Handle config default in arg parsing

install.py

@@ -21,7 +21,7 @@ class Installer:
 
     def __init__(
         self,
-        config: str = "configs.yml",
+        config: str,
         first_install: bool = False,
         force: bool = False,
         hide_commands: bool = False,
@@ -506,7 +506,11 @@ def main() -> None:
 
     programs = args.programs
 
-    config = args.config
+    if args.config:
+        config = args.config
+    else:
+        config = "configs.yml"
+
     first_install = args.first_install
     force = args.force
     from_file = args.from_file