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.\" ========================================================================
.\"
.IX Title "Catmandu::Config 3pm"
.TH Catmandu::Config 3pm "2023-03-03" "perl v5.36.0" "User Contributed Perl Documentation"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
.\" way too many mistakes in technical documents.
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.SH "NAME"
Catmandu::Config \- Configuration settings of Catmandu
.SH "CONFIG"
.IX Header "CONFIG"
Catmandu configuration options can be stored in files in the root directory of
your programming project. The file can be \s-1YAML, JSON\s0 or Perl and is called
\&\f(CW\*(C`catmandu.yml\*(C'\fR, \f(CW\*(C`catmandu.json\*(C'\fR or \f(CW\*(C`catmandu.pl\*(C'\fR. In this file you can set
the default Catmandu stores and exporters to be used. Here is an example of a
\&\f(CW\*(C`catmandu.yml\*(C'\fR file:
.PP
.Vb 5
\&    store:
\&      default:
\&        package: ElasticSearch
\&        options:
\&          index_name: myrepository
\&
\&    exporter:
\&      default:
\&        package: YAML
.Ve
.SS "Split config"
.IX Subsection "Split config"
For large configs it's more convenient to split the config into several files.
You can do so by having multiple config files starting with catmandu*.
.PP
.Vb 3
\&    catmandu.general.yml
\&    catmandu.db.yml
\&    ...
.Ve
.PP
Split config files are processed and merged by Config::Onion.
.SS "Deeply nested config structures"
.IX Subsection "Deeply nested config structures"
Config files can indicate a path under which their keys will be nested. This
makes your configuration more readable by keeping indentation to a minimum.
.PP
A config file containing
.PP
.Vb 4
\&    _prefix:
\&        foo:
\&            bar:
\&    baz: 1
.Ve
.PP
will be loaded as
.PP
.Vb 3
\&    foo:
\&      bar:
\&        baz: 1
.Ve
.PP
See Config::Onion for more information on how this works.