[arch-general] Possible to "inherit" from a package?

[Ralf Mardorf]

On Sat, 14 Jul 2018 07:17:20 +0200, Peter Nabbefeld wrote:
>Just to add a build option, I wonder if there's a concept of
>"inheriting" from a package build, so I'd only add the config option?

https://wiki.archlinux.org/index.php/Arch_Build_System#Retrieve_PKGBUILD_source_using_Git

$ asp update
$ asp checkout dovecot
$ cd dovecot/trunk/
$ $EDITOR PKGBUILD

Assuming all make dependencies and required signatures are available
continue with

$ makepkg -s