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Introduction

A NixOS configuration template using the experimental flakes mechanism. Its aim is to provide a generic repository which neatly separates concerns and allows one to get up and running with NixOS faster than ever.

A core goal is to facilitate a (mostly) seamless transition to flakes. You could start by simply importing your configuration.nix from a module in hosts. There may be some translation if you import anything from the NIX_PATH, e.g. import <nixpkgs> {}, but the majority of any valid NixOS config should work right out of the box. Once your up and running, you may wish to modify your configuration to adhere to the ideals of this project.

⚠ Advisory

Flakes are still an experimental feature, so not everything works yet. Things like nixops/disnix are not yet supported.

Also, flakes are meant to deprecate nix-channels. I'd recommend not installing any. If your really want them, they should work if you hook them into your NIX_PATH manually.

Flake Talk:

Flake talk at NixConf

Setup

# This is not needed if your using direnv:
nix-shell

# It's recommend to start a new branch:
git checkout -b $new_branch template

# Generate a hardware config:
nixos-generate-config --show-hardware-config > ./hosts/${new_host}.nix

# Edit the new file, removing `not-detected.nix` from the imports.
# In order to maintain purity flakes cannot resolve from the NIX_PATH.

# You could import your existing `configuration.nix`, or the generic
# `./hosts/NixOS.nix` from here. The latter sets up Network Manger,
# an efi bootloader, an empty root password, and a generic user
# named `nixos`.

# Also ensure your file systems are set the way you want:
$EDITOR ./hosts/${new_host}.nix

# Backup your existing config:
mv /etc/nixos /etc/nixos.old

# Ensure this flake can be found in its expected location:
ln -s $PWD /etc/nixos

# A flake is vcs based, so only git aware files are bundled
# adding a new file to staging is enough:
git add ./hosts/${new_host}.nix

# A generic `rebuild` wrapper for `nix build` is provided
# bypassing the need for `nixos-rebuild`.

# Usage: rebuild [host] {switch|boot|test|dry-activate}
# where `host` is any file living in the `./hosts` directory

# Test your new deployment; this will be run as root:
rebuild $new_host test

# You may wish to start by creating a user:
mkdir users/new-user && $EDITOR users/new-user/default.nix

# Once your satisfied, permanently deploy with:
rebuild $new_host switch

Please read the doc in order to understand the impetus behind the directory structure.

Additional Capabilities

# Make an iso image based on `./hosts/niximg.nix`:
rebuild iso

# Install any package the flake exports:
nix profile install ".#packages.x86_64-linux.myPackage"

this flake exports multiple outputs for use in other flakes, or forks of this one:

# external flake.nix
{
  # ...
  inputs.nixflk.url = "github:nrdxp/nixflk";

  outputs = { self, nixpkgs, nixflk }: {

    nixosConfigurations.newConfig = nixflk.nixosConfigurations.someConfig;

    nixosConfigurations.myConfig = nixpkgs.lib.nixosSystem {
      system = "x86_64-linux";
      modules = [
        { nixpkgs.overlays = nixflk.overlays; }
        nixflk.nixosModules.myModule
      ];
    };
  };
}

NUR usage

You can use packages, modules and overlays from the Nix User Repository.

Since NUR packages are completely unchecked, they are not included by default. Check out the NUR branch for usage.

License

This software is licensed under the MIT License.

Note: MIT license does not apply to the packages built by this configuration, merely to the files in this repository (the Nix expressions, build scripts, NixOS modules, etc.). It also might not apply to patches included here, which may be derivative works of the packages to which they apply. The aforementioned artifacts are all covered by the licenses of the respective packages.