Use your own Rust by not setting the rust package input
[x] #25
[x] Keep the existing shell hook (somewhere?), but maybe just the prompt and not the echo
[ ] #44
[ ] Test whether the mold linker gives a significant performance gain and provide it on Linux if so?
[ ] Workflow to update the Rust version every 6 weeks to the latest version. But try to set it so that we don't update right as the new version releases, maybe a couple of weeks after each release.
[ ] Update other flake inputs in CI automatically too. Maybe at the same time as the Rust updates?
rustpackage inputmoldlinker gives a significant performance gain and provide it on Linux if so?