Adding a field to metadata, that holds the aproximate installation size for a typical installation. This would help a lot on space constrained systems. Normally the size should not differ much with different use flags, since use flags will mostly include other packages with own size information. Size could easily be determined from diskfree (df) before and after installation when cleaning temp and distfiles or putting them on different partitions. Reproducible: Always Steps to Reproduce:
Any proposed changes to metadata need to be discussed on the gentoo-portage mailing list first, then later on the gentoo-dev if deemed necessary. In this case it would probably also be necessary to discuss it there as such a change would affect every single maintainer. USE flags, Compile flags , file systems, block sizes etc.. can all have a major affect on the installed sizes.
