plugin post installation script fixes specific to newer Debian-based systems like Ubuntu 24.04 and Debian 12+

Signed-off-by: ashish-jabble <[email protected]>

Author: ashish-jabble

plugins/packages/DEBIAN/postinst

@@ -41,7 +41,21 @@ if [ -f /usr/local/fledge/python/extras_install___PLUGIN_NAME__.sh ]; then
 fi
 # Install Python pip dependencies; if any
 if [ -f /usr/local/fledge/__INSTALL_DIR__/requirements.txt ]; then
-    python3 -m pip install -Ir /usr/local/fledge/__INSTALL_DIR__/requirements.txt
+    PYTHON_VERSION=$(python3 --version 2>&1 | awk '{print $2}')
+    PYTHON_MAJOR=$(echo "$PYTHON_VERSION" | cut -d. -f1)
+    PYTHON_MINOR=$(echo "$PYTHON_VERSION" | cut -d. -f2)
+
+    if [ "$PYTHON_MAJOR" -eq 3 ]; then
+        if [ "$PYTHON_MINOR" -ge 11 ] && [ "$PYTHON_MINOR" -lt 12 ]; then
+                FLAG="--break-system-packages"
+        elif [ "$PYTHON_MINOR" -ge 12 ]; then
+                FLAG="--ignore-installed --break-system-packages"
+        else
+            # Default to empty flag
+            FLAG=""
+        fi
+    fi
+    python3 -m pip install -Ir /usr/local/fledge/__INSTALL_DIR__/requirements.txt $FLAG
 fi
 
 # For C based plugins