Export variables directly

The Paths weren't set when the export was done indirectly.

Contributes to CURA-9365

generators/VirtualPythonEnvResources/activate.jinja

@@ -4,8 +4,7 @@
 deactivate () {
     # reset old environment variables
     {% for var in envvars.keys() %}if [ -n "$_OLD_{{ var }}" ] ; then
-        {{ var }}="$_OLD_{{ var }}"
-        export {{ var }}
+        export {{ var }}="$_OLD_{{ var }}"
         unset _OLD_{{ var }}
     else
         unset {{ var }}
@@ -13,20 +12,16 @@ deactivate () {
     {% endfor %}
 
     if [ -n "${_OLD_VIRTUAL_PS1}" ] ; then
-        PS1="${_OLD_VIRTUAL_PS1}"
-        export PS1
+        export PS1="${_OLD_VIRTUAL_PS1}"
         unset _OLD_VIRTUAL_PS1
     fi
 }
 
 {% for var, value in envvars.items() %}if [ -n "${{ var }}" ] ; then
-    _OLD_{{ var }}="${{ var }}"
-    export _OLD_{{ var }}
+    export _OLD_{{ var }}="${{ var }}"
 fi
-{{ var }}="{{ value }}"
-export {{ var }}
+export {{ var }}="{{ value }}"
 {% endfor %}
 
 _OLD_VIRTUAL_PS1="${PS1:-}"
-PS1="({{ prompt }}) ${PS1:-}"
-export PS1
+export PS1="({{ prompt }}) ${PS1:-}"