Do we record which OS we were built/installed on?

[Joshua Root]

On 2013-10-26 09:16 , Daniel J. Luke wrote:
> On Oct 25, 2013, at 5:52 PM, Rainer Müller <raimue at macports.org> wrote:
>> On 2013-10-25 23:33, Daniel J. Luke wrote:
>>> If not, maybe we should (so we can print out something like "bad user, no cookie: https://trac.macports.org/wiki/Migration", or so we can force a selfupdate rebuild? :) )
>>
>> We already have that in the registry. You can see the platform and arch
>> with the command 'port -v installed' for each port.
> 
> yeah, but for this, I care about the OS that base was built/installed on.
> 
> Right now, doing upgrade OS + port -f selfupdate + port upgrade outdated mostly works.
> 
> It would be nice for end users if upgrade OS + run port = port saying 'you need to selfupdate' and have users selfupdate (ideally without -f). I might try to make some time to work up a patch, but was just curious if we keep the build/install OS version for base somewhere.

Yes, it would be a nice enhancement to record the platform base was
configured on and at least print a warning if it doesn't match.

Unfortunately the Migration instructions have good reasons for being
written the way they are, as -f selfupdate + upgrade outdated doesn't
always succeed.

- Josh