dev-R/jsonlite: respect AR

Closes: https://bugs.gentoo.org/794100
Package-Manager: Portage-3.0.22, Repoman-3.0.3
Signed-off-by: Alessandro Barbieri <lssndrbarbieri@gmail.com>

dev-R/jsonlite/jsonlite-1.7.2.ebuild

@@ -3,10 +3,14 @@
 
 EAPI=7
 
-inherit R-packages
+inherit R-packages toolchain-funcs
 
 DESCRIPTION='A Simple and Robust JSON Parser and generator for R'
 KEYWORDS="~amd64"
 LICENSE='MIT'
 
 #unbundling status: https://github.com/jeroen/jsonlite/issues/201
+src_prepare() {
+	tc-export AR
+	R-packages_src_prepare
+}