feat(nix): improves flake to work with vs code

flake.lock

@@ -1,6 +1,40 @@
 {
   "nodes": {
+    "flake-utils": {
+      "inputs": {
+        "systems": "systems"
+      },
+      "locked": {
+        "lastModified": 1710146030,
+        "narHash": "sha256-SZ5L6eA7HJ/nmkzGG7/ISclqe6oZdOZTNoesiInkXPQ=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "b1d9ab70662946ef0850d488da1c9019f3a9752a",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    },
     "nixpkgs": {
+      "locked": {
+        "lastModified": 1724748588,
+        "narHash": "sha256-NlpGA4+AIf1dKNq76ps90rxowlFXUsV9x7vK/mN37JM=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "a6292e34000dc93d43bccf78338770c1c5ec8a99",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixpkgs-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "nixpkgs_2": {
       "locked": {
         "lastModified": 1718428119,
         "narHash": "sha256-WdWDpNaq6u1IPtxtYHHWpl5BmabtpmLnMAx0RdJ/vo8=",
@@ -18,16 +52,14 @@
     },
     "root": {
       "inputs": {
-        "nixpkgs": [
+        "flake-utils": "flake-utils",
-          "rust-overlay",
+        "nixpkgs": "nixpkgs",
-          "nixpkgs"
-        ],
         "rust-overlay": "rust-overlay"
       }
     },
     "rust-overlay": {
       "inputs": {
-        "nixpkgs": "nixpkgs"
+        "nixpkgs": "nixpkgs_2"
       },
       "locked": {
         "lastModified": 1724811750,
@@ -42,6 +74,21 @@
         "repo": "rust-overlay",
         "type": "github"
       }
+    },
+    "systems": {
+      "locked": {
+        "lastModified": 1681028828,
+        "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
+        "owner": "nix-systems",
+        "repo": "default",
+        "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-systems",
+        "repo": "default",
+        "type": "github"
+      }
     }
   },
   "root": "root",

flake.nix

@@ -1,67 +1,42 @@
 {
   description = "Example Rust development environment for Zero to Nix";
 
-  # Flake inputs
   inputs = {
-    # nixpkgs.url = "https://flakehub.com/f/NixOS/nixpkgs/*.tar.gz";
+    nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
-    rust-overlay.url = "github:oxalica/rust-overlay"; # A helper for Rust + Nix
+    rust-overlay.url = "github:oxalica/rust-overlay";
-    # cargo2nix.url = "github:cargo2nix/cargo2nix/";
+    flake-utils.url = "github:numtide/flake-utils";
-    nixpkgs.follows = "rust-overlay/nixpkgs";
   };
 
-  # Flake outputs
+  outputs = { self, nixpkgs, rust-overlay, flake-utils, ... }:
-  outputs = { self, nixpkgs, rust-overlay}:
+    flake-utils.lib.eachDefaultSystem (system:
       let
-      # Overlays enable you to customize the Nixpkgs attribute set
+        overlays = [ (import rust-overlay) ];
-      overlays = [
+        pkgs = import nixpkgs {
-        # Makes a `rust-bin` attribute available in Nixpkgs
+          inherit system overlays;
-        (import rust-overlay)
+        };
-        # Provides a `rustToolchain` attribute for Nixpkgs that we can use to
+        rustToolchain = pkgs.rust-bin.nightly.latest.default.override {
-        # create a Rust environment
+          extensions = [ "rust-src" "rust-analyzer" "clippy" "rustfmt" ];
-        (self: super: {
+          targets = [ "x86_64-unknown-linux-gnu" "wasm32-unknown-unknown" ];
-          rustToolchain = super.rust-bin.stable.latest.default;
+        };
-        })
-      ];
-
-      # Systems supported
-      allSystems = [
-        "x86_64-linux" # 64-bit Intel/AMD Linux
-        "aarch64-linux" # 64-bit ARM Linux
-        "x86_64-darwin" # 64-bit Intel macOS
-        "aarch64-darwin" # 64-bit ARM macOS
-      ];
-
-      # rustTarget = nixpkgs.pkgs.rust-bin.selectLatestNightlyWith (toolchain: toolchain.default.override {
-      #       extensions = [ "rust-src" "rustup" "rust-analyzer" "rust-std" ];
-      #       targets = [ "x86_64-unknown-linux-gnu" "wasm32-unknown-unknown" ];
-      #     });
-
-      # Helper to provide system-specific attributes
-      forAllSystems = f: nixpkgs.lib.genAttrs allSystems (system: f {
-        pkgs = import nixpkgs { inherit overlays system; };
-      });
       in
       {
-      # Development environment output
+        devShells.default = pkgs.mkShell {
-      devShells = forAllSystems ({ pkgs }: {
+          buildInputs = with pkgs; [
-        default = pkgs.mkShell {
-          buildInputs = [
-            pkgs.cargo-shuttle
-          ];
-          # shellHook = ''
-          #   rustup target add wasm32-unknown-unknown
-          # '';
-          # The Nix packages provided in the environment
-          packages = (with pkgs; [
-            # The package provided by our custom overlay. Includes cargo, Clippy, cargo-fmt,
-            # rustdoc, rustfmt, and other tools.
-            rust-analyzer
-            clippy
-            trunk
-            tailwindcss
             rustToolchain
-          ]) ++ pkgs.lib.optionals pkgs.stdenv.isDarwin (with pkgs; [ libiconv ]);
+            trunk
-        };
+            clippy
-      });
+            tailwindcss
+            cargo-shuttle
+          ];
+
+          shellHook = ''
+            export PATH=${rustToolchain}/bin:$PATH
+            export RUSTC_VERSION=$(rustc --version)
+            export RUST_SRC_PATH="${rustToolchain}/lib/rustlib/src/rust/library"
+          '';
+
+          packages = pkgs.lib.optionals pkgs.stdenv.isDarwin (with pkgs; [ libiconv ]);
         };
       }
+    );
+}