Support darwin

flake.lock

@@ -1,5 +1,23 @@
 {
   "nodes": {
+    "flake-utils": {
+      "inputs": {
+        "systems": "systems"
+      },
+      "locked": {
+        "lastModified": 1731533236,
+        "narHash": "sha256-l0KFg5HjrsfsO/JpG+r7fRrqm12kzFHyUHqHCVpMMbI=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "11707dc2f618dd54ca8739b309ec4fc024de578b",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    },
     "nixpkgs": {
       "locked": {
         "lastModified": 1772773019,
@@ -18,8 +36,24 @@
     },
     "root": {
       "inputs": {
+        "flake-utils": "flake-utils",
         "nixpkgs": "nixpkgs"
       }
+    },
+    "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

@@ -2,30 +2,35 @@
   description = "mkv";
   inputs = {
     nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
+    flake-utils.url = "github:numtide/flake-utils";
   };
   outputs =
-    { self, nixpkgs }:
-    let
-      system = "x86_64-linux";
-      pkgs = import nixpkgs { inherit system; };
-    in
-    {
-      devShells.${system}.default = pkgs.mkShell {
-        packages = [
-          pkgs.rustc
-          pkgs.cargo
-          pkgs.rustfmt
-          pkgs.rust-analyzer
+    { self, nixpkgs, flake-utils }:
+    flake-utils.lib.eachDefaultSystem (system:
+      let
+        pkgs = import nixpkgs { inherit system; };
+        darwinBuildInputs = pkgs.lib.optionals pkgs.stdenv.hostPlatform.isDarwin [
+          pkgs.libiconv
         ];
-      };
-      packages.${system}.default = pkgs.rustPlatform.buildRustPackage {
-        pname = "mkv";
-        version = "0.1.0";
-        cargoLock.lockFile = ./Cargo.lock;
-        src = pkgs.lib.cleanSource ./.;
-        nativeBuildInputs = [ pkgs.pkg-config ];
-        buildInputs = [ pkgs.openssl ];
-        doCheck = false;
-      };
-    };
+      in
+      {
+        devShells.default = pkgs.mkShell {
+          packages = [
+            pkgs.rustc
+            pkgs.cargo
+            pkgs.rustfmt
+            pkgs.rust-analyzer
+          ];
+        };
+        packages.default = pkgs.rustPlatform.buildRustPackage {
+          pname = "mkv";
+          version = "0.1.0";
+          cargoLock.lockFile = ./Cargo.lock;
+          src = pkgs.lib.cleanSource ./.;
+          nativeBuildInputs = [ pkgs.pkg-config ];
+          buildInputs = [ pkgs.openssl ] ++ darwinBuildInputs;
+          doCheck = false;
+        };
+      }
+    );
 }