Preliminary poetry packaging script

Using Maven to perform the string filtering, a.k.a substituting the
placeholder with the actual package version in __init__.py.

Author: ehrenfeu

poetry-build.sh

@@ -0,0 +1,41 @@
+#!/bin/bash
+
+set -e
+
+cd "$(dirname "$0")"
+
+STATUS=$(git status --porcelain)
+
+if [ -n "$STATUS" ]; then
+    echo "===================================================================="
+    echo "=============== ERROR: repository unclean, stopping! ==============="
+    echo "===================================================================="
+    echo
+    git status
+    echo
+    echo "===================================================================="
+    echo "=============== ERROR: repository unclean, stopping! ==============="
+    echo "===================================================================="
+    exit 1
+fi
+
+# clean up old poetry artifacts:
+rm -rf dist/
+# clean up old maven artifacts:
+rm -rf target/
+# clean up potential leftovers from previous runs of this script:
+rm -rf sjlogging/
+
+# call maven to perform the "string-filtering" which will substitute the version
+# placeholder in __init__.py by the (maven-derived) version string:
+mvn process-resources
+
+# move the string-filtered source tree to the project root, so poetry will pick
+# it up automatically from there (without explicit configuration):
+mv target/classes/sjlogging/ .
+
+# let poetry build the wheel (and tar.gz)
+poetry build -vv
+
+# remove the string-filtered source tree:
+rm -rf sjlogging/