[ruby-talk:444557] Re: Can't gem install websocket-driver on Ubuntu 22.04

I see you already fixed your issue by installing clang and using that to build the gem. When you installed ruby with rvm did you build from source or install a binary? "By default RVM will try to download binary ruby package instead of compiling. If such package is not available normal compilation will be performed." I don't know which compiler they use for the prebuilt binary. Something like this may shed some light: ruby -rrbconfig -e 'puts RbConfig::CONFIG["CC"]'