[DRE-maint] [Bug 1240705] Re: 'redmine' 'redmine-mysql' fail to install with 'ruby' (1.9.3)

[Chris Monahan]

Please see ticket #1239686 for related issues.

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https://bugs.launchpad.net/bugs/1240705

Title:
  'redmine' 'redmine-mysql' fail to install with 'ruby' (1.9.3)

Status in “redmine” package in Ubuntu:
  Confirmed

Bug description:
  Hello,

  To sum things up, I think the 'redmine' 2.3.1-1 package is not
  compatible with 'ruby' (indirectly the latest 'ruby1.9.1'
  1.9.3.194-8.1ubuntu2), but only with the older 'ruby1.8'
  (1.8.7.358-7ubuntu2) , which doesn't match with the 'redmine' package
  dependencies at the moment.

  System:
  ---
  $ lsb_release -rd
  Description:	Ubuntu 13.10
  Release:	13.10
  $ sudo apt-cache policy redmine
  redmine:
    Installed: 2.3.1-1
    Candidate: 2.3.1-1
    Version table:
   *** 2.3.1-1 0
          500 http://fr.archive.ubuntu.com/ubuntu/ saucy/universe amd64 Packages
          100 /var/lib/dpkg/status
  ---

  Supposed-expected and actual:
  ---
  Expected: install succeeds and '/etc/redmine/default/database.yml' contains 'adapter: mysql2'
  Actual: install fails (E: Sub-process /usr/bin/dpkg returned an error code (1)), and '/etc/redmine/default/database.yml' contains 'adapter: mysql'
  ---

  Going into details, I meet this error when 'sudo aptitude install redmine redmine-mysql' on Saucy 13.10:
  ---
  Creating config file /etc/redmine/default/session.yml with new version
  A new secret session key has been generated in /etc/redmine/default/session.yml
  Populating database for redmine instance "default".
  This may take a while.
  rake aborted!
  Please install the mysql adapter: `gem install activerecord-mysql-adapter` (cannot load such file -- mysql)

  Tasks: TOP => db:migrate => environment
  (See full trace by running task with --trace)
  Error when running rake db:migrate, check database configuration.
  dpkg: error processing redmine (--configure):
   subprocess installed post-installation script returned error exit status 1
  Processing triggers for libc-bin ...
  Errors were encountered while processing:
   redmine
  E: Sub-process /usr/bin/dpkg returned an error code (1)
  ---

  Looking for the 'redmine' and 'activerecord-mysql-adapter' keywords on the web sent me there:
  ---
  http://stackoverflow.com/questions/9609985/please-install-mysql-adapter-gem-install-activerecord-mysql-adapter
  http://www.redmine.org/projects/redmine/wiki/RedmineInstall  (look for the "Example for a MySQL database using ruby 1.9 (adapter must be set to mysql2)" pattern in this one)
  ---

  And indeed, before purging the failed install, here is the '/etc/redmine/default/database.yml' content:
  ---
  $ sudo cat /etc/redmine/default/database.yml 
  production:
    adapter: mysql
    database: redmine_default
    host: localhost
    port: 
    username: redmine
    password: 
    encoding: utf8
  ---

  By the way, I'm still a linux rookie, and an erroneous packages
  management on my side could be the cause.

  Here is my install context:
  ---
  1/ initial install: Raring 13.04, in a virtualbox guest with snapshots taken after each successfull configuration or before each unmastered one
  2/ 'redmine' install through repositories
  3/ flawless (it seems) upgrade to Saucy 13.10, including the 'redmine' upgrade, in order to have more ruby1.9.3-related dependencies
  4/ purge of 'redmine', in order to purge 'ruby' 1.8 and upgrade it to 1.9.1 (1.9.3.194-8.1ubuntu2), for a manual gitlab install without having to 'gem install' but installing 'ruby-charlock-holmes' from repositories
  5/ flawless manual install of gitlab, relying on the repositories ruby 1.9.1 (1.9.3.194-8.1ubuntu2)
  6/ failed new install of redmine
  ---

  So I try to only install ruby1.9.1-related packages only, not to mess
  up with its 1.8 version, but it doesn't seem to be possible, since the
  'redmine' package, and the 'libapache2-mod-passenger' also, both have
  some ruby1.8 dependencies.

  Feel free to ask me more useful info if needed: I stay tuned :) Thanks
  for free software

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