nix-secrets

`nix-secrets` is a lightweight secret management solution for NixOS that integrates seamlessly into the Nix module system, eliminating the need for external configuration files. It utilizes the age encryption format for secure secret storage and management, featuring templates, placeholders, and a simple CLI interface for key generation and secret editing. Notably, `nix-secrets` minimizes intermediate states and avoids public key leakage, offering a compact binary footprint compared to existing solutions like `sops-nix` or `agenix`.