etlegacy

default.nix

{ system ? builtins.currentSystem }:
let
  pkgs = import <nixpkgs> { inherit system; };
  callPackage = pkgs.lib.callPackageWith (pkgs // self);
  self = with pkgs; {
    etlegacy = callPackage_i686 ./etlegacy.nix {};
  };
in self.etlegacy

etlegacy.nix

{ stdenv
, lib
, makeWrapper
, fetchgit
, fetchFromGitHub
, fetchzip
, fetchurl
, cmake
, git
, glew
, SDL2
, zlib
, minizip
, libjpeg
, curl
, lua5_3
, libogg
, libtheora
, freetype
, libpng
, sqlite
, openal
, unzip
}:

let
  version = "2.76";
  pkgname = "etlegacy";
  lua = lua5_3;
  mirror = "https://mirror.etlegacy.com";
  fetchAsset = {asset, sha256}: fetchurl
	  { url = mirror + "/etmain/" + asset;
		inherit sha256;
	  };
  pak0 = fetchAsset
	  { asset = "pak0.pk3";
		sha256 = "712966b20e06523fe81419516500e499c86b2b4fec823856ddbd333fcb3d26e5";
	  };
  pak1 = fetchAsset
	  { asset = "pak1.pk3";
		sha256 = "5610fd749024405b4425a7ce6397e58187b941d22092ef11d4844b427df53e5d";
	  };
  pak2 = fetchAsset
	  { asset = "pak2.pk3";
		sha256 = "a48ab749a1a12ab4d9137286b1f23d642c29da59845b2bafc8f64e052cf06f3e";
	  };
  binaries = builtins.fetchTarball {
	  url = "https://www.etlegacy.com/snapshot/file/122";
	  sha256 = "1wr0ghxq7xwbjlsvm6g0vmvssmk0hf7xncv3wcq8l4g66g57yw4x";
  };
in stdenv.mkDerivation rec {
	pname = pkgname;
	inherit version;

	src = fetchgit {
	  url= "https://github.com/etlegacy/etlegacy.git";
	  rev= "cf0ea440074b548c695553ba854a92f363666722";
	  sha256= "1mx9kqyl38418knx6i5q122v8072viig52bh2xfd68hxl644nvp6";
	  fetchSubmodules= false;
	};

	nativeBuildInputs = [ cmake git makeWrapper unzip ];
	buildInputs = [
	  glew SDL2 zlib minizip libjpeg curl lua libogg libtheora  freetype libpng sqlite openal
	];

	cmakeFlags = [
	  "-DCMAKE_BUILD_TYPE=Release"
	  "-DCROSS_COMPILE32=0"
	  "-DBUILD_SERVER=0"
	  "-DBUILD_CLIENT=1"
	  "-DBUILD_MOD=0"
	  "-DBUILD_MOD_PK3=0"
	  "-DBUILD_PAK3_PK3=0"
	  "-DBUNDLED_JPEG=0"
	  "-DBUNDLED_LIBS=0"
	  "-DINSTALL_EXTRA=0"
	  "-DINSTALL_OMNIBOT=0"
	  "-DINSTALL_GEOIP=0"
	  "-DINSTALL_WOLFADMIN=0"
	  "-DFEATURE_AUTOUPDATE=0"
	  "-DINSTALL_DEFAULT_BASEDIR=."
	  "-DINSTALL_DEFAULT_BINDIR=."
	  "-DINSTALL_DEFAULT_MODDIR=."
	];

	postInstall = ''
      ETMAIN=$out/etmain
      mkdir -p $ETMAIN
      ln -s ${pak0} $ETMAIN/pak0.pk3
      ln -s ${pak1} $ETMAIN/pak1.pk3
      ln -s ${pak2} $ETMAIN/pak2.pk3
      LEGACY=$out/legacy
      mkdir -p $LEGACY
      ln -s ${binaries}/legacy/etl_bin_v${version}.pk3 $LEGACY/
      ln -s ${binaries}/legacy/pak3_v${version}.pk3 $LEGACY/
      ln -s ${binaries}/legacy/qagame.mp.i386.so $LEGACY/
    '';

	meta = with stdenv.lib; {
	  description = "ET: Legacy is an open source project based on the code of Wolfenstein: Enemy Territory which was released in 2010 under the terms of the GPLv3 license.";
	  homepage = https://etlegacy.com;
	  platforms = platforms.unix;
	  license = licenses.gpl3;
	};
  }

FYI, there is now an etlegacy package available in nixpkgs-unstable for this, and it should also be in nixos-23.05 when that is released. By default it will install the 64-bit version, so if you want 32-bit, specify the package as pkgsi686Linux.etlegacy.

@ashleyghooper thanks, I had noticed it!