Flakes help a lot with granular version pinning. It feels weird to have multiple nixpkgs at different commits as inputs, but it's not too bad if you imagine the

Flakes help a lot with granular version pinning. It feels weird to have multiple nixpkgs at different commits as inputs, but it's not too bad if you imagine them each as a distinct flake repo for the version of package you need (and name them accordingly).