diff --git a/Tools/gnuplot/files/variants b/Tools/gnuplot/files/variants
deleted file mode 100644
index 73d5f4c..0000000
--- a/Tools/gnuplot/files/variants
+++ /dev/null
@@ -1,10 +0,0 @@
-gnuplot/4.6.3	stable
-gnuplot/5.0.0	stable
-gnuplot/5.2.0	stable
-gnuplot/5.2.4	stable
-gnuplot/5.2.6	stable
-gnuplot/5.2.7	stable
-gnuplot/5.2.8	stable
-gnuplot/5.4.0	stable
-gnuplot/5.4.1	stable
-gnuplot/5.4.2	stable
diff --git a/Tools/gnuplot/files/variants.rhel7 b/Tools/gnuplot/files/variants.rhel7
deleted file mode 100644
index da42b81..0000000
--- a/Tools/gnuplot/files/variants.rhel7
+++ /dev/null
@@ -1,11 +0,0 @@
-gnuplot/4.6.3	stable
-gnuplot/5.0.0	stable
-gnuplot/5.2.0	stable
-gnuplot/5.2.4	stable
-gnuplot/5.2.6	stable
-gnuplot/5.2.7	stable
-gnuplot/5.2.8	stable
-gnuplot/5.4.0	stable
-gnuplot/5.4.1	stable
-gnuplot/5.4.2	stable
-gnuplot/5.4.3	unstable
diff --git a/Tools/gnuplot/files/variants.yaml b/Tools/gnuplot/files/variants.yaml
new file mode 100644
index 0000000..1654f77
--- /dev/null
+++ b/Tools/gnuplot/files/variants.yaml
@@ -0,0 +1,19 @@
+overlay: base 
+relstage: stable
+
+gnuplot/4.6.3:
+gnuplot/5.0.0:        
+gnuplot/5.2.0:       
+gnuplot/5.2.4:       
+gnuplot/5.2.6:       
+gnuplot/5.2.7:       
+gnuplot/5.2.8:       
+gnuplot/5.4.0:       
+gnuplot/5.4.1:       
+gnuplot/5.4.2:       
+gnuplot/5.4.3:
+  - relstage: unstable
+    overlay: devel
+    systems: rhel7
+  - systems: rhel6
+