CPAN::Mini - create a minimal mirror of CPAN


version 1.111017


(If you're not going to do something weird, you probably want to look at the minicpan command, instead.)

use CPAN::Mini;

  remote => "",
  local  => "/usr/share/mirrors/cpan",
  log_level => 'debug',


CPAN::Mini provides a simple mechanism to build and update a minimal mirror of the CPAN on your local disk. It contains only those files needed to install the newest version of every distribution. Those files are:


This library should run on perls released even a long time ago. It should work on any version of perl released in the last five years.

Although it may work on older versions of perl, no guarantee is made that the minimum required version will not be increased. The version may be increased for any reason, and there is no promise that patches will be accepted to lower the minimum required perl.



  remote => "",
  local  => "/usr/share/mirrors/cpan",
  force  => 0,
  log_level => 'debug',

This is the only method that need be called from outside this module. It will update the local mirror with the files from the remote mirror.

If called as a class method, update_mirror creates an ephemeral CPAN::Mini object on which other methods are called. That object is used to store mirror location and state.

This method returns the number of files updated.

The following options are recognized:


my $minicpan = CPAN::Mini->new;

This method constructs a new CPAN::Mini object. Its parameters are described above, under update_mirror.



This method updates the index files from the CPAN.


$minicpan->mirror_file($path, $skip_if_present)

This method will mirror the given file from the remote to the local mirror, overwriting any existing file unless $skip_if_present is true.


next unless $minicpan->file_allowed($filename);

This method returns true if the given file is allowed to exist in the local mirror, even if it isn't one of the required mirror files.

By default, only dot-files are allowed. If the exact_mirror option is true, all files are allowed.



This method looks through the local mirror's files. If it finds a file that neither belongs in the mirror nor is allowed (see the file_allowed method), clean_file is called on the file.

If you set ignore_source_control to a true value, then this doesn't clean up files that belong to source control systems. Currently this ignores:

.cvs .cvsignore
.svn .svnignore
.git .gitignore

Send patches for other source control files that you would like to have added.



This method, called by clean_unmirrored, deletes the named file. It returns true if the file is successfully unlinked. Otherwise, it returns false.





This will log (print) the given message unless the log level is too low.

log, which logs at the info level, may also be called as trace for backward compatibility reasons.


my %config = CPAN::Mini->read_config(\%options);

This routine returns a set of arguments that can be passed to CPAN::Mini's new or update_mirror methods. It will look for a file called .minicpanrc in the user's home directory as determined by File::HomeDir.


my $config_file = CPAN::Mini->config_file( { options } );

This routine returns the config file name. It first looks at for the config_file setting, then the CPAN_MINI_CONFIG environment variable, then the default ~/.minicpanrc, and finally the CPAN/Mini/minicpan.conf. It uses the first defined value it finds. If the filename it selects does not exist, it returns false.

OPTIONS is an optional hash reference of the CPAN::Mini config hash.


my $remote = CPAN::Mini->remote_from( $remote_from, $orig_remote, $quiet );

This routine take an string argument and turn it into a method call to handle to retrieve the a cpan mirror url from a source. Currently supported methods:

cpan     - fetch the first mirror from your config
cpanplus - fetch the first mirror from your config


my $remote = CPAN::Mini->remote_from_cpan;

This routine loads your config and returns the first mirror in mirror list. You can set this as your default by setting remote_from:cpan in your .minicpanrc file.


my $remote = CPAN::Mini->remote_from_cpanplus;

This routine loads your config and returns the first mirror in mirror list. You can set this as your default by setting remote_from:cpanplus in your .minicpanrc file.


Randal Schwartz's original article on minicpan, here:

CPANPLUS::Backend, which provides the local_mirror method, which performs the same task as this module.


Thanks to David Dyck for letting me know about my stupid documentation errors.

Thanks to Roy Fulbright for finding an obnoxious bug on Win32.

Thanks to Shawn Sorichetti for fixing a stupid octal-number-as-string bug.

Thanks to sungo for implementing the filters, so I can finally stop mirroring bioperl, and Robert Rothenberg for suggesting adding coderef rules.

Thanks to Adam Kennedy for noticing and complaining about a lot of stupid little design decisions.

Thanks to Michael Schwern and Jason Kohles, for pointing out missing documentation.

Thanks to David Golden for some important bugfixes and refactoring.




This software is copyright (c) 2004 by Ricardo SIGNES.

This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.