feat(renovate): track the agent-image nixpkgs channel pin (RIG-3365) - #1046
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added this pull request to stack #1048
September 9, 2026 20:35
The agent base image's devenv scope pins both a devenv-nixpkgs channel rev and a RigelBuild/devenv fork rev, but only the fork was tracked. Three of the four devenv pins in the tree moved on a Renovate cadence; agent-image's channel rev only ever moved when someone relocked it by hand. Add the fourth pin: a customManager over agent-image/devenv.lock's nixpkgs node under its own depName, a solo-branched packageRule, and a scope-correct refresher that relocks via the devenv CLI the lock itself pins. The refresher is separate from refresh-devenv-nixpkgs.ts rather than a widened scope on it. That script's tail is root-only: it mirrors the channel's biome into the catalog and locksteps the repo-root flake.nix. agent-image bakes nothing into a shell and has no flake, so widening would put the whole tail behind a conditional on a path two live rules already depend on. Co-authored-by: Matt Wilkinson <matt@rigel.build>
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This PR is part of a stack containing 2 PRs:
mainThe agent base image's devenv scope pins both a devenv-nixpkgs channel rev and
a RigelBuild/devenv fork rev, but only the fork was tracked. Three of the four
devenv pins in the tree moved on a Renovate cadence; agent-image's channel rev
only ever moved when someone relocked it by hand.
Add the fourth pin: a customManager over agent-image/devenv.lock's nixpkgs node
under its own depName, a solo-branched packageRule, and a scope-correct
refresher that relocks via the devenv CLI the lock itself pins.
The refresher is separate from refresh-devenv-nixpkgs.ts rather than a widened
scope on it. That script's tail is root-only: it mirrors the channel's biome
into the catalog and locksteps the repo-root flake.nix. agent-image bakes
nothing into a shell and has no flake, so widening would put the whole tail
behind a conditional on a path two live rules already depend on.
Co-authored-by: Matt Wilkinson matt@rigel.build