Relocate the Python wrapper as entrypoint

python_appimage/data/entrypoint.sh

@@ -0,0 +1,25 @@
+for opt in "$@"
+do
+    [ "${opt:0:1}" != "-" ] && break
+    if [[ "${opt}" =~ "I" ]] || [[ "${opt}" =~ "E" ]]; then
+        # Environment variables are disabled ($PYTHONHOME). Let's run in a safe
+        # mode from the raw Python binary inside the AppImage
+        "$APPDIR/opt/{{ python }}/bin/{{ python }}" "$@"
+        exit "$?"
+    fi
+done
+
+# Get the executable name, i.e. the AppImage or the python binary if running from an
+# extracted image
+executable="${APPDIR}/opt/{{ python }}/{{ python }}"
+if [[ "${ARGV0}" =~ "/" ]]; then
+    executable="$(cd $(dirname ${ARGV0}) && pwd)/$(basename ${ARGV0})"
+elif [[ "${ARGV0}" != "" ]]; then
+    executable=$(which "${ARGV0}")
+fi
+
+# Wrap the call to Python in order to mimic a call from the source
+# executable ($ARGV0), but potentially located outside of the Python
+# install ($PYTHONHOME)
+(PYTHONHOME="${APPDIR}/opt/{{ python }}" exec -a "${executable}" "$APPDIR/opt/{{ python }}/bin/{{ python }}" "$@")
+exit "$?"