What's the best way to use nix (pkg manager) to set up dev environments these days (i.e. as an alternative to, say, asdf)? devenv.sh?
Creating a vanilla flake.nix for each project to use with nix shell and direnv doesn't seem like a practical approach considering each language has very different requirements and there doesn't seem to be a go to repository of flake templates available anywhere.
If you are looking for a simple interface that is an alternative to asdf, but uses Nix under the hood, you could check out Devbox (https://github.com/jetpack-io/devbox). Our goal is to make spinning up per-project dev environments easy and approachable, without having to write a full nix.flake.