[Pkg-haskell-maintainers] Bug#717019: uninstallable, depends on non-existing packages

[Yaroslav Halchenko]

Package: libghc-dav-dev
Version: 0.4.1-2+b3
Severity: grave

I have no clue in haskel thus can't judge objectively, but such tight
version control looks quite fragile.

$> apt-cache policy libghc-dav-dev               
libghc-dav-dev:
  Installed: (none)
  Candidate: 0.4.1-2+b3
  Version table:
     0.4.1-2+b3 0
        600 http://debian.lcs.mit.edu/debian/ sid/main amd64 Packages

$> sudo apt-get install libghc-dav-dev
[sudo] password for yoh: 
Reading package lists... Done
Building dependency tree       
Reading state information... Done
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:
 libghc-dav-dev : Depends: libghc-base-dev-4.6.0.1-8aa5d
                  Depends: libghc-bytestring-dev-0.10.0.2-4f932
                  Depends: libghc-case-insensitive-dev-1.0.0.1-833d4
                  Depends: libghc-containers-dev-0.5.0.0-ab1da
                  Depends: libghc-http-conduit-dev-1.9.0-53f89
                  Depends: libghc-http-types-dev-0.8.0-cb364
                  Depends: libghc-lens-dev-3.9.0.2-f2bb6
                  Depends: libghc-lifted-base-dev-0.2.0.3-dddaa
                  Depends: libghc-mtl-dev-2.1.2-94c72
                  Depends: libghc-resourcet-dev-0.4.7.1-46f3e
                  Depends: libghc-transformers-dev-0.3.0.0-ff2bb
                  Depends: libghc-xml-conduit-dev-1.1.0.3-fcc6c
                  Depends: libghc-xml-hamlet-dev-0.4.0.4-efd7e
E: Unable to correct problems, you have held broken packages.

$> acpolicy libghc-base-dev-4.6.0.1-8aa5d
libghc-base-dev-4.6.0.1-8aa5d:
  Installed: (none)
  Candidate: (none)
  Version table:

$> dpkg -l libghc-base-dev-4.6.0.1*     
dpkg-query: no packages found matching libghc-base-dev-4.6.0.1*

$> dpkg -l libghc-base-dev-*       
Desired=Unknown/Install/Remove/Purge/Hold
| Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend
|/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad)
||/ Name                                                       Version                            Architecture                       Description
+++-==========================================================-==================================-==================================-==========================================================================================================================
un  libghc-base-dev-4.5.0.0-40b99                              <none>                                                                (no description available)

-- System Information:
Debian Release: jessie/sid
  APT prefers testing
  APT policy: (900, 'testing'), (600, 'unstable'), (300, 'experimental'), (100, 'stable'), (100, 'oldstable')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 3.2.0-4-amd64 (SMP w/2 CPU cores)
Locale: LANG=en_US, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/bash