nix-package-updater

To automate Nix package updates, this Skill bumps version numbers, updates source URLs, and recalculates cryptographic hashes like sha256, cargoHash, and npmDepsHash. It targets specific custom packages including Helium, DevToys, opencode-morph-fast-apply, and agent-browser.

Recalculating cargoHash and npmDepsHash for reproducible Nix builds is handled by the Skill during the version bumping process. It automatically updates these cryptographic hashes to ensure local package definitions remain valid and reproducible.

Yes, you need Nix and its associated build tools installed to manage package derivations and dependencies. The Skill relies on this environment to update custom package definitions and verify the recalculated hashes for reproducible builds.

The best way to update custom Nix packages after an upstream release is to invoke this Skill. It updates the Nix definition, recalculates necessary hashes such as sha256, and verifies the build to ensure you use the latest stable version.

Yes, you can update source URLs and version numbers for Helium and DevToys packages. The Skill explicitly supports these custom packages, managing their version bumping and source reference updates to keep local definitions current.

The limitation of automating dependency updates for custom Nix packages is that the Skill is restricted to predefined packages like Helium, DevToys, opencode-morph-fast-apply, and agent-browser, and requires a local Nix environment to verify builds.