{
  inputs = {
    nixpkgs.url = "github:nixos/nixpkgs/nixpkgs-unstable";
    utils.url = "github:numtide/flake-utils";
    artemist-packages = {
      url = "git+https://git.mildlyfunctional.gay/artemist/packages.git";
      inputs.nixpkgs.follows = "nixpkgs";
      inputs.utils.follows = "utils";
    };
    rust-overlay = {
      url = "github:oxalica/rust-overlay";
      inputs.nixpkgs.follows = "nixpkgs";
      inputs.flake-utils.follows = "utils";
    };
  };
  outputs = { self, nixpkgs, utils, artemist-packages, rust-overlay }:
    utils.lib.eachDefaultSystem (system:
      let
        pkgs = import nixpkgs {
          inherit system;
          overlays = [
            artemist-packages.overlays.default
            rust-overlay.overlays.default
          ];
        };
      in rec {
        devShells.zephyr =
          artemist-packages.devShells.${system}.zephyr.override {
            toolchains = with pkgs.zephyrPackages.toolchains; [
              arm-zephyr-eabi
              riscv64-zephyr-elf
            ];
            modules = with pkgs.zephyrPackages.modules; [
              mbedtls
              hal_rpi_pico
              hal_atmel
              cmsis
            ];
            extraPackages = with pkgs; [ pyocd ];
          };
        devShells.zephyr-west = devShells.zephyr.override {
          enableWest = true;
          zephyrSrc = null;
          modules = [ ];
        };
        devShells.rust-embedded = let
          rust = pkgs.rust-bin.stable.latest.default.override {
            extensions = [ "rust-src" "llvm-tools-preview" "clippy" ];
            # just use all of them, why not
            targets = [
              "thumbv6m-none-eabi"
              "thumbv7m-none-eabi"
              "thumbv7em-none-eabi"
              "thumbv7em-none-eabihf"
              "riscv32imac-unknown-none-elf"
            ];
          };
          rust-form = pkgs.rustPlatform.buildRustPackage rec {
            pname = "form";
            version = "0.10.0";
            src = pkgs.fetchFromGitHub {
              owner = "djmcgill";
              repo = pname;
              rev = "v${version}";
              hash = "sha256-cqoc2sTtVdhTAQ65oaJKo1+YMfQu7eHCe8zjRPDz9zg=";
            };
            cargoHash = "sha256-dhPp93AH4VlOVJWXMMUwv8b53vLPdBY3WyaXE4kcEm4=";
          };
        in with pkgs;
        mkShell {
          packages = [
            cargo-binutils
            cargo-generate
            gdb
            openocd
            probe-rs
            rust
            rust-form
            svd2rust
            svdtools

          ];
          RUST_SRC_PATH = "${rust}/lib/rustlib/src/rust/library";
        };
        devShells.avr = with pkgs;
          pkgsCross.avr.mkShell {
            packages = [ avrdude gnumake ];

            LIBC = pkgsCross.avr.avrlibc;
          };
        devShells.emoji = with pkgs;
          mkShell {
            packages = [
              chromedriver
              chromium
              python3
              python3Packages.black
              python3Packages.ipython
              python3Packages.trio
              (python3Packages.selenium.overrideAttrs (old: {
                postInstall = old.postInstall + ''
                  for ver in v85 v120 v121 v122; do
                    DEVTOOLS=../common/devtools/chromium/$ver
                    for proto in js browser; do
                      python3 ../common/devtools/convert_protocol_to_json.py \
                        $DEVTOOLS/"$proto"_protocol.pdl \
                        --map_binary_to_string=true \
                        $DEVTOOLS/"$proto"_protocol.json
                    done
                    mkdir -p $DST_PREFIX/common/devtools/$ver
                    python3 generate.py \
                      $DEVTOOLS/browser_protocol.json \
                      $DEVTOOLS/js_protocol.json \
                      $DST_PREFIX/common/devtools/$ver
                  done
                '';

                nativeBuildInputs = old.nativeBuildInputs
                  ++ [ python3Packages.inflection ];
              }))
            ];

            CHROME = "${chromium}/bin/chromium";
          };
        devShells.typst = with pkgs; mkShell { packages = [ typst ]; };
        formatter = pkgs.nixfmt;
      });

}