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It's still required. It's used here: https://github.com/NixOS/nixpkgs/blob/acf7ae578589bb8bdd6f9273141d7053fed84= bed/pkgs/os-specific/linux/kernel/generic.nix#L186 > > I tried on my own, and it does seem still required (at least with > those packages mentioned in the example). But perhaps a Nix user knows > of a better way to do it, anyway. > > So I kept it. > > By the way, I think it would be nice to have a "standard", > well-maintained `shell.nix` (or a flake or whatever is best nowadays) > in the kernel tree somewhere, i.e. one that is known to work, that > covers most tooling used in the kernel, etc. > > Cheers, > Miguel I have my dev shell here in case it helps: https://github.com/nbdd0121/nix-collection/blob/trunk/dev/linux.nix It makes use of oxalica's rust-overlay. It can be used with shell.nix by a fetchTarball, but for obvious reasons you want that to be pinned and not be fetching latest version everytime. Flake is good for pinning, but using flake is a two-edged sword -- it both = gives you superb reproducibility so years down the line you can still build an ol= d environment (assuming the source tarballs used are still available or NixOS cache server still has a copy). But it also means that it can be outdated. So people (myself included) usua= lly combine pinning + regular updating by having flake.lock routinely updated. I'm not sure that really fits well inside kernel. If we don't use anything outside nixpkgs though, we can use "channel" featu= re of imperative nix which says `import ` will import user's local nixpk= gs version. A shell.nix using only that should work, but it will only be able = to use latest rustc/clippy/cargo/bindgen in nixpkgs and won't be able to inclu= de things like klint. Perhaps having a repo in rust-for-linux GitHub org (or somewhere else in kernel.org SCM) where we can point people to? Best, Gary