feat(nix): darwin support

flake.nix

@@ -3,30 +3,52 @@
 
   inputs = {
     nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
+    crane.url = "github:ipetkov/crane";
   };
 
   outputs = {
     self,
     nixpkgs,
+    crane,
   }: let
-    # Spotify only ships on this so it's fine
-    system = "x86_64-linux";
-    pkgs = import nixpkgs {
-      inherit system;
-      config.allowUnfree = true;
-    };
+    systems = [
+      "x86_64-linux"
+      "aarch64-darwin"
+    ];
+    forEachSystem = nixpkgs.lib.genAttrs systems;
+    pkgsForSystem = system:
+      import nixpkgs {
+        inherit system;
+        config.allowUnfree = true;
+      };
   in {
-    devShells.${system} = {
-      default = pkgs.callPackage ./nix/shell.nix {inherit self;};
-    };
+    devShells = forEachSystem (system: {
+      default = (pkgsForSystem system).callPackage ./nix/shell.nix {
+        inherit self;
+      };
+    });
 
-    packages.${system} = {
-      cef = pkgs.callPackage ./nix/cef.nix {};
-      extendify-native = pkgs.callPackage ./nix/native.nix {inherit self;};
-      spotify-extendify = pkgs.callPackage ./nix/spotify-extendify.nix {inherit self;};
-      default = self.packages.${system}.spotify-extendify;
-    };
+    packages = forEachSystem (
+      system: let
+        pkgs = pkgsForSystem system;
+        craneLib = crane.mkLib pkgs;
+      in {
+        cef = pkgs.callPackage ./nix/cef.nix {};
+        extendify-native = pkgs.callPackage ./nix/native.nix {
+          inherit self craneLib;
+        };
+        spotify-extendify = pkgs.callPackage ./nix/spotify-extendify.nix {
+          inherit self;
+        };
+        default = self.packages.${system}.spotify-extendify;
+      }
+    );
 
-    formatter.${system} = pkgs.callPackage ./nix/fmt.nix {};
+    formatter = forEachSystem (
+      system: let
+        pkgs = pkgsForSystem system;
+      in
+        pkgs.callPackage ./nix/fmt.nix {}
+    );
   };
 }

nix/cef.nix

@@ -1,10 +1,50 @@
 {
   cef-binary,
+  fetchurl,
   stdenv,
-}:
-cef-binary.override {
+  stdenvNoCC,
+}: let
+  selectSystem = attrs:
+    attrs.${stdenv.hostPlatform.system} or (throw "Unsupported system ${stdenv.hostPlatform.system}");
+
+  platformString = selectSystem {
+    x86_64-linux = "linux64";
+    aarch64-darwin = "macosarm64";
+  };
+
   version = "144.0.11";
   gitRevision = "e135be2";
   chromiumVersion = "144.0.7559.97";
-  srcHashes.${stdenv.hostPlatform.system} = "sha256-almKJ18g//Wi2CDRX1yibODvR6TF0DlUl1EnDNlIHBY=";
-}
+  srcHashes = {
+    x86_64-linux = "sha256-almKJ18g//Wi2CDRX1yibODvR6TF0DlUl1EnDNlIHBY=";
+    aarch64-darwin = "sha256-Q94fht0yAkwAIqv29I1ZkpaS7WiYvJIcHWFcmBSvqHw=";
+  };
+in
+  if stdenv.hostPlatform.isLinux
+  then
+    cef-binary.override {
+      inherit version gitRevision chromiumVersion srcHashes;
+    }
+  else if stdenv.hostPlatform.system == "aarch64-darwin"
+  then
+    stdenvNoCC.mkDerivation {
+      name = "darwin-cef";
+
+      src = fetchurl {
+        url = "https://cef-builds.spotifycdn.com/cef_binary_${version}+g${gitRevision}+chromium-${chromiumVersion}_${platformString}_minimal.tar.bz2";
+        hash = srcHashes.${stdenv.hostPlatform.system};
+      };
+
+      dontBuild = true;
+      dontConfigure = true;
+
+      unpackPhase = ''
+        tar --strip-components=1 -xjf $src
+      '';
+
+      installPhase = ''
+        mkdir -p $out
+        cp -r ./* $out/
+      '';
+    }
+  else throw "Unsupported system: ${stdenv.hostPlatform.system}"

nix/native.nix

@@ -1,50 +1,63 @@
 {
-  rustPlatform,
   clang,
   pkg-config,
   openssl,
   llvmPackages,
   lib,
   self,
   stdenv,
-}:
-rustPlatform.buildRustPackage {
-  pname = "extendify-native";
-  version = (lib.importTOML ../crates/extendify-native/Cargo.toml).package.version;
+  craneLib,
+}: let
+  commonArgs = {
+    pname = "extendify-native";
+    version = (lib.importTOML ../crates/extendify-native/Cargo.toml).package.version;
+    src = lib.fileset.toSource {
+      root = ../.;
+      fileset = lib.fileset.unions [
+        ../crates
+        ../Cargo.lock
+        ../Cargo.toml
+      ];
+    };
 
