Add K_FRAMEWORK_BINARY_CACHE to print_substituters_warning (#118)

Co-authored-by: Daniel Britten <daniel.britten@outlook.com>

Author: Coda-Coda

src/kup/nix.py

@@ -295,9 +295,9 @@ def print_substituters_warning() -> None:
     add_user_to_trusted = ' '.join(new_trusted_users)
     add_user_to_trusted_nix = ' '.join([f'"{s}"' for s in new_trusted_users])
     rich.print(
-        f'\n⚠️ [yellow] The k-framework binary cache [green]{K_FRAMEWORK_CACHE}[/] is not configured in your nix installation and\n'
-        'the current user does not have sufficient permissions to add and use it.\n'
-        '[blue]kup[/] relies on this cache to provide faster installation using pre-built binaries.[/]\n\n'
+        f'\n⚠️ [yellow] The k-framework binary caches [green]{K_FRAMEWORK_CACHE}[/] and [green]{K_FRAMEWORK_BINARY_CACHE}[/] are\n'
+        'not configured in your nix installation and the current user does not have sufficient permissions to add and use them.\n'
+        '[blue]kup[/] relies on these caches to provide faster installation using pre-built binaries.[/]\n\n'
         'You can still install kup packages from source, however, to avoid building the packages on your local machine, consider:\n'
     )
     if NIXOS_VERSION is None: