bug#42173: Nix on Guix System: can't update channels
We can add the path to bash to build-sandbox-path in /etc/nix.conf, described in https://nixos.wiki/wiki/FAQ.
bug#42173: Nix on Guix System: can't update channels
I found that if I put "sandbox = false" to /etc/nix/nix.conf. Nix can update channel. Maybe nix's sandbox forget to import some guix binary path?