Bug#820312: python-laditools: fails to upgrade from 'jessie': does not find an upgrade path

[Andreas Beckmann]

Package: python-laditools
Version: 1.1.0-2
Severity: serious
User: debian-qa at lists.debian.org
Usertags: piuparts

Hi,

during a test with piuparts I noticed your package fails to upgrade from
'jessie'.
It installed fine in 'jessie', then the upgrade to 'stretch' fails.

>From the attached log (scroll to the bottom...):

2m17.8s DEBUG: Starting command: ['chroot', '/tmp/piupartss/tmpRqftPg', 'apt-get', '-y', 'install', 'python-laditools']
2m18.1s DUMP: 
  Reading package lists...
  Building dependency tree...
  Reading state information...
  Some packages could not be installed. This may mean that you have
  requested an impossible situation or if you are using the unstable
  distribution that some required packages have not yet been created
  or been moved out of Incoming.
  The following information may help to resolve the situation:
  
  The following packages have unmet dependencies:
   python-laditools : Depends: python-enum34 but it is not going to be installed
  E: Unable to correct problems, you have held broken packages.
2m18.1s ERROR: Command failed (status=100): ['chroot', '/tmp/piupartss/tmpRqftPg', 'apt-get', '-y', 'install', 'python-laditools']

the apt problemresolver reports:

  Investigating (0) python-enum [ amd64 ] < 0.4.4-3 > ( python )
  Broken python-enum:amd64 Conflicts on python-enum34 [ amd64 ] < none -> 1.1.2-1 > ( python )
    Considering python-enum34:amd64 -1 as a solution to python-enum:amd64 0
    Added python-enum34:amd64 to the remove list
    Fixing python-enum:amd64 via keep of python-enum34:amd64
  Investigating (1) python-laditools [ amd64 ] < 1.0.1-2 -> 1.1.0-2 > ( python )
  Broken python-laditools:amd64 Depends on python-enum34 [ amd64 ] < none -> 1.1.2-1 > ( python )
    Considering python-enum34:amd64 -1 as a solution to python-laditools:amd64 10000
    Re-Instated python-enum34:amd64
  Investigating (1) python-enum [ amd64 ] < 0.4.4-3 > ( python )
  Broken python-enum:amd64 Conflicts on python-enum34 [ amd64 ] < none -> 1.1.2-1 > ( python )
    Considering python-enum34:amd64 -1 as a solution to python-enum:amd64 0
    Added python-enum34:amd64 to the remove list
    Fixing python-enum:amd64 via keep of python-enum34:amd64
  Investigating (2) python-laditools [ amd64 ] < 1.0.1-2 -> 1.1.0-2 > ( python )
  Broken python-laditools:amd64 Depends on python-enum34 [ amd64 ] < none -> 1.1.2-1 > ( python )
    Considering python-enum34:amd64 -1 as a solution to python-laditools:amd64 10000
  Done

Maybe it's sufficient to add a 
  Conflicts: python-enum
to python-laditools, but I haven't tested this.

cheers,

Andreas
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