home-managerでrollback

$ home-manager generations

これで世代を一覧する

code:例

home-manager generations

2018-01-04 11:56 : id 765 -> /nix/store/kahm1rxk77mnvd2l8pfvd4jkkffk5ijk-home-manager-generation

2018-01-03 10:29 : id 764 -> /nix/store/2wsmsliqr5yynqkdyjzb1y57pr5q2lsj-home-manager-generation

仮に、764に戻りたければ

$ /nix/store/2wsmsliqr5yynqkdyjzb1y57pr5q2lsj-home-manager-generation/activate