chore: Move mypy to uv (#6436)

keeping this in a separate dependency group since we install lots of
random packages just for typing

Author: sl0thentr0py

.gitattributes

@@ -1 +1,2 @@
 *.jsonl -diff linguist-generated=true
+uv.lock -diff linguist-generated=true

.github/workflows/ci.yml

@@ -28,15 +28,22 @@ jobs:
 
     steps:
       - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
-      - uses: actions/setup-python@a309ff8b426b58ec0e2a45f0f869d46889d02405 # v6
+      - name: Install uv
+        uses: astral-sh/setup-uv@08807647e7069bb48b6ef5acd8ec9567f424441b # v8.1.0
         with:
           python-version: 3.14
-      - uses: astral-sh/setup-uv@v5
 
-      - run: |
-          uv run ruff check tests sentry_sdk
-          uv run ruff format --check tests sentry_sdk
-          uv run tox -e linters
+      - name: Ruff check
+        run: uv run ruff check tests sentry_sdk
+
+      - name: Ruff format
+        run: uv run ruff format --check tests sentry_sdk
+
+      - name: Linters
+        run: uv run tox -e linters
+
+      - name: Mypy
+        run: uv run --group typing mypy sentry_sdk
 
   build_lambda_layer:
     name: Build Package

AGENTS.md

@@ -16,8 +16,8 @@ Use **tox** for testing (not pytest directly):
 
 ## Type Checking
 
-Use **tox** for type checking (not mypy directly):
-- Run `uv run tox -e mypy` before committing (must pass with zero errors)
+Mypy and its type stubs live in the opt-in `typing` dependency group:
+- Run `uv run --group typing mypy sentry_sdk` before committing (must pass with zero errors)
 - Strict mode enabled (`check_untyped_defs`, `disallow_untyped_defs`)
 
 ## Linting & Formatting

pyproject.toml

@@ -1,6 +1,8 @@
 #
-# Project dev dependencies (PEP 735 `dev` group, installed by default).
+# Project dev dependencies (PEP 735 groups).
+# `dev` is installed by default; `typing` is opt-in via `uv run --group typing`.
 # Run tox with: `uv run tox -e <env>`
+# Run mypy with: `uv run --group typing mypy sentry_sdk`
 #
 
 [dependency-groups]
@@ -12,6 +14,34 @@ dev = [
     "ruff",
 ]
 
+typing = [
+    "mypy",
+    # =================
+    # TODO: remove redundant urllib3 and certifi after proper migration from setup.py
+    "urllib3>=1.26.11",
+    "certifi",
+    # =================
+    "types-protobuf",
+    "types-gevent",
+    "types-greenlet",
+    "types-redis",
+    "types-setuptools<71",
+    "types-webob",
+    "opentelemetry-distro[otlp]",
+    "pymongo",
+    "loguru",
+    "httpcore[asyncio,http2]",
+    "launchdarkly-server-sdk",
+    "openfeature-sdk",
+    "statsig",
+    "UnleashClient<6",
+    "typer",
+    "strawberry-graphql",
+    "httpx",
+    "botocore-stubs",
+    "werkzeug<2.3.0",
+]
+
 #
 # Tool: Coverage
 #
@@ -81,14 +111,6 @@ ignore_missing_imports = true
 module = "pyramid.*"
 ignore_missing_imports = true
 
-[[tool.mypy.overrides]]
-module = "psycopg2.*"
-ignore_missing_imports = true
-
-[[tool.mypy.overrides]]
-module = "pytest.*"
-ignore_missing_imports = true
-
 [[tool.mypy.overrides]]
 module = "aiohttp.*"
 ignore_missing_imports = true
@@ -105,10 +127,6 @@ ignore_missing_imports = true
 module = "tornado.*"
 ignore_missing_imports = true
 
-[[tool.mypy.overrides]]
-module = "fakeredis.*"
-ignore_missing_imports = true
-
 [[tool.mypy.overrides]]
 module = "rq.*"
 ignore_missing_imports = true
@@ -117,10 +135,6 @@ ignore_missing_imports = true
 module = "pyspark.*"
 ignore_missing_imports = true
 
-[[tool.mypy.overrides]]
-module = "asgiref.*"
-ignore_missing_imports = true
-
 [[tool.mypy.overrides]]
 module = "langchain_core.*"
 ignore_missing_imports = true

requirements-linting.txt

@@ -77,14 +77,6 @@ deps =
     # with the -r flag
     -r requirements-testing.txt
 
-    linters: -r requirements-linting.txt
-    linters: werkzeug<2.3.0
-    linters: httpcore[asyncio]
-
-    mypy: -r requirements-linting.txt
-    mypy: werkzeug<2.3.0
-    mypy: httpcore[asyncio]
-
     # === Common ===
     py3.8-common: hypothesis
     common: pytest-asyncio
@@ -241,10 +233,7 @@ basepython =
     py3.14t: python3.14t
 
     # Python version is pinned here for consistency across environments.
-    # Tools like ruff and mypy have options that pin the target Python
-    # version (configured in pyproject.toml), ensuring consistent behavior.
     linters: python3.14
-    mypy: python3.14
 
 commands =
     ; Running `pytest` as an executable suffers from an import error
@@ -254,9 +243,4 @@ commands =
 
 [testenv:linters]
 commands =
-    mypy sentry_sdk
     python scripts/find_raise_from_none.py
-
-[testenv:mypy]
-commands =
-    mypy sentry_sdk

scripts/populate_tox/package_dependencies.jsonl

@@ -58,6 +58,8 @@
       - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
       - name: Install uv
         uses: astral-sh/setup-uv@08807647e7069bb48b6ef5acd8ec9567f424441b # v8.1.0
+        with:
+          cache-suffix: {% raw %}${{ github.workflow }}-${{ matrix.python-version }}{% endraw %}
 
       {% if needs_clickhouse %}
       - name: "Setup ClickHouse Server"

scripts/populate_tox/releases.jsonl

@@ -111,9 +111,7 @@ def start(n: "ast.expr") -> "Tuple[int, int]":
             return (n.lineno, n.col_offset)
 
         nodes_before_stmt = [
-            node
-            for node in nodes
-            if start(node) < stmt.last_token.end  # type: ignore
+            node for node in nodes if start(node) < stmt.last_token.end
         ]
         if nodes_before_stmt:
             # The position of the last node before or in the statement