Erich Blume
e0d5f28147
## Summary - Add `dagger` to `hostPackages` for the ringtail nix-container-builder runner - Needed for `dagger call nix-version` fallback in the nix build workflow (authentik) - `hostPackages` is scoped to the runner's systemd unit PATH, not system-wide - Marks `install-dagger-on-nix-runner` Mikado card complete ## Deployment and Testing - [ ] Merge, then `mise run provision-ringtail` - [ ] `mise run container-build-and-release authentik` to verify nix build succeeds Reviewed-on: https://forge.ops.eblu.me/eblume/blumeops/pulls/234
39 lines
1.3 KiB
Markdown
39 lines
1.3 KiB
Markdown
---
|
|
title: Install Dagger on Nix Runner
|
|
modified: 2026-02-20
|
|
tags:
|
|
- how-to
|
|
- ci
|
|
- zot
|
|
---
|
|
|
|
# Install Dagger on Nix Runner
|
|
|
|
Install the Dagger CLI on the ringtail nix-container-builder runner so that the nix container build workflow can use `dagger call nix-version` to extract package versions from nixpkgs.
|
|
|
|
## Context
|
|
|
|
The `build-container-nix.yaml` workflow extracts container versions in this order:
|
|
|
|
1. `version = "..."` from `default.nix` (e.g. ntfy)
|
|
2. `ARG CONTAINER_APP_VERSION=` from Dockerfile (e.g. nettest)
|
|
3. `dagger call nix-version --package=<name>` for nixpkgs packages (e.g. authentik)
|
|
|
|
Step 3 fails on the ringtail nix runner because dagger is not installed. The runner currently only has nix, skopeo, and jq.
|
|
|
|
## What to Do
|
|
|
|
1. Add `dagger` to the ringtail nix runner environment in `nixos/ringtail/configuration.nix` (or equivalent)
|
|
2. Verify `dagger` is available in the runner's PATH
|
|
3. Re-run `mise run container-build-and-release authentik` to confirm the nix build succeeds
|
|
|
|
## Verification
|
|
|
|
- [ ] `ssh ringtail 'which dagger'` returns a path
|
|
- [ ] Authentik nix build workflow completes successfully
|
|
- [ ] `dagger call nix-version --package=authentik` works on the runner
|
|
|
|
## Related
|
|
|
|
- [[adopt-commit-based-container-tags]] — Parent card
|
|
- [[harden-zot-registry]] — Root goal
|