diff --git a/sci-electronics/nvc/nvc-1.10.1-r1.ebuild b/sci-electronics/nvc/nvc-1.10.1-r2.ebuild
similarity index 96%
rename from sci-electronics/nvc/nvc-1.10.1-r1.ebuild
rename to sci-electronics/nvc/nvc-1.10.1-r2.ebuild
index 76f0dafc7b92b..801f314f5b8aa 100644
--- a/sci-electronics/nvc/nvc-1.10.1-r1.ebuild
+++ b/sci-electronics/nvc/nvc-1.10.1-r2.ebuild
@@ -3,6 +3,8 @@
 
 EAPI=8
 
+LLVM_MAX_SLOT=16
+
 inherit autotools bash-completion-r1 llvm
 
 DESCRIPTION="NVC is a VHDL compiler and simulator"
@@ -38,7 +40,7 @@ RDEPEND="
 	dev-libs/libxml2:=
 	sys-libs/ncurses:=
 	sys-libs/zlib:=
-	llvm? ( sys-devel/llvm:= )
+	llvm? ( <sys-devel/llvm-$((${LLVM_MAX_SLOT} + 1)):= )
 "
 DEPEND="
 	${RDEPEND}
diff --git a/sci-electronics/nvc/nvc-1.10.2-r1.ebuild b/sci-electronics/nvc/nvc-1.10.2-r2.ebuild
similarity index 96%
rename from sci-electronics/nvc/nvc-1.10.2-r1.ebuild
rename to sci-electronics/nvc/nvc-1.10.2-r2.ebuild
index 76f0dafc7b92b..801f314f5b8aa 100644
--- a/sci-electronics/nvc/nvc-1.10.2-r1.ebuild
+++ b/sci-electronics/nvc/nvc-1.10.2-r2.ebuild
@@ -3,6 +3,8 @@
 
 EAPI=8
 
+LLVM_MAX_SLOT=16
+
 inherit autotools bash-completion-r1 llvm
 
 DESCRIPTION="NVC is a VHDL compiler and simulator"
@@ -38,7 +40,7 @@ RDEPEND="
 	dev-libs/libxml2:=
 	sys-libs/ncurses:=
 	sys-libs/zlib:=
-	llvm? ( sys-devel/llvm:= )
+	llvm? ( <sys-devel/llvm-$((${LLVM_MAX_SLOT} + 1)):= )
 "
 DEPEND="
 	${RDEPEND}
diff --git a/sci-electronics/nvc/nvc-1.10.3.ebuild b/sci-electronics/nvc/nvc-1.10.3-r1.ebuild
similarity index 96%
rename from sci-electronics/nvc/nvc-1.10.3.ebuild
rename to sci-electronics/nvc/nvc-1.10.3-r1.ebuild
index 76f0dafc7b92b..801f314f5b8aa 100644
--- a/sci-electronics/nvc/nvc-1.10.3.ebuild
+++ b/sci-electronics/nvc/nvc-1.10.3-r1.ebuild
@@ -3,6 +3,8 @@
 
 EAPI=8
 
+LLVM_MAX_SLOT=16
+
 inherit autotools bash-completion-r1 llvm
 
 DESCRIPTION="NVC is a VHDL compiler and simulator"
@@ -38,7 +40,7 @@ RDEPEND="
 	dev-libs/libxml2:=
 	sys-libs/ncurses:=
 	sys-libs/zlib:=
-	llvm? ( sys-devel/llvm:= )
+	llvm? ( <sys-devel/llvm-$((${LLVM_MAX_SLOT} + 1)):= )
 "
 DEPEND="
 	${RDEPEND}