Xenial fails to install with Preseed d-i apt-setup/local0/repository set

[catsem]

Preseed install of Ubuntu Xenial fails with d-i apt-setup/localX/repository option set. The problem is that debian installer does not concat the last string in sources.list correctly. The prefix "deb" is missing. So apt fails to update and the installer cannot continue because there are no valid package sources.

[Alberto Salvia Novella (es20490446e)]

Please:

1. Report to (https://debian.org/Bugs).
2. Paste the new report link here.
3. Set status back to "confirmed".

Thank you.

[catsem (csc03)]

Dear Alberto,
well I don't think this is a debian bug and I tell you why.
I've made a quick check and made preseed installations of both, the latest debian release (Jessie 8.6) and the latest Ubuntu LTS (16.04.1). Debian finished just fine and the repository was properly installed during installation... Ubuntu failed during installation -> no package sources (the bug described in this ticket happened). So instead of pushing away... I think it should be fixed asap.
This is one of the papercuts that disqualifies Ubuntu 16.04 for professional use at the moment (just my humble opinion).

[Mathieu Trudel-Lapierre (cyphermox)]

I can't reproduce this issue here; trying to install ubuntu-server and preseeding apt-setup/local0/repository="http://ppa.launchpad.net/cyphermox/ppa/ubuntu zesty main".

The preseeded repository is indeed showing in sources.list and is written correctly.

If you can still reproduce this bug, please include both the exact preseed used, along with the full contents of /etc/apt/sources.list at the end of the install so we can see what happens.

[catsem (csc03)]

Checked it again and it looks good now for this bug.

But there is still a big issue preventing the preseed installation to success on xenial...
https://bugs.launchpad.net/ubuntu/+source/base-installer/+bug/1553121

But who cares...

I'm still hoping to be able to preseed install xenial before the next long term release arrives...