refactor: ♻️ extract github_user from package_github_repo

Author: martonvago

copier.yaml

@@ -40,14 +40,20 @@ _message_after_copy: |
     $ just list-todos
 
 # Questions:
-github_user:
+package_github_repo:
   type: str
-  help: "What is the GitHub username of the person or organisation who owns the package?"
+  help: "What is or will be the GitHub repository spec for the project?"
+  placeholder: "user/repo"
   validator: |
-    {% if github_user and not (github_user | regex_search('^[\w.-]+$')) %}
-    Must contain only alphanumeric characters and `_`, `-`, or `.`.
+    {% if package_github_repo and not (package_github_repo | regex_search('^[\w.-]+\/[\w.-]+$')) %}
+    Must be in the format `user/repo` and contain only alphanumeric characters and `_`, `-`, or `.`.
     {% endif %}
 
+github_user:
+  type: str
+  default: "{{ package_github_repo.split('/')[0] if package_github_repo else '' }}"
+  when: false
+
 package_name:
   type: str
   help: "What is the name of the package?"
@@ -62,11 +68,6 @@ package_name_snake_case:
   default: "{{package_name | replace('-', '_') | replace('.', '_')}}"
   when: false
 
-package_github_repo:
-  type: str
-  default: "{{ github_user ~ '/' ~ package_name }}"
-  when: false
-
 is_seedcase_project:
   type: bool
   help: "Is this package part of the Seedcase Project?"