On 09/25/2014 03:41 PM, Ricardo M. Correia wrote:
Also, I'm not sure if this is expected, but when I first tried to run
"nixos-rebuild dry-run" with this workaround applied, it started to
download and compile bash even though the man page of nixos-rebuild
specifically says: [...]

IIRC there are two steps -- first build nix, and then do the dry-run (or switch or anything else). Nix also needs its bash replaced, so first you need to build the bash replacement. That is, unless you specify --no-build-nix option.

Still, I agree it's bad that the man page doesn't explain this at all.

Moreover, I think we may only want to trigger nix rebuild when nix version changes (maybe just major version). I think the purpose was to get latest nix features in order to be able to evaluate the nixos config (it tended to need the newest nix features).


Vladimir


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