Debian Ports CD build broke since Jigdo V2 format commit

[John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>]

Hi!

With the changes from:

commit 0dd4219af48f2ffd9d86d6e79a71af4c9b813cf0 (HEAD -> master, origin/master, origin/HEAD)
Author: Steve McIntyre <steve@einval.com>
Date:   Thu Nov 21 19:03:11 2019 +0000

    Add initial support for jigdo v2 format
    
    Add the option to switch to format v2 which uses sha256 everywhere
    instead of md5. We can't actually turn this on yet, need to wait for
    users to upgrade a bit and get new v2-aware jigdo clients.
    
    But this works as-is for generating v1 until we hit that switch - see
    the new JIGOO_CHECKSUM option in CONF.sh

it's no longer possible to build CD images for Debian Ports as the checksums verification
always fails:

glaubitz@casulana:~/debian-cd$ ./easy-build-ports.sh NETINST ppc64
Starting the actual debian-cd build...
Thu 02 Jan 2020 10:31:54 AM UTC: Using CONF from ./CONF-ports.sh.
rm -rf /home/glaubitz/tmp/sid/CD[1234567890]*
rm -rf /home/glaubitz/tmp/sid/tasks
rm -f /home/glaubitz/tmp/sid/*.filelist*
rm -f  /home/glaubitz/tmp/sid/packages-stamp /home/glaubitz/tmp/sid/upgrade-stamp /home/glaubitz/tmp/sid/checksum-check
echo "Cleaning the build directory"
Cleaning the build directory
rm -rf /home/glaubitz/tmp/apt
rm -rf /home/glaubitz/tmp
mkdir -p /home/glaubitz/tmp
mkdir -p /home/glaubitz/tmp/sid
mkdir -p /home/glaubitz/tmp/apt
echo "Updating task files..."
Updating task files...
mkdir -p /home/glaubitz/tmp/sid/tasks
echo "- copying task files from 'tasks/sid/'"
- copying task files from 'tasks/sid/'
cp -r /home/glaubitz/debian-cd/tasks/sid/* /home/glaubitz/tmp/sid/tasks
echo "- generating dynamic task files"
- generating dynamic task files
(...)
Reading package lists...
Building dependency tree...
make[1]: Leaving directory '/home/glaubitz/debian-cd'
 ... checking your mirror
/home/glaubitz/debian-cd/tools/grab_checksums  /srv/mirrors/debian-ports "ppc64" sid sid /home/glaubitz/tmp/sid/checksum-check
/home/glaubitz/debian-cd/tools/grab_checksums: Unsupported checksum specified: /srv/mirrors/debian-ports
Abort
make: *** [Makefile:509: mirrorcheck] Error 1
ERROR: Your mirror has a problem, please correct it.
glaubitz@casulana:~/debian-cd$

Any clues before I start digging?

Adrian

-- 
 .''`.  John Paul Adrian Glaubitz
: :' :  Debian Developer - glaubitz@debian.org
`. `'   Freie Universitaet Berlin - glaubitz@physik.fu-berlin.de
  `-    GPG: 62FF 8A75 84E0 2956 9546  0006 7426 3B37 F5B5 F913