enable calibre on macos through homebrew

broken build from nix on macos

platforms/home-manager/modules/nmasur/presets/programs/calibre.nix

@@ -14,9 +14,14 @@ in
   options.nmasur.presets.programs.calibre.enable = lib.mkEnableOption "Calibre e-book manager";
 
   config = lib.mkIf cfg.enable {
-    home.packages = [ pkgs.calibre ];
+    home.packages = lib.mkIf pkgs.stdenv.isLinux [ pkgs.calibre ];
     home.sessionVariables = {
       CALIBRE_USE_DARK_PALETTE = 1;
     };
+
+    home.file.".Brewfile".text = lib.mkIf pkgs.stdenv.isDarwin /* homebrew */ ''
+      cask "calibre" # Nix package broken on macOS
+    '';
+
   };
 }

platforms/home-manager/modules/nmasur/profiles/darwin-base.nix

@@ -25,6 +25,7 @@ in
         menubar.enable = lib.mkDefault true;
       };
       programs = {
+        calibre.enable = lib.mkDefault true;
         fish-darwin.enable = lib.mkDefault true;
         homebrew.enable = lib.mkDefault true;
         nixpkgs-darwin.enable = lib.mkDefault true;