[Pkg-haskell-maintainers] Bug#781649: ghc-doc: trigger problem during wheezy->jessie upgrade: haddock: error while loading shared libraries: libffi.so.6: cannot open shared object file: No such file or directory

[Andreas Beckmann]

Package: ghc-doc,dpkg,ghc-haddock
Severity: serious
Tags: jessie sid
User: debian-qa at lists.debian.org
Usertags: piuparts

Hi,

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

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

[...]
  Preparing to unpack .../ghc-haddock_7.6.3-20_amd64.deb ...
  Unpacking ghc-haddock (7.6.3-20) over (7.4.1-4) ...
[...]
  Processing triggers for ghc-doc (7.4.1-4) ...
  haddock: error while loading shared libraries: libffi.so.6: cannot open shared object file: No such file or directory
  dpkg: error processing package ghc-doc (--unpack):
   subprocess installed post-installation script returned error exit status 127
[...]

This is the trigger from the wheezy package being called after some
*ghc* packages from jessie have been unpacked.
libffi6 has been scheduled for installation, but is not yet unpacked.

Looks like this is currently reproducible with many libghc-*-doc packages
in piuparts tests that use --install-recommends.

Probably something needs to Breaks: ghc-doc (<< ???)
or ghc-haddock needs to Pre-Depends: libffi6
or ...


cheers,

Andreas
-------------- next part --------------
A non-text attachment was scrubbed...
Name: libghc-authenticate-doc_1.3.2.9-2.log.gz
Type: application/gzip
Size: 65699 bytes
Desc: not available
URL: <http://lists.alioth.debian.org/pipermail/pkg-haskell-maintainers/attachments/20150401/bb106243/attachment-0001.bin>