If the other packages are in the AUR, you can simply include them as dependencies. Otherwise, yes, you can download them during the build/package process.
On Tue, Sep 29, 2020, 7:12 AM Franck STAUFFER firstname.lastname@example.org wrote:
I am trying to update solarus-quest-editor but it needs some files that comes from another package. How can I make it works? Should I download the needed files in the $srcdir?