> As Vladimir pointed out, your version of Nix is too old. Yes, something like a year.
> The easiest solution is probably to install the latest version of Nix: > http://hydra.nixos.org/job/nix/trunk/build.x86_64-linux/latest > E.g. > $ nix-install-package --non-interactive --url \ > http://hydra.nixos.org/build/5636025/nix/pkg/nix-1.6pre3181_8e74c0b-x86_64-linux.nixpkg > > Hopefully nixos-rebuild will then work. Afterwards you can do "nix-env -e > nix". Thanks, this command didn't fail and downloaded new packages. BUT new package binaries are NOT RUNNABLE. Bash says that. So now I have runnable (but old) nix-env in one shell, and not runnable in all new shell tabs. The problem is not only with nix-env, perl is not runnable also. old runnable nix-env hosts in `/run/current-system/sw/bin/nix-env` new nix-env hosts in `/nix/var/nix/profiles/default/bin/nix-env`
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