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=head1 NAME

Devel::Local - Use Development Code in Place

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Devel::Local sets up your Perl development environment with the PERL5LIB and
PATH variables that you want. This lets you write and test code in several
interdependent repositories at once, without needing to install anything after
changing it. It is similar to L<local::lib> but easier to use, and simlar to
ylib but more complete.

There are several ways to use Devel::Local. In your Perl code you can do
just that:

    use Devel::Local;

Or when you run a Perl program you can do this:

    > perl -MDevel::Local program.pl

To use it with many Perl programs:

    > export PERL5OPT='-MDevel::Local'
    > perl program1.pl
    > perl program2.pl

To set up your environment with Devel::Local:

    > export PERL5LIB=`perl -MDevel::Local::PERL5LIB`
    > export PATH=`perl -MDevel::Local::PATH`

The handiest way to use Devel::Local is to add this line to your .bashrc:

    source `which devel-local.sh`

Then you'll have the C<devel-local> Bash function to set up your environment
whenever you need to:

    > devel-local [optional-arguments]

See L<USAGE> below from more details.


Sometimes when you are developing Perl software there can several Perl module
code repositories involved. This module lets you specify which repositories
you want to load Perl modules from, and formats them into a PERL5LIB
environment variable format.

Devel::Local takes a list of Perl module repositories that you specify in your
current directory or your home directory. It adds the lib/ subdirectories to
the current value of PERL5LIB, and it also adds the bin/ subdirectories to
your PATH environment variable. You can use absolute paths, relative paths and
even type-globs.

In addition to keeping a list of paths in specially named files, you can name
a specific list file or name specific paths containing lib and bin dirs.

Devel::Local always converts the paths to absolute forms, so switching
directories should not break the behavior.

=head1 USAGE

As was pointed out in the L<SYNOPSIS> above, there are several ways to invoke
Devel::Local. In each of those forms, you have several ways to indicate your
paths of interest:


=item C<$HOME/.perl-devel-local>

Create a file called C<~/.perl-devel-local> that has lines like this:

    # Use the GitHub versions of these:

=item C<./devel-local>

Create a file called C<./devel-local> that looks like this:

    # Use the GitHub versions of these:


You may also use any other config file path you wish, by setting the
C<PERL_DEVEL_LOCAL> environment variable.

NOTE: Devel::Local will ignore all the lines in these config files after the
      first blank line. This way, you can put several groupings of devel
      libraries in one file. Just make sure that the grouping you want to use
      is at the top of the file.

=item C<Specify Config File>

You can specify the config file directly:

    use Devel::Local /path/to/devel-local-conf


    > devel-local /path/to/devel-local-conf

=item C<List of Paths>

You can list paths directly:

    use Devel::Local qw(.  ../yaml-libyaml-pm/ ../catalyst-*);


    > devel-local .  ../yaml-libyaml-pm/ ../catalyst-*


=head1 XS AND C<BLIB>

You can use Devel::Local with modules that are not pure Perl. In other words,
modules that get compiled before installing.

If Devel::Local sees a C<.xs> file anywhere in the dist, it will add C<blib/>
to the C<PERL5LIB> after <lib/>.

It is up to you to run C<make> after changing your .xs code, so that the
changes get added to your C<blib/>.


Whenever you use the C<devel-local> bash function, it will pretty print
the values. If you just want to see the values listed without modifying
them, do this:

    > devel-local ?


Devel::Local puts a special delimiter, '|', in the PATH variables, so that it
can later remove the things it added. You can trigger this by passing it a
single argument of '!'.

    > devel::local      # Add stuff to $PATH and $PERL5LIB
    > devel::local path/foo path/bar-*  # Add more stuff
    > devel::local !    # Reset to original values

=head1 SEE ALSO


=item * L<File::Share>

=item * L<ylib>

=item * L<local::lib>


=head1 AUTHOR

Ingy döt Net <ingy@cpan.org>


Copyright 2011-2014. Ingy döt Net.

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

See L<http://www.perl.com/perl/misc/Artistic.html>