%gnu-build-system-modules is deprecated, so let us use
%default-gnu-imported-modules instead as the warning suggests.
* nongnu/packages/dyalog.scm (dyalog-apl)[arguments]<#:modules>: Use
%default-gnu-imported-modules instead of %gnu-build-system-modules.
Signed-off-by: Jelle Licht <jlicht@fsfe.org>