> you make the effort to stick to one version of the whole nixpkgs explicitly. the "effort" is just pointing to a particular checkout from nixpkgs repo > With

> you make the effort to stick to one version of the whole nixpkgs explicitly. the "effort" is just pointing to a particular checkout from nixpkgs repo > With flakes you can combine packages and versions explicitly. it's the same thing with default.nix/shell.nix, just having a separate lockfile changes nothing in the underlying `builtins.fetchGit` / `builtins.fetchTarball`