fix uv test locking

.github/workflows/lint.yml

@@ -69,7 +69,7 @@ jobs:
       - name: Install Dependencies
         run: |
           just setup ${{ steps.sp.outputs.python-path }}
-          uv add Django~=${{ matrix.django-version }}.0
+          just test-lock Django~=${{ matrix.django-version }}.0
           just install-docs
       - name: Install Emacs
         if: ${{ github.event.inputs.debug == 'true' }}

justfile

@@ -162,6 +162,19 @@ fix: lint format
 # run all static checks
 check: check-lint check-format check-types check-package check-docs check-docs-links _check-readme-quiet
 
+[script]
+_lock-python:
+    import tomlkit
+    import sys
+    f='pyproject.toml'
+    d=tomlkit.parse(open(f).read())
+    d['project']['requires-python']='=={}'.format(sys.version.split()[0])
+    open(f,'w').write(tomlkit.dumps(d))
+
+# lock to specific python and versions of given dependencies
+test-lock +PACKAGES: _lock-python
+    uv add {{ PACKAGES }}
+
 # run tests
 test *TESTS:
     @just run pytest --cov-append {{ TESTS }}