I removed the useless option and the need for unwrap from default_config_dir --- - [X] `./mach build -d` does not report any errors - [X] `./mach test-tidy` does not report any errors - [X] These changes fix #20174 (github issue number if applicable). - [X] These changes do not require tests because they are used at build time. Source-Repo: https://github.com/servo/servo Source-Revision: 48ff3965cc2e483a33d457e3ddaf9ad10007c275