Package: ghc-doc,dpkg,ghc-haddock
Severity: serious
Tags: jessie sid
User: debian...@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

Attachment: libghc-authenticate-doc_1.3.2.9-2.log.gz
Description: application/gzip

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