Bug#802953: ess: install/ess may interact with console, fail emacs24 upgrade

[Dirk Eddelbuettel]

On 25 October 2015 at 15:43, Hilko Bengen wrote:
| Package: ess
| Version: 15.09-1
| Severity: grave
| Tags: patch
| 
| While upgrading emacs24 from 24.5+1-2 to 24.5+1-3 today, the
| installation paused and I got the the following prompt:

C'mon now 2 of 2.  It is mostly to signal that I consider myself as a
placeholder maintainer. I don't write elisp, but I use ESS a lot so I offered
to help.

The list is fine, and watched by a human.

Dirk

| 
| ,----
| | Install ess for emacs24
| | install/notmuch: Handling install for emacsen flavor emacs24
| | install/notmuch: byte-compiling for emacs24
| | gzip: Install.log.gz already exists; do you wish to overwrite (y or n)? 
| `----
| 
| Pressing n caused the installation to fail:
| 
| ,----
| | gzip: Install.log.gz already exists; do you wish to overwrite (y or n)? n
| |         not overwritten
| | ERROR: install script from ess package failed
| | dpkg: error while cleaning up:
| |  subprocess installed post-installation script returned error exit status 1
| `----
| 
| /usr/lib/emacsen-common/packages/install/ess wants to gzip its
| install log which leads to the above prompt if the gzipped version
| already exists, a violation of Debian Policy 3.9.1. "Prompting in
| maintainer scripts".
| 
| Adding a simple "-f" when invoking gzip fixes this.
| 
| Cheers,
| -Hilko
| 
| -- System Information:
| Debian Release: stretch/sid
|   APT prefers unstable
|   APT policy: (500, 'unstable')
| Architecture: amd64 (x86_64)
| Foreign Architectures: i386
| 
| Kernel: Linux 4.2.0-1-amd64 (SMP w/6 CPU cores)
| Locale: LANG=en_US.utf8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
| Shell: /bin/sh linked to /bin/dash
| Init: systemd (via /run/systemd/system)
| 
| Versions of packages ess depends on:
| ii  dpkg            1.18.3
| ii  emacsen-common  2.0.8
| ii  install-info    6.0.0.dfsg.1-3
| 
| Versions of packages ess recommends:
| ii  r-base-core  3.2.2-1
| 
| Versions of packages ess suggests:
| pn  jags       <none>
| pn  julia      <none>
| pn  pspp       <none>
| pn  xlispstat  <none>
| 
| -- no debconf information
| 
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-- 
http://dirk.eddelbuettel.com | @eddelbuettel | edd at debian.org