@civodul all of the above plus the adoption of FOD-based dependencies fetchers for the Rust and Go toolchains. (wrote this in the survey a few days ago, I sound like a broken record!)

It's definitely a tradeoff, patching a Rust or Go library for the whole packageset is definitly not an option for Nixpkgs. At least not a realistic one at the moment. But that's a tradeoff I personally think makes sense. The very little experience of packaging a not so complicated Rust package on Guix has been horrendeous. The importer is brittle, it generates a lot of code that you have to manually massage into the tree. All this is unecessary busywork in my opinion.

This plus my very limited experience with email-based workflows has been the real show-stopper for me during my latest attempt to use Guix more.

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I also feel like we need a Guix counterpart of nixpkgs-review for reviewers. This is a really important tool for me, and last time I checked (granted a few months ago), there were no credible option in the Guix land.

https://github.com/Mic92/nixpkgs-review