Flakes Collection

A collection of useful Nix flakes providing packaged software and tools.

Available Flakes

Flake	Description	Quick Usage
📦 base-nixpkgs	Pinned nixpkgs (unstable & stable 25.05) for consistent package versions	See usage below
☸️ k8s-utils	Comprehensive Kubernetes CLI tools bundle	nix shell github:ck3mp3r/flakes?dir=k8s-utils
💻 opencode	AI coding agent with pre-populated cache and offline support	nix run github:ck3mp3r/flakes?dir=opencode
🧰 rustnix	Reusable Nix library functions for Rust multiarch and artifact packaging	See README
📊 slidev	Presentation slides for developers	nix run github:ck3mp3r/flakes?dir=slidev
🌳 topiary-nu	Nushell formatting with tree-sitter	nix run github:ck3mp3r/flakes?dir=topiary-nu

Quick Start

Run any flake directly

nix run github:ck3mp3r/flakes?dir=<flake-name>

Install to your profile

nix profile install github:ck3mp3r/flakes?dir=<flake-name>

Use in your flake.nix

{
  inputs = {
    <flake-name>.url = "github:ck3mp3r/flakes?dir=<flake-name>";
  };
}

Replace <flake-name> with base-nixpkgs, k8s-utils, topiary-nu, rustnix, slidev, or opencode.

Using base-nixpkgs

The base-nixpkgs flake pins versions of nixpkgs-unstable and stable (NixOS 25.05) that can be shared across multiple projects via the follows pattern. This is useful for:

• Single source of truth: One flake.lock to manage nixpkgs version
• Reduced duplication: Multiple flakes share the same nixpkgs store paths
• Easy updates: nix flake update in one place updates everywhere
• Consistency: All projects use identical package versions

Using follows to Share nixpkgs

Use follows to make all your flake inputs share the same pinned nixpkgs versions:

{
  inputs = {
    base-nixpkgs.url = "github:ck3mp3r/flakes?dir=base-nixpkgs";

    # Make other flakes use the same unstable nixpkgs
    some-other-flake.url = "github:someone/flake";
    some-other-flake.inputs.nixpkgs.follows = "base-nixpkgs/unstable";

    # Works with any flake that has nixpkgs as an input
    rustnix.url = "github:ck3mp3r/flakes?dir=rustnix";
    rustnix.inputs.nixpkgs.follows = "base-nixpkgs/unstable";
  };

  outputs = inputs @ {flake-parts, base-nixpkgs, ...}:
    flake-parts.lib.mkFlake {inherit inputs;} {
      systems = ["x86_64-linux" "aarch64-linux" "aarch64-darwin" "x86_64-darwin"];

      perSystem = {pkgs, ...}: {
        # All flakes now use the exact same nixpkgs version
        packages.default = pkgs.hello;
      };
    };
}

To use stable (25.05) instead, use base-nixpkgs/stable in the follows pattern.

This pattern ensures:

• No duplicate nixpkgs in your flake.lock
• All dependencies use compatible package versions
• Smaller closure sizes due to shared dependencies

Contributing

Feel free to submit PRs for additional useful flakes or improvements to existing ones. Each flake should:

• Be self-contained in its own directory
• Include comprehensive documentation in its README
• Follow Nix best practices
• Include proper licensing information

License

This repository is licensed under the Apache License 2.0. Individual packages may have their own licenses - see their respective documentation for details.