76ad649dd8
The missing `\n` in the printf format string prevented multiple channels from being logged. The missing `nixpkgs=` in the `NIX_PATH` prevented `nixos-rebuild` from working if the system configuration has any reference to `nixpkgs`. Additionally: * Use process substitution instead of piping printf to avoid creating a subshell. * Set an empty `IFS` to avoid word splitting. * Add the `-r` flag to `read` to avoid mangling backslashes.
*** NixOS *** NixOS is a Linux distribution based on the purely functional package management system Nix. More information can be found at http://nixos.org/nixos and in the manual in doc/manual.