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Automating CPAN on FreeBSD

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# 1  
Old 04-08-2009
Automating CPAN on FreeBSD
When using CPAN for the first time, a number of questions are prompted to the user, thereby halting the process. Since I am running FreeBSD I was wondering whether the inclusion of the port instead leads to the same result. So instead of having the following:
Code:
perl -MCPAN -e "install DBD::SQLite"

and getting trapped into the CPAN dialogue, I might as well do the following:
Code:
cd /usr/ports/databases/p5-DBD-SQLite
make install clean

or
Code:
pkg_add -r p5-DBD-SQLite

Is that a fair alternative?
# 2  
Old 04-14-2009
Ports will not help if you have specific packages that do not exist on the ports tree.

You may try to see if a CPAN no-prompt trick will help you. It may work for some modules but perhaps not for the rest. There's no harm trying though.

CPAN - perldoc.perl.org

Take a look at Q13.
# 3  
Old 04-15-2009
Thank you for your response. The bit that I have added to the line will make a line look as follows:
Code:
PERL_MM_USE_DEFAULT=1 perl -MCPAN -e "install Term::ReadLine::Gnu"

Problematically, this will bring the script in an endless loop requesting the user to select a geographical location of the CPAN server, without the possibility for the user to provide any answer.
# 4  
Old 04-16-2009
This is not the problem due to the package, but the CPAN installation being not set up on a specific workstation/user yet. That option will not help with this, because you must set up the configuration on first use.

Please refer to this section:

CPAN - perldoc.perl.org

One possible thought is to manually copy an existing CPAN configuration file and make sure it is installed in the user environment before you execute other CPAN commands. Try it and tell us if it works.
# 5  
Old 04-16-2009
Thank you for your response. This is the content of the $HOME/.cpan/CPAN/Config.pm file:
Code:
$CPAN::Config = {
'build_cache' => q[10],
'build_dir' => q[/root/.cpan/build],
'cache_metadata' => q[1],
'cpan_home' => q[/root/.cpan],
'ftp' => q[ ],
'ftp_proxy' => q[ ],
'gzip' => q[/usr/bin/gzip],
'histfile' => q[/root/.cpan/histfile],
'histsize' => q[100],
'inactivity_timeout' => q[0],
'index_expire' => q[1],
'inhibit_startup_message' => q[0],
'make' => q[/usr/bin/make],
'make_arg' => q[],
'make_install_arg' => q[],
'makepl_arg' => q[],
'ncftp' => q[ ],
'ncftpget' => q[ ],
'no_proxy' => q[],
'pager' => q[/usr/bin/less],
'prerequisites_policy' => q[follow],
'proxy_user' => q[],
'scan_cache' => q[atstart],
'shell' => q[/bin/sh],
'tar' => q[/usr/bin/tar],
'term_is_latin' => q[1],
'unzip' => q[],
'urllist' => [q[http://www.perl.com/CPAN/]],
'wget' => q[],
};

It looks like it is working, but I will run some more tests to see what is the optimal configuration, since it has not run uninterrupted for various other reasons.

UPDATE: even on a clean installation of the operating system I have not been able to make this work; the same CPAN questions keep appearing, please advise.
Last edited by figaro; 04-16-2009 at 06:52 AM.. Reason: Added new information.
# 6  
Old 04-16-2009
Are you sure you are putting it in the correct home dir (your config seems to work only with "root")?

One suggestion. Try to run cpan with strace and find out (from the system calls output) what locations cpan has sought for the configuration file(s). It's not very easy to trace this way but will certainly give you a better idea how the search goes. Make sure cpan has actually tried to find that file.

I don't have access to a Linux Perl installation at the moment. Will try myself maybe tomorrow if I have the time.
# 7  
Old 04-16-2009
The script this comes from is run as root as part of a system installation. The directory .cpan and its subdirectory CPAN are created on the fly. The Config.pm is placed in $HOME/.cpan/CPAN and the cpan modules are loaded. It's the last bit that is not silent.

Will come back with more details later.
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