lib,

  nightly = true;
  extensions = [
    "rust-src"
    "rust-analyzer"
  ];
  targets = [
    "aarch64-apple-darwin"
    # "wasm32-wasi"
  ];
  overrideToolchain = t: t.default.override { inherit extensions targets; };

  fenix = import (fetchTarball "https://github.com/nix-community/fenix/archive/main.tar.gz") { };
  enableWasm = true;
  nightly = false;
  toolchain = if nightly then fenix.default else fenix.stable;
  wasmTarget = if nightly then "default" else "stable";
  fenixPackage =
    with fenix;
    combine ([
      (toolchain.withComponents ["cargo" "rustc" "rust-src" "rust-analyzer"])
    ]
    ++ lib.optional enableWasm [ targets.wasm32-unknown-unknown.${wasmTarget}.rust-std ]);

  home.packages = with pkgs; [
    (
      if nightly then
        (rust-bin.selectLatestNightlyWith overrideToolchain)
      else
        (overrideToolchain rust.bin.stable.latest)
    )
  ];

  home.packages = [ fenixPackage ] ++ lib.optional enableWasm [ pkgs.trunk ];

        };
        clangd = {
          command = "clangd";