{
  inputs = {
    nixpkgs.url = "github:NixOS/nixpkgs/nixos-24.11";
    flake-utils.url = "github:numtide/flake-utils";
    zig-overlay.url = "github:mitchellh/zig-overlay";
    #zig2nix.url = "github:Cloudef/zig2nix";
    #zig2nix.inputs.nixpkgs.follows = "nixpkgs";
  };

  outputs = inputs:
    inputs.flake-utils.lib.eachSystem [ "x86_64-linux" ] (system:
      let
        pkgs = import inputs.nixpkgs { inherit system; };
        zig = pkgs.zig;
        #zig = inputs.zig-overlay.packages.${system}.master;
        # Wrap binary package zig on linux so /usr/bin/env can be found inside a sandbox
        zigBin =
          pkgs.writeScriptBin "zig" ''
            args=()
            for d in /*; do
              args+=("--dev-bind" "$d" "$d")
            done
            ${pkgs.bubblewrap}/bin/bwrap "''${args[@]}" \
              --bind ${pkgs.coreutils} /usr \
              -- ${pkgs.lib.getExe zig} "$@"
          '';
        postInstall = ''
          set -x
          readelf -d $out/bin/test-* | grep RUNPATH
          lddtree $out/bin/test-*
          set +x
        '';
      in
      {
        packages.test-zig = pkgs.stdenv.mkDerivation {
          name = "test-zig";
          src = ./.;
          buildInputs = [ zigBin pkgs.gsl pkgs.pkg-config pkgs.llvmPackages.bintools pkgs.pax-utils pkgs.binutils ];
          buildPhase = ''
            set -x
            export ZIG_GLOBAL_CACHE_DIR=$PWD
            mkdir -p $out/bin
            zig build-exe main.c -femit-bin=$out/bin/test-zig $(pkg-config --cflags --libs gsl)
            set +x
          '';
          inherit postInstall;
        };
        packages.test-gcc = pkgs.stdenv.mkDerivation {
          name = "test-gcc";
          src = ./.;
          buildInputs = [ pkgs.gsl pkgs.pkg-config pkgs.pax-utils pkgs.binutils ];
          buildPhase = ''
            set -x
            mkdir -p $out/bin
            gcc main.c -o $out/bin/test-gcc $(pkg-config --cflags --libs gsl)
            set +x
          '';
          inherit postInstall;
        };
        devShells.default = pkgs.mkShell {
          packages = [
            zig
            pkgs.gsl
            #pkgs.blas
            pkgs.pkg-config
          ];
        };
      });
}