Updated argcomplete activation. Now automatically runs in setup.py

setup.py

@@ -8,6 +8,7 @@
     Learn more under: https://pyscaffold.org/
 """
 import sys
+import os
 
 from pkg_resources import VersionConflict, require
 from setuptools import setup
@@ -18,6 +19,18 @@
     print("Error: version of setuptools is too old (<38.3)!")
     sys.exit(1)
 
+argcomplete_activation_script = f"{os.environ['VIRTUAL_ENV']}/lib/python{sys.version_info[0]}.{sys.version_info[1]}/site-packages/plugnparse/activate-argcomplete.sh"
+venv_activate = os.environ['VIRTUAL_ENV'] + '/bin/activate'
+
+argcomplete_activation_call = f"\n\n# activates f0cal namespace tab completion \nsource {argcomplete_activation_script}"
+
+with open(venv_activate, 'r') as f:
+    if f.read().find(argcomplete_activation_call) == -1:
+        with open(venv_activate, 'a') as g:
+            g.write(argcomplete_activation_call)
+
 
 if __name__ == "__main__":
-    setup(use_pyscaffold=True)
+    setup(use_pyscaffold=True,
+          scripts=['src/plugnparse/activate-argcomplete.sh']
+          )