rust-overlay

I’m all for not using nix, especially where it doesn’t make sense. But rebuilding a working system from scratch, for reasons that aren’t actually a problem if they were to have spent even a couple hours looking at how people already solve those issues, seems fundamentally insane. Like others have said here, nix2container and flakes seem like they would address every problem they have. With regard to versioning, I have flakes written 3 years ago that still build with exactly the same versions and the same output as when it was first written. Sure does sound like that want to go to market and raise off a platform :D Edit: Literally just checked nixpacks’ github and it immediately jumped out to me that they are using rustPlatform in nixpkgs, not oxalica’s rust-overlay[0] which would have come up in any cursory search for the rust issues. And

If it's Rust, you can use https://github.com/oxalica/rust-overlay to get any version you want very easily without pinning an instance of nixpkgs just for it. asdf does not allow you to keep three different versions of the same language, so I'm not sure how that compares? It's not super-trivial to do in Nix, but at least you can do it. asdf is also no different than Nix when it comes to minor/major versions. You're at the mercy of what the plugin does, other than that you have to create your own plugin from scratch or make a fork. Nix has the option to patch things up more easily at least.