{
  description = "A Nix-flake-based Rust development environment";

  inputs = {
    nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
    nixpkgs-stable.url = "github:NixOS/nixpkgs/0ef56bec7281e2372338f2dfe7c13327ce96f6bb";
    rust-overlay.url = "github:oxalica/rust-overlay";
    flake-utils.url = "github:numtide/flake-utils";
    npmlock2nix = {
      url = "github:nix-community/npmlock2nix";
      flake = false;
    };
    llama-cpp = {
      url = "git+https://git.vlt81.de/tristan/llama.cpp.git";
    };
  };

  outputs =
    { self
    , nixpkgs
    , nixpkgs-stable
    , rust-overlay
    , flake-utils
    , npmlock2nix
    , llama-cpp
    }:
    flake-utils.lib.eachDefaultSystem
      (system:
      let
        rocmtoolkit_joined = pkgs.symlinkJoin {
          name = "rocm-merged";

          paths = with pkgs-stable.rocmPackages; [
            rocm-core
            clr
            rccl
            miopen
            miopengemm
            rocrand
            rocblas
            rocsparse
            hipsparse
            rocthrust
            rocprim
            hipcub
            roctracer
            rocfft
            rocsolver
            hipfft
            hipsolver
            hipblas
            rocminfo
            rocm-thunk
            rocm-comgr
            rocm-device-libs
            rocm-runtime
            clr.icd
            hipify
          ];
        };

        overlays = [
          rust-overlay.overlays.default
          (final: prev: {
            customRustToolchain = prev.rust-bin.fromRustupToolchainFile ./rust-toolchain.toml;
          })
          (final: prev: {
            npmlock2nix = import npmlock2nix { pkgs = prev; };
          })
        ];
        pkgs = import nixpkgs {
          inherit system overlays;
        };
        pkgs-stable = import nixpkgs-stable {
          inherit system overlays;
        };
        customNodeModules = pkgs.npmlock2nix.v2.node_modules {
          src = ./.;
          nodejs = pkgs.nodejs_20;
        };
        myllamacpp = llama-cpp.packages.${system}.rocm.override {
          rocmTargets = [ "gfx1100" ];
          llamaNative = true;
          llamaLTO = false;
        };
        buildInputs = with pkgs; [
          atk
          cairo
          gdk-pixbuf
          glib
          glibc
          gtk3
          harfbuzz
          libsoup_3
          openssl
          pango
          sqlite
          webkitgtk_4_1
          zlib
          rocmtoolkit_joined
          pkgs-stable.clang
          pkgs-stable.gzip
          pkgs-stable.coreutils
        ];
      in
      {
        packages = {
          cargo-leptos = pkgs.callPackage ./.nix/cargo-leptos.nix { };
        };
        devShells.default = pkgs.mkShell {
          packages = with pkgs;
            [
              customNodeModules
              customRustToolchain
              binaryen
              cacert
              cargo-bloat
              cargo-docset
              cargo-machete
              cargo-limit
              cargo-deny
              cargo-edit
              cargo-watch
              cargo-make
              cargo-udeps
              self.packages.${system}.cargo-leptos
              (wasm-bindgen-cli.override {
                version = "0.2.92";
                hash = "sha256-1VwY8vQy7soKEgbki4LD+v259751kKxSxmo/gqE6yV0=";
                cargoHash = "sha256-aACJ+lYNEU8FFBs158G1/JG8sc6Rq080PeKCMnwdpH0=";
              })
              cargo-outdated
              cargo-release
              dart-sass
              fish
              inotify-tools
              leptosfmt
              mold
              nodejs_20
              pkg-config
              rustywind
              sccache
              sqlx-cli
              unzip
              myllamacpp
            ]
            ++ buildInputs;

          buildInputs = buildInputs;
          shellHook = ''
            # allow runinng llamafiles
            # export PATH=${rocmtoolkit_joined}/bin:$PATH
            # export PATH=$PATH:${pkgs-stable.clang}/bin
            # export PATH=$PATH:${pkgs-stable.coreutils}/bin
            # export PATH=$PATH:${pkgs-stable.gzip}/bin

            export HIPCC_COMPILE_FLAGS_APPEND="-I${rocmtoolkit_joined}/include -I${rocmtoolkit_joined}/include/rocblas"
            export HIPCC_LINK_FLAGS_APPEND="-L${rocmtoolkit_joined}/lib"
            export ROCM_PATH=${rocmtoolkit_joined}
            export ROCM_SOURCE_DIR=${rocmtoolkit_joined}
            export HSA_OVERRIDE_GFX_VERSION=10.3.0 # this needs to be changed depending on your AMD gpu

            # setup node-modules
            export NPM_LOCAL_PREFIX=${customNodeModules}/node_modules
            (ln -s $NPM_LOCAL_PREFIX ./node_modules 2>/dev/null || unlink ./node_modules) && ln -s $NPM_LOCAL_PREFIX ./node_modules 2>/dev/null

            # export NIX_LD_LIBRARY_PATH=${pkgs.lib.makeLibraryPath buildInputs}:$NIX_LD_LIBRARY_PATH
            export LEPTOS_SASS_VERSION=1.71.0
            export LEPTOS_TAILWIND_VERSION=3.4.3
            export MALLOC_CONF=thp:always,metadata_thp:always
          '';
        };
      });
}