joplin-desktop: explicitly add darwin to platforms (#447231)

Changed files
+1 -1
pkgs
by-name
jo
joplin-desktop
+1 -1
pkgs/by-name/jo/joplin-desktop/package.nix
···
maintainers = with maintainers; [
fugi
];
-
inherit (electron.meta) platforms;
+
platforms = electron.meta.platforms ++ lib.platforms.darwin;
};
})