Hello Vincent,
> Is there a way to see any benefit from these changes > (without building a vm or container image each time) ? > > Are those changes useful to do on their own ? Well yes it may reduce the closure size of the package (run `guix size sudo`) to get it. It can also fix cross-compilation. Because when cross-compiling, if groff needs to be run at build-time, it needs to be for the native architecture and not the target one. You can check it by running `guix build --target=aarch64-linux-gnu sudo` for instance. Thanks, Mathieu