One feature of Nix is to be able to rebuild something the same way on different systems. The article suggests that adding the debug symbols is a simple flag in

One feature of Nix is to be able to rebuild something the same way on different systems. The article suggests that adding the debug symbols is a simple flag in the build expression. Based on that, you shouldn't need the debug symbols in advance, though ymmv, when trying to debug an issue in container A on dev machine B.