scripted cpan configuration

tphyahoo has asked for the wisdom of the Perl Monks concerning the following question:

I have a script where it would be useful to be able to automate my custom cpan configuration.

Currently I have to do this by hand. Something like:

thartman@thartman-laptop:~/nbarter$ cpan

cpan shell -- CPAN exploration and modules installation (v1.8802)
ReadLine support enabled

                                                                      
+                                                                     
+   cpan[1]> o conf prerequisites_policy
    prerequisites_policy [ask]

                                                                      
+                                                                     
+   cpan[2]> o conf prerequisites_policy follow
    prerequisites_policy [follow]

cpan[4]> o conf commit
commit: wrote '/home/thartman/.cpan/CPAN/MyConfig.pm'

                                                                      
+                                                                     
+   cpan[5]> exit
Lockfile removed.
thartman@thartman-laptop:~/nbarter$
[download]

I had hoped I could do something like cpan 'o conf prerequisites_policy_follow; o conf commit'

but that didn't work. Is there some way to do this using the cpan shell? Or some trick with getting bash to give cpan input so it thinks it's coming from the user?

thanks!

UPDATE: google code search had some good examples that I think I can work with, along with merlyn's column.

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Re: scripted cpan configuration by merlyn (Sage) on Nov 25, 2006 at 17:07 UTC
See my Babysitting an interactive CPAN update, although you may be able to just edit the .pm file that contains the settings instead. Perhaps CPAN::HandleConfig might be a good starting place for the latter. -- Randal L. Schwartz, Perl hacker	[reply]
Re: scripted cpan configuration by brian_d_foy (Abbot) on Nov 25, 2006 at 18:22 UTC
Just create CPAN/Config.pm yourself and put it in a place where it loads before any other CPAN::Config. As long as Perl finds it and it's not missing configuration data, CPAN won't start its interactive configuration. The `CPAN::HandleConfig::load` method is your map to doing it yourself and avoiding the interactive configuration. The CPAN::Config module itself is just an anonymous hash, so you don't have to do that much work to create it yourself. Create the hash with the local values and dump it: `$CPAN::Config = { 'build_cache' => q[10], 'build_dir' => q[/Users/brian/.cpan/build], 'cache_metadata' => q[1], 'cpan_home' => q[/Users/brian/.cpan], 'dontload_hash' => { }, 'ftp' => q[/usr/bin/ftp], 'ftp_proxy' => q[], 'getcwd' => q[cwd], .... }; 1;` [download] -- brian d foy <brian@stonehenge.com> Subscribe to The Perl Review	[reply] [d/l] [select]

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