Added simple attic watch store example

[mannp]

This is a simple but working systemd service to upload the contents of the local buildbox-nix store to an attic cache, for use my other machines/nodes.

[Mic92]

I added some suggestions above. I have not tested them yet. Could you try to apply them in your setup? Thanks!

[Mic92]

The CI error I can address later myself.

[mannp]

I had full expectation you would rip it apart lol, but hey, I will apply to mine for sure :)

It doesn't start though for me;

Jun 14 15:58:16 tcan attic-watch-store-start[1017725]: + ATTIC_TOKEN=<redacted>
Jun 14 15:58:16 tcan attic-watch-store-start[1017725]: + attic login prod https://cache.domain.com
Jun 14 15:58:16 tcan attic-watch-store-start[1017745]: terminate called after throwing an instance of 'nix::Error'
Jun 14 15:58:16 tcan attic-watch-store-start[1017745]:   what():  error: cannot determine user's home directory
Jun 14 15:58:18 tcan attic-watch-store-start[1017725]: /nix/store/wlmy9rjzgcb1k7fdqq0w1qvb9p140cnc-unit-script-attic-watch-store-start/bin/attic-watch-store-start: line 5: 1017745 Aborted                 (core dumped) attic login prod https://cache.domain.com $ATTIC_TOKEN
Jun 14 15:58:18 tcan systemd[1]: attic-watch-store.service: Main process exited, code=exited, status=134/n/a
Jun 14 15:58:18 tcan systemd[1]: attic-watch-store.service: Failed with result 'exit-code'.

#!/nix/store/agkxax48k35wdmkhmmija2i2sxg8i7ny-bash-5.2p26/bin/bash
set -e
set -eux -o pipefail
ATTIC_TOKEN=$(< $CREDENTIALS_DIRECTORY/prod-auth-token)
attic login prod https://cache.domain.com $ATTIC_TOKEN
attic use prod
exec attic watch-store prod:prod

[mannp]

Yes that works now for me 👍🏻

[Mic92]

Looks like attic-client is now in nixpkgs. So I just replaced the attic flake with that as it saves the user some rebuilds.

[Mic92]

@mergify queue

[mergify]

queue

✅ The pull request has been merged automatically

The pull request has been merged automatically at 51653df

[mannp]

Looks like attic-client is now in nixpkgs. So I just replaced the attic flake with that as it saves the user some rebuilds.

Okay with me, with the mental note that it may cause version mismatches if the flake module is used to configure the main attic service.

#, inputs is no longer required with the removal of the flake.

[Mic92]

The module also seems to use the server provided by nixpkgs from the looks of it: https://github.com/zhaofengli/attic/blob/717cc95983cdc357bc347d70be20ced21f935843/flake.nix#L183
So that should be reasonable in sync.