Don't use camelCase, we don't use it elsewhere

flake.nix

@@ -5,8 +5,8 @@
 
   outputs = { self, nixpkgs, ... }: {
     nixosModules = rec {
-      default = parisContainer;
-      parisContainer = { ... }: { imports = [ ./paris-container.nix ]; };
+      default = paris-container;
+      paris-container = { ... }: { imports = [ ./paris-container.nix ]; };
     };
   };
 }