error[E0599]: no function or associated item named `new` found for struct `Pixels` in the current scope
  --> site/src/components/pixels.rs:54:34
   |
54 |             let pixels = Pixels::new(width, height, gl_context).unwrap();
   |                                  ^^^ function or associated item not found in `Pixels`

{
  description = "Build a cargo project";

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

    # The version of wasm-bindgen-cli needs to match the version in Cargo.lock
    # Update this to include the version you need
    nixpkgs-for-wasm-bindgen.url = "github:NixOS/nixpkgs/4e6868b1aa3766ab1de169922bb3826143941973";

    crane = {
      url = "github:ipetkov/crane";
      inputs.nixpkgs.follows = "nixpkgs";
    };

    flake-utils.url = "github:numtide/flake-utils";

    rust-overlay = {
      url = "github:oxalica/rust-overlay";
      inputs.nixpkgs.follows = "nixpkgs";
    };
  };

  outputs = { self, nixpkgs, crane, flake-utils, rust-overlay, nixpkgs-for-wasm-bindgen, ... }:
    flake-utils.lib.eachDefaultSystem (system:
      let
        pkgs = import nixpkgs {
          inherit system;
          overlays = [ (import rust-overlay) ];
        };

        inherit (pkgs) lib;

        rustToolchainFor = p: p.rust-bin.stable.latest.default.override {
          # Set the build targets supported by the toolchain,
          # wasm32-unknown-unknown is required for trunk.
          targets = [ "wasm32-unknown-unknown" ];
        };
        craneLib = ((crane.mkLib pkgs).overrideToolchain rustToolchainFor).overrideScope (_final: _prev: {
          # The version of wasm-bindgen-cli needs to match the version in Cargo.lock. You
          # can unpin this if your nixpkgs commit contains the appropriate wasm-bindgen-cli version
          inherit (import nixpkgs-for-wasm-bindgen { inherit system; }) wasm-bindgen-cli;
        });

        # When filtering sources, we want to allow assets other than .rs files
        src = lib.cleanSourceWith {
          src = ./.; # The original, unfiltered source
          filter = path: type:
            (lib.hasSuffix "\.html" path) ||
            (lib.hasSuffix "\.scss" path) ||
            # Example of a folder for images, icons, etc
            (lib.hasInfix "/assets/" path) ||
            # Default filter from crane (allow .rs files)
            (craneLib.filterCargoSources path type)
          ;
        };

        commonArgs = {
          inherit src;
          strictDeps = true;

          buildInputs = [
            # Add additional build inputs here
          ] ++ lib.optionals pkgs.stdenv.isDarwin [
            # Additional darwin specific inputs can be set here
            pkgs.libiconv
          ];
        };

        # Wasm packages

        wasmArgs = commonArgs // {
          pname = "trunk-workspace-wasm";
          cargoExtraArgs = "--package=site";
          CARGO_BUILD_TARGET = "wasm32-unknown-unknown";
        };

        cargoArtifactsWasm = craneLib.buildDepsOnly (wasmArgs // {
          doCheck = false;
        });

        mySite = craneLib.buildTrunkPackage (wasmArgs // {
          pname = "trunk-workspace-site";
          cargoArtifacts = cargoArtifactsWasm;
          trunkIndexPath = "site/index.html";
          # The version of wasm-bindgen-cli here must match the one from Cargo.lock.
          wasm-bindgen-cli = pkgs.wasm-bindgen-cli.override {
            version = "0.2.92";
            hash = "sha256-1VwY8vQy7soKEgbki4LD+v259751kKxSxmo/gqE6yV0=";
            cargoHash = "sha256-aACJ+lYNEU8FFBs158G1/JG8sc6Rq080PeKCMnwdpH0=";
          };
        });
        serve-app = pkgs.writeShellScriptBin "serve-app" ''
          ${pkgs.python3Minimal}/bin/python3 -m http.server --directory ${mySite} 8000
        '';
      in
      {
        checks = {
          inherit mySite;
        };
        packages.default = mySite;

        apps.default = flake-utils.lib.mkApp {
          name = "server";
          drv = serve-app;
        };

        devShells.default = craneLib.devShell {
          # Inherit inputs from checks.
          checks = self.checks.${system};

          # Extra inputs can be added here; cargo and rustc are provided by default.
          packages = [
            pkgs.trunk
          ];
        };
      });
}

{
  rust-project = {
    crates = {
      "site" = {
           isTrunkPackage = true;
           extraBuildArgs = {
             wasm-bindgen-cli = …
             trunkIndexPath = "site/index.html";
       };
      "cli" = { … };
      "holodeck" = { … };
    };
  };
}

{
  rust-project.crates."foo" = {
    packages.trunk = { extraBuildArgs = { ... } };
  };
}