Get working nix environment for this repo

Author: skeet70

.envrc

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+use flake

flake.lock

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+{
+  inputs = {
+    flake-utils.url = "github:numtide/flake-utils";
+    rust-overlay.url = "github:oxalica/rust-overlay";
+  };
+
+  outputs = { self, nixpkgs, flake-utils, rust-overlay }:
+    flake-utils.lib.eachDefaultSystem (system:
+      let
+        overlays = [ (import rust-overlay) ];
+        pkgs = import nixpkgs { inherit system overlays; };
+        rusttoolchain =
+          pkgs.rust-bin.fromRustupToolchainFile ./rust-toolchain.toml;
+        # wasm-bindgen = pkgs.rustPlatform.buildRustPackage rec {
+        #   pname = "wasm-bindgen";
+        #   version = "0.2.93";
+
+        #   nativeBuildInputs = with pkgs; [ pkg-config ];
+
+        #   src = pkgs.fetchCrate {
+        #     inherit pname version;
+        #     hash = "sha256-LatHkqF6y+XtY2S/6KJWOjmkB5NcKKfmrhEWmAACLMM=";
+        #   };
+
+        #   cargoLock.lockFile = ./wasm-bindgen-Cargo.lock;
+        #   cargoLock.outputHashes = {
+        #     "raytracer-0.1.0" = "sha256-k6emdBDunYK4pUxrwJCbm57LzICj+q4bRAJ/XJ0zsg0=";
+        #     "weedle-0.13.0" = "sha256-S/AzZmEPamYt0vT6eM8fxnZmXWXwV1DLxVlLIYemZYc=";
+        #   };
+        #   cargoPatches = [
+        #     ./wasm-bindgen-Cargo.lock
+        #   ];
+
+        #   cargoHash = "";
+        # };
+      in
+      {
+        devShell = pkgs.mkShell {
+          buildInputs = with pkgs; [
+            nodejs-18_x
+            protobuf
+            (yarn.override { nodejs = nodejs-18_x; })
+            rusttoolchain
+            pkg-config
+            wasm-bindgen-cli
+          ];
+        };
+      });
+}

flake.nix

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+[toolchain]
+profile = "default"
+channel = "1.80.0"
+components = ["rust-src", "rust-analyzer"]
+targets = [ "wasm32-unknown-unknown" ]