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agents: document nix-homebrew tap recovery

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Ivan Malison
2026-07-11 15:56:39 -07:00
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dotfiles/agents/skills/disk-space-cleanup/references/cleanup-patterns.md
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@@ -35,6 +35,12 @@ Preserve `.runner`, `.labels`, `.docker/config.json`, SSH material, Kubernetes m
- Empty Trash only with explicit approval.
- Close Chrome, Spotify, Gradle daemons, and similar applications before targeted cache cleanup.
## nix-homebrew Tap Recovery
- On macOS, `darwin-rebuild switch` can report that an existing Homebrew tap directory is in the way when legacy `homebrew-cask` or `homebrew-core` checkouts predate nix-homebrew management.
- For a root-owned cask tap, restore user ownership and run `brew untap --force homebrew/cask`.
- Homebrew refuses to untap core. Move the legacy core checkout out of the expected tap path, then rerun the switch so nix-homebrew recreates both managed tap links. Verify the subsequent Homebrew bundle and Darwin activation complete.
## Severe Pressure
When only megabytes remain, run the smallest safe cleanup first. Build tools and SQLite may fail opaquely before reporting `ENOSPC`. Avoid commands that need substantial temporary disk space until a safe margin has been restored.