Nix has first-class support for URLs. Like, there are strings ("https://example.org https://example.org") and URLS (https://example.org https://example.org). An

Nix has first-class support for URLs. Like, there are strings ("https://example.org https://example.org") and URLS (https://example.org https://example.org). And if URL is not valid, it will be parser error. However, this "feature" turned out to be misfeature and may be removed in future. The RFC: https://github.com/NixOS/rfcs/blob/master/rfcs/0045-deprecate-url-syntax.md https://github.com/NixOS/rfcs/blob/master/rfcs/0045-deprecat...