NixOS Configurations

Here are my NixOS configurations. I'm using this for consistent configuration and portability from machine to machine with a small amount of changes (usually disks, partitions, or hardware changes)

• I blewspent the summer of 2023 moving into this configuration after waving a fond farewell to near 2 decades of running Arch Linux. This, as with life, is still WIP. I documented the process on the Tired of IT! NixOS chapter on my website.

Tree Structure

• flake.nix: Entrypoint for NixOS configurations.
• hosts: Host Configurations
  • common: Shared configurations consumed by all hosts.
    • secrets: Secrets that are available to all users
  • <host_a>: "host_a" specific hardware and host configuration
    • secrets: Secrets that are specific to the 'host_a' host
  • ...: And so on as above with other hosts
• lib: Helpers, functions, libraries and timesavers
• overlays: Ammendments and updates to packages that exist in the nix ecosphere
• pkgs: Custom packages, services, scripts that are specific to this installation
• users: Individual User folders

Usage

Manual approach

Get your installer disc booted up and your disks partitioned. I took notes on how I did an install with BTRFS and encryption on my website. Once you have your partitions created and subvolumes mounted then we can continue..

• Generate your hardware-configuration.nix file.

nixos-generate-config --root /mnt --file /tmp

• Go ahead and clone this repository.

nix-shell -p git nixFlakes
git clone https://github.com/tiredofit/nixos-config.git /mnt/etc/nixos

• Either create a new host entry in flake.nix and add associated bits to the hosts folder or modify one of the existing hosts hardware-configuration.nix with what you generated above. That's kinda janky, but it'll get you started..

• Install your new NixOS system

nixos-install --root /mnt --flake /mnt/etc/nixos#<host>

Optimized deployment via script

• Use the included deployment script on an Arch or NixOS system to:
  • Add remove new hosts and templates
  • Update Flake
  • Update running system
  • Generate SSH Key and AGE keys per host
  • Update host / repository secrets
  • Remotely install a new system based on configuration via SSH
  • Build locally and remotely update an in place system via SSH

License

Do you what you'd like and I hope that this inspires you for your own configurations as many others have myself attribution would be appreciated.