installation error messages for locale settings are not displayed

[Jeremy Olliver]

Ubuntu 12.04.2 LTS
postgresql-9.1 version 9.1.9-0ubuntu12.04

Expected:

if locale settings are not valid, an error message should be shown either when failing to initialize the cluster, or failing to install the package altogther:

What actually occurred:

I installed postgresql-9.1=9.1.9-0ubuntu12.04, which reported no error messages, but the cluster had not been initialised and the installation had not completed successfully: both /etc/postgresql/9.1/ and /var/lib/postgresql/9.1/ didn't exist, leaving me unable to manually initialise the cluster

This may be a regression, as I was able to troubleshoot and discover the issue by installing postgresql-9.1=9.1.3-2 which *did* report an error initializing the cluster due to incorrect locale settings, and also did correctly create and populate /etc/postgresql/9.1/* configuration files. I was then able to manually initialize the cluster and manually generate a server.crt and upgrade to 9.1.9-0ubuntu12.04

[Jeremy Olliver (jeremy-olliver)]

For additional reference:
The incorrect locale settings I had:

LANG=en_US
LANGUAGE=en_US:
LC_CTYPE=en_NZ.UTF-8
LC_NUMERIC="en_US"
LC_TIME="en_US"
LC_COLLATE="en_US"
LC_MONETARY="en_US"
LC_MESSAGES="en_US"
LC_PAPER="en_US"
LC_NAME="en_US"
LC_ADDRESS="en_US"
LC_TELEPHONE="en_US"
LC_MEASUREMENT="en_US"
LC_IDENTIFICATION="en_US"
LC_ALL=

The error message as correctly reported in version 9.1.3-2:

$ sudo apt-get install postgresql-client-9.1=9.1.3-2
$ sudo apt-get install postgresql-9.1=9.1.3-2
[...]
initdb: encoding mismatch
The encoding you selected (UTF8) and the encoding that the
selected locale uses (LATIN1) do not match
[...]

As mentioned above, the bug being reported is the lack of this error message in package version 9.1.9-0ubuntu12.04