Merge branch 'nix-shell' into 'main'

Nix shell

See merge request bde/nk20!201

apps/wei/forms/surveys/wei2024.py

@@ -291,7 +291,7 @@ class WEISurveyAlgorithm2024(WEISurveyAlgorithm):
         for survey in surveys:
             survey.free()
             if survey.registration.user_id in hardcoded_first_year.keys():
-                survey.select_bus(hardcoded_first_year[survey.registration.user_id])
+                survey.select_bus(hardcoded_first_year[s.registration.user_id])
             survey.save()
 
         non_men = [s for s in surveys if s.registration.gender != 'male']