{

description = "Novus Nix Dev Environment";

inputs = {

nixpkgs.url = "nixpkgs/nixos-25.11";

};

outputs =

{ self, nixpkgs, ... }:

let

system = "x86_64-linux";

pkgs = import nixpkgs { inherit system; };

llvmPkg = pkgs.llvmPackages_21;

in

{

packages.${system}.default = llvmPkg.stdenv.mkDerivation rec {

pname = "novus";

version = "0.18.0";

src = ./.;

nativeBuildInputs = [

pkgs.git

pkgs.cmake

pkgs.makeWrapper

];

cmakeFlags = [

"-DCMAKE_BUILD_TYPE=Release"

"-DFETCHCONTENT_FULLY_DISCONNECTED=ON"

];

cli11Src = pkgs.fetchFromGitHub {

owner = "CLIUtils";

repo = "CLI11";

rev = "v2.6.1";

sha256 = "sha256-q5q6TgSex0xjdWFf/4e6dhrN0qWPDjIgWBpdkCTlLys=";

};

rangSrc = pkgs.fetchFromGitHub {

owner = "agauniyal";

repo = "rang";

rev = "v3.1.0";

sha256 = "3k5ERH8XDk9eIA3H06j9054joz7pPVrFquISP3pzKFk=";

};

preConfigure = ''

mkdir -p build/_deps/cli11-src

cp -r ${cli11Src}/* build/_deps/cli11-src

chmod -R u+w build/_deps/cli11-src

mkdir -p build/_deps/rang-src

cp -r ${rangSrc}/* build/_deps/rang-src

chmod -R u+w build/_deps/rang-src

'';

# TODO: Instead of this manual copying implement a proper install target in our CMake setup.

installPhase = ''

cd ../bin

mv VERSION NOVUS_VERSION

mkdir -p $out/bin

cp -r * $out/bin/

'';

};

defaultPackage.${system} = self.packages.${system};

devShells.${system} = rec {

llvm = (pkgs.mkShellNoCC.override { stdenv = llvmPkg.stdenv; }) {

packages = [

pkgs.nixfmt-rfc-style

pkgs.clang-tools

llvmPkg.lld

llvmPkg.libcxx

llvmPkg.lldb

llvmPkg.clang

llvmPkg.bintools

pkgs.cmake

pkgs.gnumake

];

};

default = llvm;

};

};

}