working on some update script

extensions/fablabchemnitz/upgrade_mightyscape.inx

@@ -0,0 +1,15 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<inkscape-extension xmlns="http://www.inkscape.org/namespace/inkscape/extension">
+	<name>Upgrade MightyScape</name>
+	<id>fablabchemnitz.de.upgrade_mightyscape</id>
+    <param name="stash_untracked" type="bool" gui-text="Stash untracked files and continue to upgrade">false</param>
+    <effect needs-live-preview="false">
+		<object-type>all</object-type>
+		<effects-menu>
+			<submenu name="FabLab Chemnitz"/>
+		</effects-menu>
+	</effect>
+	<script>
+		<command location="inx" interpreter="python">upgrade_mightyscape.py</command>
+	</script>
+</inkscape-extension>

extensions/fablabchemnitz/upgrade_mightyscape.py

@@ -0,0 +1,56 @@
+#!/usr/bin/env python3
+
+"""
+Upgrade MightyScape from Inkscape Extension Dialog. Made for end users
+
+Extension for InkScape 1.X
+Author: Mario Voigt / FabLab Chemnitz
+Mail: mario.voigt@stadtfabrikanten.org
+Date: 14.05.2021
+Last patch: 14.05.2021
+License: GNU GPL v3
+"""
+
+import inkex
+import os
+from git import Repo
+
+class Upgrade(inkex.EffectExtension):
+
+    def add_arguments(self, pars):
+        pars.add_argument("--stash_untracked", type=inkex.Boolean, default=False, help="Stash untracked files and continue to upgrade")
+
+    def effect(self):
+        #get the directory of mightyscape
+        extension_dir = os.path.join(os.path.abspath(os.path.dirname(__file__)), '../', '../') #go up to dir /home/<user>/.config/inkscape/extensions/mightyscape-1.X/
+
+        repo = Repo(os.path.join(extension_dir, ".git"))
+        
+        #check if it is a non-empty git repository
+        if repo.bare is False:
+            
+            if repo.is_dirty(untracked_files=True) is False:        
+                if len(repo.untracked_files) > 0:
+                    if self.options.stash_untracked is True:
+                        repo.git.stash('save')
+                    else:
+                        inkex.utils.debug("There are some untracked files in your MightyScape directory. Still trying to pull recent files from git...")
+                        
+                origin = repo.remotes.origin
+                fetch_info = origin.fetch()
+    
+                for info in fetch_info:
+                    inkex.utils.debug("Updated %s to %s" % (info.ref, info.commit))
+                
+                #finally pull new data    
+                origin.pull()
+            else:
+                inkex.utils.debug("MightyScape is up to date!")  
+                exit(0)     
+
+        else:
+            inkex.utils.debug("No \".git\" directory found. Seems your MightyScape was not installed with git clone. Please see documentation on how to do that.")  
+            exit(1)
+
+if __name__ == '__main__':
+    Upgrade().run()