disallow_untyped_calls = True
disallow_untyped_defs = True
disallow_incomplete_defs = True
# check_untyped_defs = True
# disallow_untyped_decorators = True
warn_redundant_casts = True
warn_unused_ignores = True
# warn_return_any = True
# no_implicit_reexport = True
strict_equality = True

# Run mypy type checking with the minimum supported Python version to catch new usage
# that isn't backwards-compatible (types, overloads, etc).
python_version = 3.9

files =
  docker/,
  scripts-dev/,
  synapse/,
  synmark/,
  tests/,
  build_rust.py

[mypy-synapse.metrics._reactor_metrics]
# This module  pokes at the internals of OS-specific classes, to appease mypy
# on different systems we add additional ignores.
warn_unused_ignores = False

[mypy-synapse.util.caches.treecache]
disallow_untyped_defs = False
disallow_incomplete_defs = False

[mypy-synapse.util.manhole]
# This module imports something from Twisted which has a bad annotation in Twisted trunk,
# but is unannotated in Twisted's latest release. We want to type-ignore the problem 
# in the twisted trunk job, even though it has no effect on normal mypy runs.
warn_unused_ignores = False


;; Dependencies without annotations
;; Before ignoring a module, check to see if type stubs are available.
;; The `typeshed` project maintains stubs here:
;;     https://github.com/python/typeshed/tree/master/stubs
;; and for each package `foo` there's a corresponding `types-foo` package on PyPI,
;; which we can pull in as a dev dependency by adding to `pyproject.toml`'s
;; `[tool.poetry.dev-dependencies]` list.

# https://github.com/lepture/authlib/issues/460
[mypy-authlib.*]
ignore_missing_imports = True

[mypy-ijson.*]
ignore_missing_imports = True

# https://github.com/msgpack/msgpack-python/issues/448