add dune workspace file, to help developping on several compiler versions

c-cube · c-cube · commit 02c3689e9c1d · 2019-11-13T17:36:23.000-06:00
diff --git a/.dune-workspace b/.dune-workspace
@@ -0,0 +1,4 @@
+(lang dune 1.0)
+(context default)
+(context (opam (switch 4.03.0)))
+(context (opam (switch 4.09.0)))
