[Catalyst] Debian recommendation

Octavian Râşniţă orasnita at gmail.com
Sat Oct 17 20:20:49 GMT 2009

From: "Tomas Doran" <bobtfish at bobtfish.net>

> So I have also tried removing those 2 lines and doing:
> $ perl -Mlocal::lib
> Then
> $ perl Makefile.PL
> But it asked me:
> [sudo] password for www-data:

> You are doing it wrong.
> Just running perl -Mlocal::lib will print out the shell variables  which 
> you need to set for local::lib to work.
> Printing stuff out is not the same as telling your shell about it.

Ok, finally I understood that that command line just prints the commands I 
should use, and not executes those commands and just inform me which they 

(For the 'intelligent' people like me I think it could be useful if that 
command would also print a commented line that tells that the user should 
execute those commands, or to add that line to .bashrc that executes them 
after login.)

But there is still something that doesn't work. I followed the tutorial on 
the Cat wiki and I was able to do everything if I also download and install 
local::lib locally (on /home/user/perl5/...), but if I follow J. Shirley's 
recommendation to install local::lib using the root account, then to install 
the other modules using local::lib, it gives me the following error if I try 
to install a perl module:

Cannot create directory /root/.cpan/prefs

All the other steps are the same and the env vars seem to be right:

t2 at ebroker:~$ pwd
t2 at ebroker:~$  set | egrep "MODULEBUILDRC|PERL5LIB|PERL_MM_OPT|PATH"
t2 at ebroker:~$ perl -MCPAN -e 'install CGI::Application'
CPAN: Storable loaded ok (v2.21)
Going to read '/home/t2/.cpan/Metadata'
  Database was generated on Sat, 17 Oct 2009 09:27:07 GMT
CPAN: YAML loaded ok (v0.70)
Running install for module 'CGI::Application'
Cannot create directory /root/.cpan/prefs

Is it really possible to install locally perl modules using the module 
local::lib if this module is installed in the default location by root?

Thank you.


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