id	summary	reporter	owner	description	type	status	priority	milestone	component	version	severity	resolution	keywords	cc	lang	patch	platform
2167	Storable format breaks pmc2c when Perl is upgraded	allison		"Downstream in Debian, the upgrade from Perl 5.10 to 5.12 broke Rakudo compiles, because the installed PMC .dump files were written using the 5.10 version of Storable, and could not be read using the 5.12 version of Storable. The upstream bugs (closed) related to this failure are:

http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=634105

http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=634970

This is solved in the short-term, but in the longer-term, Storable is not a good format for installed, persistent metadata. (It was never intended to be installed, only to be a temporary build-process cache.)

We need to re-examine what metadata pmc2c actually needs for building PMCs that inherit from core Parrot PMCs. I suspect that it's actually much smaller than the current .dump files, and that installing some simple JSON metadata files for the core PMCs would actually be sufficient.

The work on M0 will eventually make this irrelevant, but that work would likely also benefit from some thought about abstracting the metadata needed to inherit from a PMC.
"	RFC	new	normal		pmc2c	3.6.0	medium			pmichaud shockwave cotto{{{