Installing Jessie on PowerMac G4 (32 bit) -- expired key

["Rick Thomas" <rick.thomas@pobox.com>]

I need to install Jessie powerpc (32-bit) on a G4 powermac.  (And before you ask, yes it needs to be Jessie – just for a couple of months.  Then I will be able to install Adrian’s Sid from Ports.)  But I’m running up against some roadblocks.  Any help will be greatly appreciated!

When the installer gets to the part where I choose a package repository, I choose to enter the name manually as “archive.debian.org”.  But that fails because it wants the dist to be “oldoldstable”, which doesn’t exist on the archive repo.  If I could make it use “jessie” instead, things would work fine, but I don’t know how to tell the installer to do that.

So my first question is: Does anybody know how to force the dist name to be something other than “oldoldstable”?

OK… I gave up and chose not to specify a package repository.  The install runs to completion with a very minimal configuration.  It does that and reboots fine.  Then I log in on the console and edit the sources.list file to look like this:

deb http://archive.debian.org/debian/ jessie main non-free contrib

Then, when I do  “apt update” I get this:

root@grey:~# apt update

Ign http://archive.debian.org jessie InRelease

Get:1 http://archive.debian.org jessie Release.gpg [2420 B]

Hit http://archive.debian.org jessie Release

Ign http://archive.debian.org jessie Release

Ign http://archive.debian.org jessie/main powerpc Packages/DiffIndex

Ign http://archive.debian.org jessie/non-free powerpc Packages/DiffIndex

Ign http://archive.debian.org jessie/contrib powerpc Packages/DiffIndex

Hit http://archive.debian.org jessie/contrib Translation-en

Hit http://archive.debian.org jessie/main Translation-en

Hit http://archive.debian.org jessie/non-free Translation-en

Hit http://archive.debian.org jessie/main powerpc Packages

Hit http://archive.debian.org jessie/non-free powerpc Packages

Hit http://archive.debian.org jessie/contrib powerpc Packages

Fetched 2420 B in 14s (165 B/s)                                                                                                                                            

Reading package lists... Done

Building dependency tree       

Reading state information... Done

All packages are up to date.

W: GPG error: http://archive.debian.org jessie Release: The following signatures were invalid: KEYEXPIRED 1587841717

If I ignore the warning and do “apt install exim4.doc-html” I get this:

root@grey:~# apt install exim4.doc-html

Reading package lists...

Building dependency tree...

Reading state information...

The following NEW packages will be installed:

  exim4-doc-html

0 upgraded, 1 newly installed, 0 to remove and 0 not upgraded.

Need to get 0 B/464 kB of archives.

After this operation, 3354 kB of additional disk space will be used.

WARNING: The following packages cannot be authenticated!

  exim4-doc-html

Install these packages without verification? [y/N]

If I take the default (“N”) the install fails.  So I choose “Y”, and get:

Install these packages without verification? [y/N] y

Selecting previously unselected package exim4-doc-html.

(Reading database ... 22481 files and directories currently installed.)

Preparing to unpack .../exim4-doc-html_4.84-1_all.deb ...

Unpacking exim4-doc-html (4.84-1) ...

Setting up exim4-doc-html (4.84-1) ...

root@grey:~# 

So my second question is:  How do I get it to proceed automatically in spite of the expired key?

Thanks!

Any suggestions will be greatly appreceated.

Rick