Modify Python version dependency by default

This is required for all "complex" Poetry operations, e.g. when
installing the project to run pytest or similar. To allow for building
packages that can be installed on Python 2, this can be turned off
explicitly by setting the environment variable IGNORE_DEPS_PYTHON.

Author: ehrenfeu

.github/workflows/build.yml

@@ -113,6 +113,8 @@ jobs:
 
     - name: 🎭👷 Build 🧱 project
       run: scripts/run-poetry.sh build
+      env:
+        IGNORE_DEPS_PYTHON: true  # required to build "py2.py3" wheels
 
     - name: 📤 Upload build artifacts
       uses: actions/upload-artifact@v4

scripts/run-poetry.sh

@@ -27,7 +27,19 @@ rm -rf dist/
 # adjust metadata version strings:
 scripts/pom-to-pyproject.sh
 
-# # sed -i 's/^python = ">=2.7"$/python = ">=3.10"/' pyproject.toml
+# in case the project needs to be "installed" (e.g. to run pytest and generate
+# coverage reports), the Python version specified in the project's dependencies
+# needs to be set to a version satisfying the other dependencies requirements -
+# this can be turned off e.g. for simply packaging for PyPi.
+PYPROJ="pyproject.toml"
+DEPS_PYTHON='>=3.10'
+if [ -z "$IGNORE_DEPS_PYTHON" ]; then
+    echo "$PYPROJ: setting [python = \"$DEPS_PYTHON\"]"
+    echo "Use 'export IGNORE_DEPS_PYTHON=true' to skip this step."
+    sed -i 's/^python = ">=2.7"$/python = "'"$DEPS_PYTHON"'"/' $PYPROJ
+else
+    echo "$PYPROJ: found 'IGNORE_DEPS_PYTHON' envvar, not modifying."
+fi
 
 set +o errexit  # otherwise the script stops if poetry exits non-zero
 poetry "$@"  # run poetry with the parameters given to the script