id	summary	reporter	owner	description	type	status	priority	milestone	component	version	severity	resolution	keywords	cc
17576	ruby now requires libyaml	ken@…	ken@…	"I still prefer not to build things I don't have any use for. I've been building ruby since I started to build texlive, but only using it to test the 'match_parens' script as part of my acceptance testing.

Until now I've not needed libyaml ('optional' in the book) although there is a very old ticket [https://bugs.ruby-lang.org/issues/6508] explaining why adding a configure switch for libyaml is problematic.

Just now ruby-3.2.0 failed to build.

The configure script told me that the psych extension could not be installed   and to look in ext/psych/mkmf.log for more details: it failed to find YAML-1.0.

However, it did not apparently error and started to run make. That failed quickly at lib/yaml.rb:3:
{{{
 warning: It seems your ruby installation is missing psych (for YAML output).
To eliminate this warning, please install libyaml and reinstall your ruby.
uh-oh! RDoc had a problem:
cannot load such file -- psych
}}}

There are no references in the configure script to psych, yaml or YAML so it appears that libyaml is now **required**.

My most recent build of ruby was for 3.1.2 where psych and its then yaml files built ok, so this appears to be a recent change."	defect	closed	normal	11.3	BOOK	git	medium	fixed