diff --git a/Compiler/mpich/files/variants.merlin b/Compiler/mpich/files/variants.merlin
new file mode 100644
index 0000000..30ac8ad
--- /dev/null
+++ b/Compiler/mpich/files/variants.merlin
@@ -0,0 +1 @@
+mpich/3.2.1_merlin	unstable	gcc/{6.4.0,7.3.0} b:binutils/2.29 b:mxm/3.6.3104