James Olin Oden wrote:
Now along this sortid trail of email messages, there was mention that some packages no longer build with the current compilers. Is that not the case, or was that a mis-statement?
If you peruse the Fedora ftp repository (or via http) you'll likely find some packages present with the .fcN dist tag in them where N < current release of Fedora. That was true for Fedora 8, and I believe Fedora 10 as well. Not sure if it is true for Fedora 11/rawhide currently or not however.
Because, it sounds Fedora at this point is self-hosting by that description, and if RedHat follows that practice it too will be self hosting.
It is a good process for building clean rpms, at least cleaner than prior methods. It can not guarantee self hosting however because once any rpm is built - if any of its dependencies are rebuilt, if the compiler or toolchain changes, etc. - it is possible any of those changes could cause any number of rpms previously built to fail. As such, in order to guarantee self hosting, if say... gcc were rebuilt, then the entire repository would need to be rebuilt, and as any rpms were built - anything that used them as dependencies would need to be rebuilt again. There are packages that have build loops, so they might need to be rebuilt in a loop a few times to ensure they still build.
I'm not saying this shouldn't be done, but it is a large amount of potential package churn to say the least. It would be nice however if mass rebuilds were done more often during the OS development phase, and failures were mandatorily fixed. That would lead closer towards self hosting becoming more of a reality.
I don't think the process should be continued post-final though as it would churn excessive unnecessary updates to end users.