valenpkgs

valenpkgs is Valen's personal Nix flake: a focused collection of custom derivations, an overlay, and a NixOS module. It targets x86_64-linux and uses nixpkgs from the nixos-26.05 branch.

Packages

Package	Description
devilutionx	DevilutionX 1.5.5, a modern Diablo engine build. It includes the upstream spawn.mpq Shareware data and starts without further setup.
netui	Network-management TUI provided by the upstream netui flake. Also available through the default overlay as pkgs.valenpkgs.netui.
topmem	CachyOS memory-monitoring utility.
psa-update	CLI for updating Stellantis infotainment systems.
prime-agent	Prime Intellect's coding-agent CLI with persistent sessions and a Python REPL kernel (version 0.9.6). Run it with nix run .#prime-agent -- --help.
agopengps	AgOpenGPS agricultural guidance application, packaged with Wine for x86_64 Linux.
linux-rpi4-minimal	Cross-built minimal headless Raspberry Pi 4 Linux kernel.

DevilutionX data

The default build installs the upstream Shareware spawn.mpq and wraps the binary with its installed data directory. To play the retail game, provide your legally obtained DIABDAT.MPQ in a directory you control and override the data directory at launch:

NIXPKGS_ALLOW_UNFREE=1 nix run --impure .#devilutionx -- \
  --data-dir /path/to/diablo-data

The retail game data is not distributed by this flake.

NixOS Module

Import the default module, then enable the packages you want:

{
  imports = [ inputs.valenpkgs.nixosModules.default ];

  valenpkgs.devilutionx = {
    enable = true;
    enableShareware = true; # Default; installs spawn.mpq.
  };
}

valenpkgs.devilutionx.enable installs DevilutionX. Set valenpkgs.devilutionx.enableShareware to false to omit spawn.mpq, for example when supplying only retail data. The module also exposes boolean options for topmem, agopengps, psa-update, and linux-rpi4-minimal.

Usage and Integration

Add the flake input to a flake-based NixOS configuration:

{
  inputs = {
    nixpkgs.url = "github:NixOS/nixpkgs/nixos-26.05";
    valenpkgs.url = "git+ssh://git@git.valentinus.dev/valeninki/nixpkgs.git";
    valenpkgs.inputs.nixpkgs.follows = "nixpkgs";
  };
}

Use an exported package directly in a configuration:

environment.systemPackages = [
  inputs.valenpkgs.packages.${pkgs.system}.netui
];

Run packages without installing them:

nix run .#netui
NIXPKGS_ALLOW_UNFREE=1 nix run --impure .#devilutionx

DevilutionX is marked with its upstream Sustainable Use License, which Nix treats as unfree. For imperative flake commands, use NIXPKGS_ALLOW_UNFREE=1 together with --impure. In NixOS, allow only this package with:

nixpkgs.config.allowUnfreePredicate = pkg:
  builtins.elem (lib.getName pkg) [ "devilutionx" ];

To use the netui overlay instead of the package output:

nixpkgs.overlays = [ inputs.valenpkgs.overlays.default ];

environment.systemPackages = [ pkgs.valenpkgs.netui ];

Development

The development shell provides nixpkgs-fmt, statix, and deadnix:

nix develop
nix fmt
NIXPKGS_ALLOW_UNFREE=1 nix flake check --impure