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nixpkgs/pkgs/AGENTS.md

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# pkgs/ AGENTS.md
## OVERVIEW
Custom package registry using `callPackage` pattern for flake-wide availability.
## STRUCTURE
- `default.nix`: Central registry (entry point for overlays)
- `code2prompt/`: Rust package
- `hyprpaper-random/`: Bash script
- `launch-webapp/`: Webapp wrapper
- `mem0/`: Python package + custom `server.py`
- `msty-studio/`: AppImage wrapper
- `pomodoro-timer/`: Timer utility
- `tuxedo-backlight/`: Hardware control
- `zellij-ps/`: Gitea-hosted package
## WHERE TO LOOK
- **Register new pkg**: Add entry to `pkgs/default.nix` attribute set
- **Modify pkg**: Edit `pkgs/<name>/default.nix` (version, hash, deps)
- **Check visibility**: `nix flake show` (uses `pkgs/default.nix` via `overlays/default.nix`)
- **Add scripts**: Place alongside `default.nix` in package folder (e.g., `mem0/server.py`)
## CONVENTIONS
- **CallPackage**: Always use `pkgs.callPackage ./dir {}` in registry
- **Dir == Attr**: Package directory name MUST match its registry attribute
- **Path literals**: Reference local assets using `./file` within derivations
- **Self-contained**: Keep all package-specific files in their own directory
## ANTI-PATTERNS
- **Orphaned dirs**: Creating `pkgs/new-pkg/` without updating `pkgs/default.nix`
- **Direct flake imports**: Importing packages in `flake.nix` instead of through the registry
- **Implicit deps**: Not declaring dependencies in the package function arguments
- **Non-derivations**: Placing NixOS/HM modules here (use `modules/` instead)