Unexpected input(s) 'extra_nix_config', valid inputs are ['use-gha-cache', 'listen', 'upstream-cache', 'diagnostic-endpoint', 'use-flakehub', 'flakehub-cache-server', 'flakehub-api-server', 'flakehub-flake-name', 'startup-notification-port', 'diff-store', 'source-binary', 'source-branch', 'source-pr', 'source-revision', 'source-tag', 'source-url', '_internal-strict-mode']