On Thu, Nov 22, 2018 at 06:21:01PM +0000, Roger Leigh wrote: > > It would be possible to share the ports tree on a FreeBSD system, since it's > mostly self-contained, so long as it's read-only (it has unshared data in > /var including the package database, so can't be read-write). But this is > not reasonable with dpkg, by design. The packages are putting data in / and > /usr, as well as /var. You cannot just export /usr without getting into an > inconsistent and incoherent mess.
The only way I can see for BSD to have a package system with a separate and shared /usr is (1) to absolutely forbid any dependencies from anything on /usr from anything in the root file system, (2) No package to have files in both /usr and the root file system (3) Split the package data base so that packages in /usr are tracked in /usr and that packages in the root file system are tracked in the root file system. (4) Make sure that you don't need anything in /usr to to packaage maintenance on the root file system. Then upgrading the root file system can be done independently of upgrading /usr. I suspect that this may be too severe a set of restrictions for BSD to tolerate, and as you mention, for Debian that ship has sailed long ago. -- hendrik _______________________________________________ Dng mailing list Dng@lists.dyne.org https://mailinglists.dyne.org/cgi-bin/mailman/listinfo/dng
