So because I had problems with nixos 17.03 (kodi) for now I wanted to rollback to a older version and get rid of the newer generations on my system, so that I can update my 16.10 profile with other configurations.
Doing something like that: nix-env -G 198 -p /nix/var/nix/profiles/system nix-env --delete-generations 199 200... -p /nix/var/nix/profiles/system nix-collect-garbage The first question is why do I need to specify a path and use a nix tool when I want to make nixos system rollback? searching this path always is not very funny. Why cant I use some sort of nixos-env --delete-generations without a path? And why cant I use like with nix-channel not 198 as parameter to rollback instead of using switch + delete manually? then I wanted to change back the channel so that upgrades I do with nixos-rebuild would use 16.10 packages. I thought using --add 16.10-url and then --update would be the way to go, but I see there is also a rollback option. So lets try it: /ssh:root@PC: $ nix-env --list-generations 18 2017-05-12 04:04:24 19 2017-05-12 17:09:26 (current) /ssh:root@PC: $ nix-channel --rollback switching from generation 19 to 18 /ssh:root@PC: $ nix-env --list-generations 18 2017-05-12 04:04:24 19 2017-05-12 17:09:26 (current) /ssh:root@PC: $ nix-channel --list nixos https://nixos.org/channels/nixos-17.03 It seems to me that it did nothing. Why is there a second rollback feature? When would be a good time to use it, and a new add+update be not doing the same? Stefan _______________________________________________ nix-dev mailing list nix-dev@lists.science.uu.nl https://mailman.science.uu.nl/mailman/listinfo/nix-dev
