{
  inputs.nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";

  outputs = {
    self,
    nixpkgs,
  }: let
    supportedSystems = ["x86_64-linux" "aarch64-linux" "x86_64-darwin" "aarch64-darwin"];
    forEachSupportedSystem = f:
      nixpkgs.lib.genAttrs supportedSystems (system:
        f {
          pkgs = import nixpkgs {
            inherit system;
            config.allowUnfree = true;
            config.segger-jlink.acceptLicense = true;
            config.permittedInsecurePackages = [
              "segger-jlink-qt4-796s"
            ];
          };
        });
  in {
    devShells = forEachSupportedSystem ({pkgs}: {
      default =
        pkgs.mkShell.override
        {
          # Override stdenv in order to change compiler:
          # stdenv = pkgs.clangStdenv;
          # stdenv = pkgs.pkgsCross.arm-embedded.stdenv;
        }
        {
          packages = with pkgs;
            [
              # pkgsCross.arm-embedded.stdenv.cc
              # pkgsCross.arm-embedded.buildPackages.gdb
              gcc-arm-embedded-13 # replaces above packages since gcc compiles libc in arm, not thumb2
              segger-jlink
              clang-tools
              cmake
              codespell
              conan
              cppcheck
            ]
            ++ (
              if system == "aarch64-darwin"
              then []
              else [gdb]
            );
        };
    });
  };
}