> Not sure why clap isn't std at this point.

The std has stability promises, so it's prudent to not add things prematurely.

Go has the official "flag" package as part of the stdlib, and it's so absolutely terrible that everyone uses pflag, cobra, or urfave/cli instead.

Go's stdlib is a wonderful example of why you shouldn't add things willy-nilly to the stdlib since it's full of weird warts and things you simply shouldn't use.

> and it's so absolutely terrible that everyone uses pflag, ../

This is just social media speak for inconvenient in some cases. I have used flag package in lot of applications. It gets job done and I have had no problem with it.

> since it's full of weird warts and things you simply shouldn't use.

The only software that does not have problem is thats not written yet. This is the standard one should follow then.

Go is also famous for encouraging a culture of keeping down dependency count while exposing a simple to use package manager and ecosystem.