48 lines
1.9 KiB
Markdown
48 lines
1.9 KiB
Markdown
---
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id: 198
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title: About Perl packages in Gentoo
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date: 2015-09-11T12:52:25+00:00
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author: pesceWanda
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layout: post
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guid: http://francescomecca.eu/?p=198
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permalink: /index.php/archives/198
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categories:
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- PesceWanda
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tags:
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- emerge
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- Gentoo
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- perl
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- perl-core
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- portage conflict
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- virtual/perl
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---
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In this post I wish to explain a bit about Perl related ebuilds in Gentoo and how to update from perl-core to virtual/perl without conflicts.
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First of all the core distribution of Perl is included in [dev-lang/Perl](https://packages.gentoo.org/package/dev-lang/perl) along with [modules](http://perldoc.perl.org/index-modules-A.html).
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The [perl-core category](https://sources.gentoo.org/cgi-bin/viewvc.cgi/gentoo-x86/perl-core/) in portage contains ebuilds for perl modules, some of which are included in the core perl distibution. The perl-core ebuilds overrides the perl-core modules such that you can update them without recompiling dev-lang/Perl.
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Each perl-core module has a corrensponding virtual/perl-* package. The virtual category is used by portage when emerging to take into account that a module can be either provided by dev-lang/perl package or found in perl-core category.
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So, what to do in case of blocks when upgrading your Gentoo machine?
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Perl-cleaner is a package provided to get rid of these blocks and to migrate from perl-core to virtual/perl-*.
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<pre class="wp-code-highlight prettyprint linenums:1">emerge perl-cleaner
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emerge dev-lang/perl
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perl-cleaner --all</pre>
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if you still have problems when upgrading @world you add a backtrack option
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<pre class="wp-code-highlight prettyprint linenums:1">emerge -uDN --backtrack=30 @world</pre>
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or you can unmerge all perl-core packages and then finally upgrade world
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<pre class="wp-code-highlight prettyprint linenums:1">emerge --unmerge perl-core/*</pre>
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This will remove all perl-core packages that virtual/perl-* packages will bring back if needed.
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<p style="text-align: right;">
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Francesco Mecca
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</p>
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