chore: update template

Cargo.toml

@@ -1,6 +1,5 @@
 [package]
-authors = ["Sridhar Ratnakumar <srid@srid.ca>"]
+authors = ["Toby <toby@tobot.dev>"]
 edition = "2021"
-# If you change the name here, you must also do it in flake.nix (and run `cargo generate-lockfile` afterwards)
 name = "rust-nix-template"
 version = "0.1.0"

flake.lock

@@ -1,64 +1,33 @@
 {
   "nodes": {
-    "flake-parts": {
+    "fenix": {
       "inputs": {
-        "nixpkgs-lib": "nixpkgs-lib"
+        "nixpkgs": [
+          "nixpkgs"
+        ],
+        "rust-analyzer-src": "rust-analyzer-src"
       },
       "locked": {
-        "lastModified": 1696343447,
+        "lastModified": 1714631076,
-        "narHash": "sha256-B2xAZKLkkeRFG5XcHHSXXcP7To9Xzr59KXeZiRf4vdQ=",
+        "narHash": "sha256-at4+1R9gx3CGvX0ZJo9GwDZyt3RzOft7qDCTsYHjI4M=",
-        "owner": "hercules-ci",
+        "owner": "nix-community",
-        "repo": "flake-parts",
+        "repo": "fenix",
-        "rev": "c9afaba3dfa4085dbd2ccb38dfade5141e33d9d4",
+        "rev": "22a9eb3f20dd340d084cee4426f386a90b1351ca",
         "type": "github"
       },
       "original": {
-        "owner": "hercules-ci",
+        "owner": "nix-community",
-        "repo": "flake-parts",
+        "repo": "fenix",
         "type": "github"
       }
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1704626572,
+        "lastModified": 1714635257,
-        "narHash": "sha256-VwRTEKzK4wSSv64G+g3RLF3t6yBHrhR2VK3kZ5UWisU=",
+        "narHash": "sha256-4cPymbty65RvF1DWQfc+Bc8B233A1BWxJnNULJKQ1EY=",
         "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "24fe8bb4f552ad3926274d29e083b79d84707da6",
+        "rev": "63c3a29ca82437c87573e4c6919b09a24ea61b0f",
-        "type": "github"
-      },
-      "original": {
-        "owner": "nixos",
-        "ref": "nixos-unstable",
-        "repo": "nixpkgs",
-        "type": "github"
-      }
-    },
-    "nixpkgs-lib": {
-      "locked": {
-        "dir": "lib",
-        "lastModified": 1696019113,
-        "narHash": "sha256-X3+DKYWJm93DRSdC5M6K5hLqzSya9BjibtBsuARoPco=",
-        "owner": "NixOS",
-        "repo": "nixpkgs",
-        "rev": "f5892ddac112a1e9b3612c39af1b72987ee5783a",
-        "type": "github"
-      },
-      "original": {
-        "dir": "lib",
-        "owner": "NixOS",
-        "ref": "nixos-unstable",
-        "repo": "nixpkgs",
-        "type": "github"
-      }
-    },
-    "nixpkgs_2": {
-      "locked": {
-        "lastModified": 1695644571,
-        "narHash": "sha256-asS9dCCdlt1lPq0DLwkVBbVoEKuEuz+Zi3DG7pR/RxA=",
-        "owner": "nixos",
-        "repo": "nixpkgs",
-        "rev": "6500b4580c2a1f3d0f980d32d285739d8e156d92",
         "type": "github"
       },
       "original": {
@@ -70,37 +39,40 @@
     },
     "root": {
       "inputs": {
-        "flake-parts": "flake-parts",
+        "fenix": "fenix",
         "nixpkgs": "nixpkgs",
-        "systems": "systems",
         "treefmt-nix": "treefmt-nix"
       }
     },
-    "systems": {
+    "rust-analyzer-src": {
+      "flake": false,
       "locked": {
-        "lastModified": 1681028828,
+        "lastModified": 1714572655,
-        "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
+        "narHash": "sha256-xjD8vmit0Nz1qaSSSpeXOK3saSvAZtOGHS2SHZE75Ek=",
-        "owner": "nix-systems",
+        "owner": "rust-lang",
-        "repo": "default",
+        "repo": "rust-analyzer",
-        "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
+        "rev": "cfce2bb46da62950a8b70ddb0b2a12332da1b1e1",
         "type": "github"
       },
       "original": {
-        "owner": "nix-systems",
+        "owner": "rust-lang",
-        "repo": "default",
+        "ref": "nightly",
+        "repo": "rust-analyzer",
         "type": "github"
       }
     },
     "treefmt-nix": {
       "inputs": {
-        "nixpkgs": "nixpkgs_2"
+        "nixpkgs": [
+          "nixpkgs"
+        ]
       },
       "locked": {
-        "lastModified": 1697388351,
+        "lastModified": 1714058656,
-        "narHash": "sha256-63N2eBpKaziIy4R44vjpUu8Nz5fCJY7okKrkixvDQmY=",
+        "narHash": "sha256-Qv4RBm4LKuO4fNOfx9wl40W2rBbv5u5m+whxRYUMiaA=",
         "owner": "numtide",
         "repo": "treefmt-nix",
-        "rev": "aae39f64f5ecbe89792d05eacea5cb241891292a",
+        "rev": "c6aaf729f34a36c445618580a9f95a48f5e4e03f",
         "type": "github"
       },
       "original": {

flake.nix

@@ -1,62 +1,84 @@
 {
+  description = "A Nix-flake-based Rust development environment";
+
   inputs = {
     nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";
-    flake-parts.url = "github:hercules-ci/flake-parts";
-    systems.url = "github:nix-systems/default";
 
