feat(nix): add nix-update-hash reusable workflow#75
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Reusable workflow_call action that updates the vendorHash in flake.nix when Go dependencies change and opens a PR targeting the triggering branch, so the hash fix lands in the same review as the dep update.
savme
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Jun 2, 2026
drewr
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Jun 3, 2026
## Summary Follows up on #75 — the original PR used `peter-evans/create-pull-request` which opened a separate PR targeting `main`. That's wrong: `go.mod` should never change directly on `main`, so the workflow will always be triggered from a feature or Renovate branch where a direct `git push` is permitted. - Replaces `peter-evans/create-pull-request` with a direct `git push` back to the triggering branch - Removes the now-unnecessary `pr-branch`, `pr-title`, and `pr-body` inputs - Drops `pull-requests: write` permission — only `contents: write` is needed - Updates docs to reflect the push-based approach and note that this workflow should not be triggered on `main`
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Summary
.github/workflows/nix-update-hash.yamlas a reusableworkflow_callaction that updatesvendorHashinflake.nixwhen Go dependencies changebase: ${{ github.ref_name }}), so the hash fix travels with the dependency update rather than landing separately onmaindocs/nix-update-hash/README.mddocumenting inputs, prerequisites (caller must provide aTaskfile.ymland update script), and usage exampleRelated
Extracted from datum-cloud/datumctl#199 as part of standardising this pattern across repos.