Add pyproject.toml validation

Validate the file using validate-pyproject
Add the test as part of the main `test` target.
Add a workflow step to run the test.

Author: mpagot

.github/workflows/ci.yml

@@ -18,6 +18,8 @@ jobs:
         run: pip install -r requirements-dev.txt
       - name: Run tests + cov report
         run: make test-with-coverage
+      - name: Run validate-pyproject
+        run: make checkpyproject
       - name: Upload coverage to CodeCov
         uses: codecov/codecov-action@v5
         with:

Makefile

@@ -24,5 +24,9 @@ test-with-coverage:
 .PHONY: checkstyle
 checkstyle: ruff
 
+.PHONY: checkpyproject
+checkpyproject:
+	validate-pyproject pyproject.toml
+
 .PHONY: test
-test: only-test checkstyle
+test: only-test checkstyle checkpyproject

requirements-dev.txt

@@ -11,3 +11,4 @@ ruamel.yaml
 jsonschema
 urllib3<2 # responses needs <2, see https://github.com/getsentry/responses/issues/635
 ruff
+validate-pyproject[all]