-    # Dev tools
+    treefmt-nix = {
-    treefmt-nix.url = "github:numtide/treefmt-nix";
+      url = "github:numtide/treefmt-nix";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
+
+    fenix = {
+      url = "github:nix-community/fenix";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
   };
 
-  outputs = inputs:
+  outputs =
-    inputs.flake-parts.lib.mkFlake { inherit inputs; } {
+    {
-      systems = import inputs.systems;
+      self,
-      imports = [
+      nixpkgs,
-        inputs.treefmt-nix.flakeModule
+      treefmt-nix,
+      fenix,
+    }:
+    let
+      supportedSystems = [
+        "x86_64-linux"
+        "aarch64-linux"
+        "x86_64-darwin"
+        "aarch64-darwin"
       ];
-      perSystem = { config, self', pkgs, lib, system, ... }:
+      forEachSupportedSystem =
-        let
+        f:
-          cargoToml = builtins.fromTOML (builtins.readFile ./Cargo.toml);
+        nixpkgs.lib.genAttrs supportedSystems (
-          nonRustDeps = [
+          system:
-          ];
+          f (
-          rust-toolchain = pkgs.symlinkJoin {
+            let
-            name = "rust-toolchain";
+              pkgs = import nixpkgs { inherit system; };
-            paths = [ pkgs.rustc pkgs.cargo pkgs.rust-analyzer pkgs.rustPlatform.rustcSrc ];
+              fenix' = (import fenix { inherit system pkgs; });
-          };
+              toolchain = fenix'.complete.withComponents (
-        in
+                (builtins.fromTOML (builtins.readFile ./rust-toolchain.toml)).toolchain.components
+              );
+            in
+            {
+              inherit pkgs toolchain;
+            }
+          )
+        );
+    in
+    {
+      formatter = forEachSupportedSystem (
+        { pkgs, ... }: (treefmt-nix.lib.evalModule pkgs ./treefmt.nix).config.build.wrapper
+      );
+      devShells = forEachSupportedSystem (
+        { pkgs, toolchain }:
         {
-          # Rust package
+          default = pkgs.mkShell {
-          packages.default = pkgs.rustPlatform.buildRustPackage {
+            nativeBuildInputs = [ toolchain ];
-            inherit (cargoToml.package) name version;
+            buildInputs = [ toolchain ];
-            src = ./.;
-            cargoLock.lockFile = ./Cargo.lock;
           };
-
+        }
-          # Rust dev environment
+      );
-          devShells.default = pkgs.mkShell {
+      packages = forEachSupportedSystem (
-            inputsFrom = [
+        { pkgs, toolchain }:
-              config.treefmt.build.devShell
+        {
-            ];
+          default = (
-            shellHook = ''
+            let
-              # For rust-analyzer 'hover' tooltips to work.
+              manifest = (pkgs.lib.importTOML ./Cargo.toml).package;
-              export RUST_SRC_PATH=${pkgs.rustPlatform.rustLibSrc}
+              rustPlatform = pkgs.makeRustPlatform {
-            '';
+                cargo = toolchain;
-            buildInputs = nonRustDeps;
+                rustc = toolchain;
-            nativeBuildInputs = [
+              };
-              rust-toolchain
+            in
-            ];
+            rustPlatform.buildRustPackage {
-            RUST_BACKTRACE = 1;
+              pname = manifest.name;
-          };
+              version = manifest.version;
-
+              cargoLock.lockFile = ./Cargo.lock;
-          # Add your auto-formatters here.
+              src = pkgs.lib.cleanSource ./.;
-          # cf. https://numtide.github.io/treefmt/
+            }
-          treefmt.config = {
+          );
-            projectRootFile = "flake.nix";
+        }
-            programs = {
+      );
-              nixpkgs-fmt.enable = true;
-              rustfmt.enable = true;
-            };
-          };
-        };
     };
 }

rust-toolchain.toml

@@ -0,0 +1,3 @@
+[toolchain]
+channel = "stable"
+components = ["rustfmt", "cargo", "rustc", "rust-src"]

treefmt.nix

@@ -0,0 +1,8 @@
+{ ... }:
+{
+  projectRootFile = "flake.nix";
+  programs = {
+    nixfmt-rfc-style.enable = true;
+    rustfmt.enable = true;
+  };
+}