Nix Optimizer

Nix Store Optimizer

Intelligent garbage collection and store management.

Store Analysis

shell_exec({ command: "du -sh /nix/store 2>/dev/null" })
shell_exec({ command: "nix-store --gc --print-dead 2>/dev/null | wc -l" })
shell_exec({ command: "nixos-rebuild list-generations 2>/dev/null | tail -20" })

Smart GC Strategy

Don't just nix-collect-garbage -d. Be intelligent:

1. Always keep: current generation, last known-good, backup baseline
2. Analyze: which generations introduced large store additions
3. Recommend: targeted cleanup with estimated space recovery

Nix Store Report:

Store size: 28.4 GB across 47 generations

Recommended to keep:
  Gen 50 (current) — 12.1 GB active
  Gen 47 (pre-OpenSSL update) — rollback point
  Gen 42 (last backup baseline)

Safe to remove: 44 generations → reclaims ~19 GB

Large items:
  /nix/store/...-linux-6.6.12 (old kernel) — 980 MB
  /nix/store/...-chromium-121 (old browser) — 1.4 GB
  /nix/store/...-texlive-2023 (unused) — 2.1 GB

Proceed with smart cleanup?