unikernel/duniverse/dune_/test/blackbox-tests/test-cases/os-variables.t

@@ -0,0 +1,16 @@
+Demonstrate the following variables: %{os}, %{os_version}, %{os_distribution}, %{os_family}
+
+  $ cat >dune-project <<EOF
+  > (lang dune 3.20)
+  > EOF
+
+  $ cat >dune <<EOF
+  > (rule (write-file out "%{os}\n%{os_version}\n%{os_distribution}\n%{os_family}\n"))
+  > EOF
+
+  $ dune build out
+
+The values are not going to be portable, so we just count how many we get:
+
+  $ grep -c '.' _build/default/out
+  4