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< h1 class = "p-name post-title" itemprop = "headline name" > About Perl packages in Gentoo< / h1 >
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< / header > < p class = "dateline post-date" > 11 September 2015< / p >
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< p > 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.< / p >
< p > First of all the core distribution of Perl is included in < a href = "https://packages.gentoo.org/package/dev-lang/perl" > dev-lang/Perl< / a > along with < a href = "http://perldoc.perl.org/index-modules-A.html" > modules< / a > .< / p >
< p > The < a href = "https://sources.gentoo.org/cgi-bin/viewvc.cgi/gentoo-x86/perl-core/" > perl-core category< / a > 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.< / p >
< p > 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.< / p >
< p > So, what to do in case of blocks when upgrading your Gentoo machine?< / p >
< p > Perl-cleaner is a package provided to get rid of these blocks and to migrate from perl-core to virtual/perl-*.< / p >
< pre class = "wp-code-highlight prettyprint linenums:1" > emerge perl-cleaner
emerge dev-lang/perl
perl-cleaner --all< / pre >
< p > if you still have problems when upgrading @world you add a backtrack option< / p >
< pre class = "wp-code-highlight prettyprint linenums:1" > emerge -uDN --backtrack=30 @world< / pre >
< p > or you can unmerge all perl-core packages and then finally upgrade world< / p >
< pre class = "wp-code-highlight prettyprint linenums:1" > emerge --unmerge perl-core/*< / pre >
< p > This will remove all perl-core packages that virtual/perl-* packages will bring back if needed.< / p >
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