Add mypy to new lint action

Signed-off-by: Nathan Weinberg <[email protected]>

.github/workflows/lint.yml

@@ -1,6 +1,6 @@
 # SPDX-License-Identifier: Apache-2.0
 
-name: Lint and Format
+name: Lint, Format, and MyPy
 
 on:
   push:
@@ -50,6 +50,7 @@ jobs:
             **/requirements*.txt
 
       - name: Install dependencies
+        id: deps
         run: |
           python -m pip install --upgrade pip
           python -m pip install tox
@@ -59,7 +60,12 @@ jobs:
           tox -e ruff -- check
 
       - name: Run linting
-        if: success() || failure()
+        if: ${{ !cancelled() && (steps.deps.outcome == 'success') }}
         run: |
           echo "::add-matcher::.github/workflows/matchers/pylint.json"
           tox -e lint
+
+      - name: Run mypy type checks
+        if: ${{ !cancelled() && (steps.deps.outcome == 'success') }}
+        run: |
+          tox -e mypy

pyproject.toml

@@ -38,7 +38,7 @@ source = "https://github.com/instructlab/sdg"
 issues = "https://github.com/instructlab/sdg/issues"
 
 [tool.setuptools_scm]
-version_file = "src/sdg/_version.py"
+version_file = "src/instructlab_sdg/_version.py"
 # do not include +gREV local version, required for Test PyPI upload
 local_scheme = "no-local-version"
 
@@ -103,3 +103,12 @@ from-first = true
 # import-heading-firstparty=First Party
 # import-heading-localfolder=Local
 known-local-folder = ["tuning"]
+
+[tool.mypy]
+disable_error_code = ["import-not-found", "import-untyped"]
+exclude = [
+    "^src/instructlab_sdg/generate_data\\.py$",
+    "^src/instructlab_sdg/utils\\.py$",
+]
+# honor excludes by not following there through imports
+follow_imports = "silent"

tox.ini

@@ -3,7 +3,7 @@
 [tox]
 # py3-unit runs unit tests with 'python3'
 # py311-unit runs the same tests with 'python3.11'
-envlist = ruff, lint, spellcheck
+envlist = ruff, lint, mypy, spellcheck
 minversion = 4.4
 
 # format, check, and linting targets don't build and install the project to
@@ -49,3 +49,13 @@ commands =
     sh -c 'command -v aspell || (echo "aspell is not installed. Please install it." && exit 1)'
     {envpython} -m pyspelling --config {toxinidir}/.spellcheck.yml --spellchecker aspell
 allowlist_externals = sh
+
+[testenv:mypy]
+description = Python type checking with mypy
+deps =
+  mypy>=1.10.0,<2.0
+  types-tqdm
+  types-PyYAML
+  pytest
+commands =
+  mypy src