Bug#809088: ghc-mod: Unable to install ghc-mod

[Vasudev Kamath]

Source: ghc-mod
Severity: important

Dear Maintainer,

I'm trying to install ghc-mod but I get following error.

The following information may help to resolve the situation:

The following packages have unmet dependencies:
 ghc-mod : Depends: ghc (< 7.8.4+) but 7.10.3-4.1 is to be installed
           Recommends: ghc-mod-el (= 5.2.1.2-1) but it is not going to be installed
E: Unable to correct problems, you have held broken packages.

Checking at the tracker ¹ It looks like this package is having this
problem for about ~6 months. I also tried installing package from
experimental but it also fails with following error.

The following packages have unmet dependencies:
 ghc-mod : Depends: ghc (< 7.10.2+) but 7.10.3-4.1 is to be installed
           Recommends: ghc-mod-el (= 5.3.0.0-3) but it is not going to be installed
E: Unable to correct problems, you have held broken packages.

Probably the right severity for bug is *grave* as this issue renders
package unusable but I'm not quite sure so I've kept it at
*important*. Please consider bumping severity if that is the right
severity.

Cheers,

-- System Information:
Debian Release: stretch/sid
  APT prefers unstable
  APT policy: (500, 'unstable'), (1, 'experimental')
Architecture: i386 (i686)
Foreign Architectures: amd64

Kernel: Linux 4.2.0-1-686-pae (SMP w/2 CPU cores)
Locale: LANG=en_IN, LC_CTYPE=en_IN (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)