{ pkgsPath ? <nixpkgs>, crossSystem ? null }:

let
    mozOverlay = import (
        builtins.fetchTarball https://github.com/mozilla/nixpkgs-mozilla/archive/master.tar.gz
    );
    pkgs = import pkgsPath {
        overlays = [ mozOverlay ];
        inherit crossSystem;
    };
    targets = ["i686-unknown-linux-gnu" "x86_64-unknown-linux-gnu"];
in
with pkgs;
pkgs.rustPlatform.buildRustPackage {
    name = "linalg";
    src = ./.;
    cargoLock = {
        lockFile = ./Cargo.lock;
    };

    nativeBuildInputs = [
        (buildPackages.buildPackages.latest.rustChannels.stable.rust.override { inherit targets; })
    ];

    buildPhase = ''
      ${builtins.concatStringsSep "\n" (map (target:
        ''
          cargo build --release --target ${target}
        ''
      ) targets)}
    '';

    installPhase = ''
      mkdir -p $out/lib
      ${builtins.concatStringsSep "\n" (map (target:
        ''
          cp target/${target}/release/liblinalg.a $out/lib/liblinalg-${target}.a
        ''
      ) targets)}
    '';
}