-  src = lib.fileset.toSource {
-    root = ../.;
-    fileset = lib.fileset.unions [
-      ../crates
-      ../Cargo.lock
-      ../Cargo.toml
+    strictDeps = true;
+
+    nativeBuildInputs = [
+      clang
+      pkg-config
     ];
-  };
 
-  cargoLock = {
-    lockFile = ../Cargo.lock;
-    allowBuiltinFetchGit = true;
+    buildInputs = [
+      openssl
+    ];
   };
 
-  nativeBuildInputs = [
-    clang
-    pkg-config
-  ];
+  cargoArtifacts = craneLib.buildDepsOnly (
+    commonArgs
+    // {
+      name = "${commonArgs.pname}-deps";
+    }
+  );
+in
+  craneLib.buildPackage (
+    commonArgs
+    // {
+      inherit cargoArtifacts;
 
-  buildInputs = [
-    openssl
-  ];
+      env = {
+        LIBCLANG_PATH = "${llvmPackages.libclang.lib}/lib";
+        CEF_PATH = self.packages.${stdenv.hostPlatform.system}.cef;
+      };
 
-  env = {
-    LIBCLANG_PATH = "${llvmPackages.libclang.lib}/lib";
-    CEF_PATH = self.packages.${stdenv.hostPlatform.system}.cef;
-  };
-
-  meta = {
-    homepage = "https://github.com/extendify-mod/extendify";
-    # wtf is the license
-    # license = lib.licenses.gpl3;
-    maintainers = [lib.maintainers.fazzi];
-    platforms = ["x86_64-linux"];
-  };
-}
+      meta = {
+        homepage = "https://github.com/extendify-mod/extendify";
+        # wtf is the license
+        # license = lib.licenses.gpl3;
+        maintainers = [lib.maintainers.fazzi];
+        platforms = [
+          "x86_64-linux"
+          "aarch64-darwin"
+        ];
+      };
+    }
+  )

nix/spotify-extendify.nix

@@ -5,30 +5,42 @@
   makeWrapper,
   self,
   lib,
-}:
-symlinkJoin {
-  name = "spotify-extendify";
-  inherit (spotify) version;
+}: let
+  exe =
+    if stdenv.isDarwin
+    then "Applications/Spotify.app/MacOS/Spotify"
+    else "bin/spotify";
+  preloadVar =
+    if stdenv.isDarwin
+    then "DYLD_INSERT_LIBRARIES"
+    else "LD_PRELOAD";
+in
+  symlinkJoin {
+    name = "spotify-extendify";
+    inherit (spotify) version;
 
-  paths = [
-    spotify
-    self.packages.${stdenv.hostPlatform.system}.extendify-native
-  ];
+    paths = [
+      spotify
+      self.packages.${stdenv.hostPlatform.system}.extendify-native
+    ];
 
-  buildInputs = [makeWrapper];
+    buildInputs = [makeWrapper];
 
-  postBuild = ''
-    wrapProgram $out/bin/spotify \
-      --set LD_PRELOAD $out/lib/libextendify_native.so
-  '';
+    postBuild = ''
+      wrapProgram $out/${exe} \
+        --set ${preloadVar} $out/lib/libextendify_native.so
+    '';
 
-  meta = {
-    mainProgram = "spotify";
-    description = spotify.meta.description + "(patched with Extendify)";
-    homepage = "https://github.com/extendify-mod/extendify";
-    # wtf is the license
-    # license = lib.licenses.gpl3;
-    maintainers = [lib.maintainers.fazzi];
-    platforms = ["x86_64-linux"];
-  };
-}
+    meta = {
+      mainProgram = "spotify";
+      description = spotify.meta.description + "(patched with Extendify)";
+      homepage = "https://github.com/extendify-mod/extendify";
+      # wtf is the license
+      # license = lib.licenses.gpl3;
+      maintainers = [lib.maintainers.fazzi];
+      platforms = [
+        "x86_64-linux"
+        "aarch64-darwin"
+      ];
+    };
+  }