[cicd] switch to uv/ty

.github/workflows/test.yml

@@ -14,11 +14,12 @@ jobs:
         python-version: ["3.11", "3.12", "3.13", "3.14"]
     steps:
       - uses: actions/checkout@v4
+      - uses: astral-sh/setup-uv@v6
       - uses: actions/setup-python@v5
         with:
           python-version: ${{ matrix.python-version }}
           allow-prereleases: true
-      - run: pip install -e ".[dev]"
-      - run: pytest --cov=check_unicode --cov-fail-under=80
-      - run: ruff check src/ tests/
-      - run: mypy src/
+      - run: uv sync --group dev
+      - run: uv run pytest --cov=check_unicode --cov-fail-under=80
+      - run: uv run ruff check src/ tests/
+      - run: uvx ty check src/

.gitignore

@@ -6,7 +6,6 @@ dist/
 build/
 .venv/
 .pytest_cache/
-.mypy_cache/
+.ty/
 .ruff_cache/
 .coverage
-uv.lock

.pre-commit-config.yaml

@@ -35,12 +35,14 @@ repos:
         args: [--fix]
       - id: ruff-format
 
-  - repo: https://github.com/pre-commit/mirrors-mypy
-    rev: v1.19.1
+  - repo: local
     hooks:
-      - id: mypy
-        args: [--strict, src/]
+      - id: ty
+        name: ty check
+        entry: uvx ty check src/
+        language: system
         pass_filenames: false
+        always_run: true
 
   - repo: https://github.com/codespell-project/codespell
     rev: v2.4.1

CHANGELOG.md

@@ -4,6 +4,9 @@
 
 ### Changed
 
+- Replace mypy with [ty](https://github.com/astral-sh/ty) for type checking
+- Move dev dependencies from `optional-dependencies` to `dependency-groups`
+- Switch CI from pip to uv for faster, reproducible installs; check in `uv.lock`
 - Extract codepoint/range parsing into `check_unicode.parsing` module for reuse
 - Codepoint parser now validates the Unicode range (0..U+10FFFF) and rejects
   empty/invalid input with clear error messages

CONTRIBUTING.md

@@ -5,7 +5,7 @@ Thanks for your interest in contributing to `check-unicode`.
 ## Development setup
 
 ```bash
-uv venv && uv pip install -e ".[dev]"
+uv venv && uv sync --group dev
 ```
 
 ## Before submitting a PR
@@ -15,7 +15,7 @@ uv venv && uv pip install -e ".[dev]"
    ```bash
    pytest --cov=check_unicode
    ruff check src/ tests/
-   mypy src/
+   uvx ty check src/
    ```
 
 2. Add or update tests for any new behavior.

README.md

@@ -133,10 +133,10 @@ Found 5 non-ASCII characters in 2 files (3 fixable, 1 dangerous)
 ## Development
 
 ```bash
-uv venv && uv pip install -e ".[dev]"
+uv venv && uv sync --group dev
 .venv/bin/pytest -v --cov
 .venv/bin/ruff check src/ tests/
-.venv/bin/mypy src/
+uvx ty check src/
 ```
 
 ## License

pyproject.toml

@@ -23,12 +23,20 @@ classifiers = [
   "Topic :: Software Development :: Quality Assurance",
 ]
 dynamic = [ "version" ]
-optional-dependencies.dev = [ "bump-my-version", "mypy", "pytest", "pytest-cov", "ruff" ]
 urls.Changelog = "https://github.com/mit-d/check-unicode/blob/main/CHANGELOG.md"
 urls.Issues = "https://github.com/mit-d/check-unicode/issues"
 urls.Repository = "https://github.com/mit-d/check-unicode"
 scripts.check-unicode = "check_unicode.main:main"
 
+[dependency-groups]
+dev = [
+  "bump-my-version",
+  "pytest",
+  "pytest-cov",
+  "ruff",
+  "ty",
+]
+
 [tool.hatch]
 build.targets.wheel.packages = [ "src/check_unicode" ]
 build.targets.sdist.include = [ "src/", "docs/check-unicode.1" ]
@@ -74,7 +82,9 @@ files = [
   { filename = "docs/check-unicode.1", search = "rev: v{current_version}", replace = "rev: v{new_version}" },
 ]
 
-[tool.mypy]
-python_version = "3.11"
-strict = true
-exclude = [ "tests/fixtures/" ]
+[tool.ty]
+environment.python-version = "3.11"
+environment.extra-paths = [ "src" ]
+src.exclude = [ "tests/fixtures/" ]
+terminal.error-on-warning = true
+rules.all = "error"