release handling

[Sean Hinde]

> Sean Hinde <Sean.Hinde@REDACTED> wrote:
> > First I hacked systools:make_tar/1 to get it to make a tar file just
> > containing the new SNMP version ignoring all the dependencies.

Martin:
> I think it would be great with an option to exclude all unchanged
> apps.  If you have added such an option, and you'd like to share it, I
> think it should be included in the next OTP release.

It wasn't nearly so nice - I just copied systools.erl and mangled it by
deleting enough that it ignored enough dependency checks and extraneous
stuff that it just provided the application in a tar file. I agree it would
be very nice to have an option to ignore application dependencies. I'll try
to find some time to analyse the havoc I caused to see if it can be made
into a patch...

It also doesn't look too hard to come up with an init:restart(Rel_name).
which makes the new release permanent after some minimal checking that the
files are there before restarting. It's a bit scary playing about with init
though!!

Sean



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