Rakefile in x25519-1.0.9 vs Rakefile in x25519-1.0.10

@@ -5,9 +5,11 @@
 require "rake/clean"
 CLEAN.include("**/*.o", "**/*.so", "**/*.bundle", "pkg", "tmp")
 
 require "rake/extensiontask"
 %w[precomputed ref10].each do |provider|
+  next if provider == "precomputed" && RUBY_PLATFORM =~ /arm64-darwin/
+
   Rake::ExtensionTask.new("x25519_#{provider}") do |ext|
     ext.ext_dir = "ext/x25519_#{provider}"
   end
 end