gleam.toml links are checked too restrictive

[oderwat]

We need to build our own Gleam documentation server that works similarly to https://hexdocs.pm/, but builds documentation by accessing our private repositories containing private Gleam packages for our team's use.

The documentation updater clones the repositories and modifies the gleam.toml file to add back-links to the documentation server index. This is typically an HTTPS address for our documentation server, but when running locally, it's something like http://localhost:8000.

We attempted to add links = [{ title = "Home", href = "/index.html" }] to the gleam.toml file, but this doesn't work because the documentation builder validates that links have a valid scheme, throwing an error: uri without scheme for key 'links'....

Is this validation really necessary? It also prevents adding relative links within the documentation (including fragment identifiers using "#").

We could work around this by using a fixed URI and performing string replacement in the generated documentation, but this approach feels clunky and inelegant.

[lpil]

Yes, agreed. I've made an issue for this!