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59 lines
2.3 KiB
Markdown
59 lines
2.3 KiB
Markdown
---
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name: update-flake-input
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description: Update one or more pinned flake inputs with bounded lock-file changes and non-activating Linux and Darwin validation. Use for dependency refreshes, input-specific updates, automated lock-file pull requests, or diagnosing a regression introduced by flake.lock.
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---
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# Update a Flake Input
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Keep the update scope explicit and treat `flake.lock` as generated dependency
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state. Never activate a host as part of this workflow; do not run `nh os switch`,
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`nixos-rebuild switch`, `darwin-rebuild switch`, `home-manager switch`, or an
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equivalent command.
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## Bound the update
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1. Read `AGENTS.md`, inspect `git status --short`, and preserve unrelated work.
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2. Record the input names and the behavior or version change being requested.
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3. Prefer an input-specific update:
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```sh
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nix flake update <input-name>
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```
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Use an unrestricted `nix flake update` only when the task explicitly requests a
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full refresh. Do not hand-edit lock nodes.
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## Audit the lock diff
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Inspect the complete `flake.lock` diff. Confirm that changed nodes are the
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requested inputs or unavoidable followers and that source owners, repositories,
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reference types, and hashes remain expected. Investigate unexpected node
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replacement, disappearing followers, or a large transitive graph rewrite before
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validation.
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## Validate without activation
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Run the common validation workflow against the lock file:
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```sh
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nix run .#check -- plan --paths flake.lock --json
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nix run .#check -- fast --paths flake.lock
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nix run .#check -- eval --paths flake.lock
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nix run .#check -- build --paths flake.lock
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```
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A lock-file change requires full evaluation and the complete native check set.
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Linux and Darwin builds must run on compatible runners. The scheduled update
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workflow uploads the candidate lock file, builds Linux and Darwin checks, and
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creates a pull request only after both pass.
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When a failure appears only after the update, invoke `debug-nix-failure`, compare
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the failing derivation or option with the base lock, and narrow the responsible
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input before adding an override or patch.
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## Report the result
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List requested and transitively changed inputs, validation commands and native
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platform results, any package or option migration, and remaining manual runtime
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checks. Evaluation or a native build is not activation.
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