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Use when user asks to bump, update, or upgrade claude-code or codex versions in overlay.nix, or when checking if newer versions are available
Install with Codex or Claude Copy this prompt, paste it into Codex, Claude, or another assistant, and let it review the skill page and install it for you.
Based on SOC occupation classification
| name | bump-overlay-versions |
| description | Use when user asks to bump, update, or upgrade claude-code or codex versions in overlay.nix, or when checking if newer versions are available |
Updates claude-code and/or codex to latest versions in /etc/nixos/overlay.nix. Nix requires correct hashes which must be discovered through failed builds.
| Package | Check Latest | Hash Fields |
|---|---|---|
| claude-code | npm view @anthropic-ai/claude-code version | hash, npmDepsHash (keep empty) |
| codex | curl -s "https://api.github.com/repos/openai/codex/releases/latest" | jq -r '.tag_name' | hash, cargoHash |
# Current versions are in overlay.nix claudeCodeVersion and codexVersion blocks
# Check latest:
npm view @anthropic-ai/claude-code version
curl -s "https://api.github.com/repos/openai/codex/releases/latest" | jq -r '.tag_name'
# codex tag format: rust-v0.92.0 -> version is 0.92.0
In /etc/nixos/overlay.nix:
For claude-code:
claudeCodeVersion = {
version = "X.Y.Z"; # Update to new version
hash = ""; # Clear - will get from build error
npmDepsHash = ""; # Keep empty (no npm deps)
};
For codex:
codexVersion = {
version = "X.Y.Z"; # Update to new version (without rust-v prefix)
hash = ""; # Clear - will get from build error
cargoHash = ""; # Clear - will get from build error
};
just switch
The build will fail with hash mismatch errors showing the correct hash. Copy the got: hash value.
For codex: You'll need to run twice - once for hash (source), once for cargoHash (cargo deps).
Replace empty strings with the hashes from build errors, then run just switch again.
The overlay uses boolean flags - set to false to use nixpkgs versions instead:
enableCodexOverride = true; # Set false to use nixpkgs codex
enableClaudeCodeOverride = true; # Set false to use nixpkgs claude-code
Never delete the override code - just toggle the flags.
/etc/nixos/overlay.nix
Safely reclaim disk space through reviewed, automated cleanup actions on this machine, especially for Nix, Rust build artifacts, containers, caches, and service state. Use when an assessment has identified cleanup candidates, the user asks to free space or automate remediation, or low-space recovery requires measured deletion of rebuildable data.
Measure and explain disk usage without deleting data, producing reusable compressed ncdu snapshots and an evidence-backed cleanup handoff. Use when disk is low, a filesystem is unexpectedly large, builds fail from space pressure, the user asks what is consuming space, or deeper iterative disk analysis is needed before cleanup.
Safely delegate between Codex and Claude through read-only CLI wrappers. Use when the user explicitly asks Codex or Claude to delegate to the other, or when a workflow explicitly calls for an independent cross-model second opinion.
Use when user wants to find promotional or unwanted recurring emails to unsubscribe from, or when doing periodic inbox hygiene to identify senders worth unsubscribing from
Use when the user wants to reset or rotate a website or service password end-to-end, including finding the right `pass` entry, generating a new password with `xkcdpassgen`, retrieving reset emails through `gws gmail` or a local mail CLI, completing the reset in the browser via the Chrome extension, and updating the password store safely without losing entry metadata.
Use when investigating production org-agenda-api state, testing endpoints, or debugging production issues