apt-get source report dead links to svn://anonscm.debian.org

[Norbert]

Steps to reproduce:
1. Try to obtain source code of some package - for example for BleachBit with `apt-get source bleachbit`
2. Get console output:

 Reading package lists... Done
 NOTICE: 'bleachbit' packaging is maintained in the 'Svn' version control system at:
 svn://anonscm.debian.org/python-apps/packages/bleachbit/trunk/
 Need to get 794 kB of source archives.
 Get:1 http://archive.ubuntu.com/ubuntu xenial/universe bleachbit 1.10-1 (dsc) [2 025 B]
 Get:2 http://archive.ubuntu.com/ubuntu xenial/universe bleachbit 1.10-1 (tar) [781 kB]
 Get:3 http://archive.ubuntu.com/ubuntu xenial/universe bleachbit 1.10-1 (diff) [11,2 kB]
 Fetched 794 kB in 1s (739 kB/s)
 gpgv: Signature made Tue 24 Mar 2016 18:51:53 MSK using RSA key ID C524065E
 gpgv: Can't check signature: public key not found
 dpkg-source: warning: failed to verify signature on ./bleachbit_1.10-1.dsc
 dpkg-source: info: extracting bleachbit in bleachbit-1.10
 dpkg-source: info: unpacking bleachbit_1.10.orig.tar.gz
 dpkg-source: info: unpacking bleachbit_1.10-1.debian.tar.xz
 dpkg-source: info: applying desktop_file.patch
 dpkg-source: info: applying no_update.patch
 dpkg-source: info: applying local_cleaners_dir.patch
 dpkg-source: info: applying gnomevfs.patch
 dpkg-source: info: applying firefox_profiles.patch

3. Try to get source code manually with `svn` command

     $ cd /tmp
     $ svn co svn://anonscm.debian.org/python-apps/packages/bleachbit/trunk/
     svn: E170013: Unable to connect to a repository at URL 'svn://anonscm.debian.org/python-apps/packages/bleachbit/trunk'
     svn: E000101: Can't connect to host 'anonscm.debian.org': Network is unreachable

Expected results:
* `apt-get source ...` reports correct link for the source code, user is able to get the source code manually.

Actual results:
* `apt-get source ...` reports wrong link for the source code, user is unable to get the source code manually.

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: apt 1.2.29
ProcVersionSignature: Ubuntu 4.15.0-43.46~16.04.1-generic 4.15.18
Uname: Linux 4.15.0-43-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.18
Architecture: amd64
CurrentDesktop: MATE
Date: Sun Jan 20 17:40:08 2019
InstallationDate: Installed on 2018-08-07 (165 days ago)
InstallationMedia: Ubuntu-MATE 16.04.3 LTS "Xenial Xerus" - Release amd64 (20170801)
SourcePackage: apt
UpgradeStatus: No upgrade log present (probably fresh install)

[Norbert (nrbrtx)]

With FreeMat source package I see another type of links:

Bionic, Cosmic and Disco have https://anonscm.debian.org/cgit/debian-science/packages/freemat.git .

So the problem is wider than shown before.

[Julian Andres Klode (juliank)]

This is not a bug. Apt just reports the data in the package fields. The data might be correct or not. As things move, data in older releases or packages not updated recently becomes outdated.

Depending on the package, code might have moved to salsa or elsewhere, or a anonscm repository was archived.