feat: Replace MyPy with ty type checker (do not merge)

.github/workflows/python_lint.yml

@@ -1,5 +1,8 @@
 name: Run Linters
 
+permissions:
+  contents: read
+
 on:
     push:
       branches:
@@ -56,8 +59,8 @@ jobs:
     - name: Check code format
       run: poetry run ruff format --check .
 
-  mypy-check:
-    name: MyPy Check
+  ty-check:
+    name: Ty Check
     runs-on: ubuntu-latest
     steps:
     # Common steps:
@@ -76,5 +79,5 @@ jobs:
       run: poetry install
 
     # Job-specifc step(s):
-    - name: Check MyPy typing
-      run: poetry run mypy .
+    - name: Check Ty typing
+      run: poetry run ty check .

pyproject.toml

@@ -59,7 +59,7 @@ deptry = "^0.21.1"
 docker = "^7.1.0"
 faker = "^21.0.0"
 freezegun = "^1.4.0"
-mypy = "^1.11.2"
+ty = "^0.0.1a16"
 pandas-stubs = "^2.1.4.231218"
 pdoc = "^14.3.0"
 poethepoet = ">=0.26.1,<0.32.0"
@@ -115,59 +115,17 @@ filterwarnings = [ # syntax: "action:message_regex:category:module:line"
 # [tool.ruff]
 # Ruff moved to dedicated config file: `.ruff.toml`
 
-[tool.mypy]
-# Platform configuration
-python_version = "3.10"
-# imports related
-ignore_missing_imports = true
-follow_imports = "silent"
-# None and Optional handling
-no_implicit_optional = true
-strict_optional = true
-# Configuring warnings
-warn_unused_configs = true
-warn_redundant_casts = true
-warn_unused_ignores = true
-warn_no_return = true
-warn_unreachable = true
-warn_return_any = false
-# Untyped definitions and calls
-check_untyped_defs = true
-disallow_untyped_calls = false
-disallow_untyped_defs = true
-disallow_incomplete_defs = true
-disallow_untyped_decorators = false
-# Disallow dynamic typing
-disallow_subclassing_any = true
-disallow_any_unimported = false
-disallow_any_expr = false
-disallow_any_decorated = false
-disallow_any_explicit = false
-disallow_any_generics = false
-# Miscellaneous strictness flags
-allow_untyped_globals = false
-allow_redefinition = false
-local_partial_types = false
-implicit_reexport = true
-strict_equality = true
-# Configuring error messages
-show_error_context = false
-show_column_numbers = false
-show_error_codes = true
+[tool.ty.environment]
+python-version = "3.10"
+
+[tool.ty.src]
 exclude = [
     "tests/integration_tests/fixtures/source-broken",
     "tests/integration_tests/fixtures/source-test",
     "docs",
     "tests",
 ]
 
-[[tool.mypy.overrides]]
-ignore_missing_imports = true  # No stubs yet (😢)
-module = [
-    "airbyte_protocol",
-    "airbyte_protocol.models",
-]
-
 [tool.pyright]
 pythonVersion = "3.10"
 venvPath = "./"       # Assuming .venv is at the root of your project
@@ -187,7 +145,8 @@ coverage-report = { shell = "coverage report" }
 coverage-html = { shell = "coverage html -d htmlcov && open htmlcov/index.html" }
 coverage-reset = { shell = "coverage erase" }
 
-check = { shell = "ruff check . && mypy . && pytest --collect-only -qq" }
+type-check = { shell = "ty check .", help = "Type check with ty" }
+check = { shell = "ruff check . && poe type-check && pytest --collect-only -qq" }
 
 docs-generate = {env = {PDOC_ALLOW_EXEC = "1"}, cmd = "python -m docs.generate run"}
 docs-preview = {shell = "poe docs-generate && open docs/generated/index.html"}