The perl package now uses a versioned path for compiled modules. This means
\nthat modules built for a non-matching perl version will not be loaded any more
\nand must be rebuilt. <\/p>\n
A pacman hook warns about affected modules during the upgrade by showing output
\nlike this:<\/p>\n
WARNING: ‘\/usr\/lib\/perl5\/vendor_perl’ contains data from at least 143 packages which will NOT be used by the installed perl interpreter.
\n -> Run the following command to get a list of affected packages: pacman -Qqo ‘\/usr\/lib\/perl5\/vendor_perl’<\/p>\n
You must rebuild all affected packages against the new perl package before you
\ncan use them again. The change also affects modules installed directly via
\nCPAN. Rebuilding will also be necessary again with future major perl updates
\nlike 5.28 and 5.30.<\/p>\n
Please note that rebuilding was already required for major updates prior to
\nthis change, however now perl will no longer try to load the modules and then fail in strange ways.<\/p>\n
If the build system of some software does not detect the change automatically,
\nyou can use perl -V:vendorarch in your PKGBUILD to query perl for the
\ncorrect path. There is also sitearch for software that is not packaged with
\npacman.<\/p>\n