frigate: coral tpu support, audio model, nvidia ffmpeg hwaccel, other fixes

[mweinelt]

Supersedes: #332689
Closes: #320512, #344114

cc @nagisa

Things done

• Built on platform(s)
  • x86_64-linux
  • aarch64-linux
  • x86_64-darwin
  • aarch64-darwin
• For non-Linux: Is sandboxing enabled in nix.conf? (See Nix manual)
  • sandbox = relaxed
  • sandbox = true
• Tested, as applicable:
  • NixOS test(s) (look inside nixos/tests)
  • and/or package tests
  • or, for functions and "core" functionality, tests in lib/tests or pkgs/test
  • made sure NixOS tests are linked to the relevant packages
• Tested compilation of all packages that depend on this change using nix-shell -p nixpkgs-review --run "nixpkgs-review rev HEAD". Note: all changes have to be committed, also see nixpkgs-review usage
• Tested basic functionality of all binary files (usually in ./result/bin/)
• 25.05 Release Notes (or backporting 24.11 and 25.05 Release notes)
  • (Package updates) Added a release notes entry if the change is major or breaking
  • (Module updates) Added a release notes entry if the change is significant
  • (Module addition) Added a release notes entry if adding a new NixOS module
• Fits CONTRIBUTING.md.

---

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[nagisa]

The nginx changes seem good to me. The gasket/edgetpu changes LGTM.

Can't comment on tensorflow/model/label or nvidia changes.

[JManch]

I haven't tested this PR but on my system I need the following for the PCIe Coral to work as described here

users.groups.apex = {};

services.udev.extraRules = ''
  SUBSYSTEM=="apex", MODE="0660", GROUP="apex"
'';

systemd.services.frigate.serviceConfig.SupplementaryGroups = "apex";

[mweinelt]

Okay, renamed the edgetpu module to hardware.coral and also named the group for access to coral devices that.

@JManch Thanks for the pointer, I've integrated those changes.

[netpleb]

Sorry, I had originally commented on the wrong issue (#188719). @mweinelt I am happy to give this a try. It is pretty much exactly the fix I have been looking for! I have a flakes based system with a nixpkgs input pointed at nixpkgs-unstable. How would you suggest is the best way for me to try out your PR and report back? Do I need to somehow disable the existing nixpkgs frigate module?

[GoogleBot42]

This looks pretty good! I'll see if I can give it a try later today. It looks like it should be able to replace what I have already. https://github.com/GoogleBot42/nix-config/blob/eb6a50664cb3efbecde19cb9316a682cf64e983d/machines/storage/s0/frigate.nix#L143

[JManch]

Just tested my PCIe Coral with this PR and can confirm it works as expected!

[JManch]

nixpkgs/nixos/modules/services/video/frigate.nix

Line 559 in 44fe653

ExecStartPre = "-rm /var/cache/frigate/*.mp4";

Just as an extra small fix could this be replaced with something like:

ExecStartPre = pkgs.writeShellScript "frigate-clear-cache" ''
  rm -f /var/cache/frigate/*.mp4
'';

Currently I get frigate.service: Unable to locate executable 'rm': No such file or directory every time the service starts and I don't think the wildcard expansion works in this context.

[mweinelt]

Last call everyone! If you have further feedback, send it now.

The plan is to merge this later tonight (in ~6 hours).

[netpleb]

@frederictobiasc I have been trying to test this with my coral USB and frigate but to no avail. Would it be possible for you to share the relevant parts of the configuration you used to test this PR?

[netpleb]

Actually, a reboot seemed to fix the issue and now it properly detects the usb tpu it seems. I am still new to frigate so not totally able to test the detection functionality itself yet, but this was a huge step! Thanks so much @mweinelt !!!

[github-actions]

Successfully created backport PR for release-24.11:

• [Backport release-24.11] frigate: coral tpu support, audio model, nvidia ffmpeg hwaccel, other fixes #358277

[mweinelt]

Hey everyone, feel free to join #homeautomation:nixos.org on Matrix to stay connected. We talk a lot about Home Assistant, Frigate as well as Zigbee, Matter and Z-Wave in there.

[nixpkgs-ci]

Backport failed for release-24.11, because it was unable to cherry-pick the commit(s).

Please cherry-pick the changes locally and resolve any conflicts.

git fetch origin release-24.11
git worktree add -d .worktree/backport-357717-to-release-24.11 origin/release-24.11
cd .worktree/backport-357717-to-release-24.11
git switch --create backport-357717-to-release-24.11
git cherry-pick -x aa0a26280dbc13f7fd02b4b30b1629720dd532b4 2b2a669741df5025854714a9bb4ee61b02aef682 b96c4a67b9b8438039bb109b88cf03e7429dc27d d31bf00e2baf9144de90e24a508b3bec79bbcd26 4abc3dfc2811e49e4f79c874cba7460b0e22fc60 7e33e470df5dcbb9c84d6a08a1128953c4281e17 81001625a7a756dbfc50fbe5ae75d52b26c93e3f a810c07ff275612177aa5aed5bf37ec7658577de 2b56a916ca59813eb73fd12ba42d8c335f21b4ef 7411b8562915f37d5dec7127b89cf34aabcc1424 1c07d92099551535ed7f74d64c87aca4a6c6514b 591ebd39fb053579566ffe15519c71a4e29b0788