[R-pkg-team] Bug#929386: r-cran-webgestaltr: FTBFS (missing builds-depends)

[Santiago Vila]

Package: src:r-cran-webgestaltr
Version: 0.3.0-1
Severity: serious
Tags: ftbfs

Dear maintainer:

I tried to build this package in sid but it failed:

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[...]
 debian/rules build-arch
dh build-arch --buildsystem R
   dh_update_autotools_config -a -O--buildsystem=R
   dh_autoreconf -a -O--buildsystem=R
   dh_auto_configure -a -O--buildsystem=R
   dh_auto_build -a -O--buildsystem=R
   dh_auto_test -a -O--buildsystem=R
   create-stamp debian/debhelper-build-stamp
 fakeroot debian/rules binary-arch
dh binary-arch --buildsystem R
   dh_testroot -a -O--buildsystem=R
   dh_prep -a -O--buildsystem=R
   dh_auto_install -a -O--buildsystem=R
I: R Package: WebGestaltR Version: 0.3.0
I: Building using R version 3.6.0-2
I: R API version: r-api-3.5
I: Using built-time from d/changelog: Mon, 18 Feb 2019 14:47:58 +0100
	mkdir -p /<<PKGBUILDDIR>>/debian/r-cran-webgestaltr/usr/lib/R/site-library
	R CMD INSTALL -l /<<PKGBUILDDIR>>/debian/r-cran-webgestaltr/usr/lib/R/site-library --clean . "--built-timestamp='Mon, 18 Feb 2019 14:47:58 +0100'"
ERROR: dependency 'apcluster' is not available for package 'WebGestaltR'
* removing '/<<PKGBUILDDIR>>/debian/r-cran-webgestaltr/usr/lib/R/site-library/WebGestaltR'
dh_auto_install: R CMD INSTALL -l /<<PKGBUILDDIR>>/debian/r-cran-webgestaltr/usr/lib/R/site-library --clean . "--built-timestamp='Mon, 18 Feb 2019 14:47:58 +0100'" returned exit code 1
make: *** [debian/rules:4: binary-arch] Error 2
dpkg-buildpackage: error: fakeroot debian/rules binary-arch subprocess returned exit status 2
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Looks like a missing build-depends.

Thanks.