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README: add instruction on recycling home-manager generation from NixOS

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ckie 2022-02-11 09:51:53 +02:00
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README.md
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@ -11,6 +11,23 @@ nix community. If you want access read the security guide lines on
add your username to `roles/builder/users.nix`. Don't keep any important data
in your home! We will regularly delete `/home` without further notice.
### Using your NixOS home-manager configuration on the hosts
If you happen to have your NixOS & home-manager configurations intertwined but
you'd like your familiar environment on our infrastructure you can evaluate
`pkgs.writeShellScript "hm-activate" config.systemd.services.home-manager-<yourusername>.serviceConfig.ExecStart`
from your NixOS configuration, and send this derivation to be realized remotely:
(in case you aren't a Nix trusted user)
``` console
# somehow get the .drv of the above expression into $path
$ nix copy --to ssh://build01.nix-community.org --derivation $path
$ ssh build01.nix-community.org
$ nix-store -r $path
$ $path
```
*(My [implementation](https://github.com/ckiee/nixfiles/blob/aac57f56e417e31f00fd495d8a30fb399ecbc19b/deploy/hm-only.nix#L10) of [this](https://github.com/ckiee/nixfiles/blob/aac57f56e417e31f00fd495d8a30fb399ecbc19b/bin/c#L92-L95) ~ckie)*
## Support
If you hit any issues, ping us on Matrix in the