On 11/13/19 2:02 PM, Joakim Tjernlund wrote: > On Wed, 2019-11-13 at 11:07 -0800, Zac Medico wrote: >> On 11/8/19 9:09 AM, Joakim Tjernlund wrote: >>> On Fri, 2019-11-08 at 01:57 +0100, Joakim Tjernlund wrote: >>>> I am looking for a way to seed emerge with an older pkg db so emerge can >>>> calculate >>>> which packages needs to be rebuild/upgraded in order to get to the same >>>> state as the system pkg db, >>>> Is that possible? >>>> >>>> Also, is there some tool that allows med to copy just files needed for a >>>> profile? >>>> Something like "cp" /etc/portage/make.profile /my/destination >>>> >>> >>> portage-utils has variables Q_VDB and Q_EDB which allows qmerge to use >>> different VDBs/EDBs >>> Does portage have something similar? >> >> No, nothing like either of those things. >> >> However, if you want to operate on an old system then the usual >> recommendation is to unpack a stage3 and bind mount the old system root >> into the stage3 so that you can chroot into the stage3 and run something >> like this: >> >> emerge --root /mnt/old-system portage > > Nice trick, but not quite what I want to do. > Simply described I build binary pkgs which I tar together, transfer to an > remote embedded system > and install these using qmerge(from portage-utils) > > The problem is how make sure I got just the pkgs I need. > > I build binary pkgs on the same HW using emerge and this is performed over > time and > when release comes I package those bin pkgs and at that time I need some way > to make sure > I got what the right pkgs. I figured I could use emerge to generate the > difference > for me and the compare that list with the bin pkgs I have. > > Maybe there is a simpler way to do this? I have the old VDB and the new VDB > I need this list to be in dependency order too.
If you have a copy of the old VDB located at /mnt/old-root/var/db/pkg then you can just do something like this to see what packages it will install: emerge -pv --usepkgonly --root /mnt/old-root <atom> [atom]... Also if you have the old portage config located at /mnt/old-root/etc/portage then you can add --config-root /mnt/old-root to your emerge options. -- Thanks, Zac
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