Use uv pip install and uv run

This should implicitly create a virtual environment, .venv

I don't yet feel like including pyproject.toml and uv.lock

Author: mslw

.github/workflows/run-server-tests.yml

@@ -20,7 +20,7 @@ jobs:
         run: |
           uv tool install git-annex
           uv tool install datalad
-          if [ -f requirements-devel.txt ]; then uv pip install -r requirements-devel.txt; fi
+          uv pip install -r requirements-devel.txt
           echo which git-annex
           which git-annex
           echo which datalad
@@ -29,9 +29,9 @@ jobs:
       - name: Lint with flake8
         run: |
           # stop the build if there are Python syntax errors or undefined names
-          flake8 . --count --ignore E501,E722,E402 --show-source --statistics
+          uv run flake8 . --exclude .venv --count --ignore E501,E722,E402 --show-source --statistics
       - name: Test with pytest
         run: |
           git config --global user.email "github-test@example.com"
           git config --global user.name "Github Testscript"
-          pytest
+          uv run pytest