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Signed-off-by: Alpha DIALLO <[email protected]>

src/dune_rules/enabled_if.ml

@@ -30,7 +30,7 @@ let common_vars ~since =
          match var with
          | "context_name" -> var, (2, 7)
          | "arch_sixtyfour" -> var, (3, 11)
-         | "env" -> var, (1, 14)
+         | "env" -> var, (3, 15)
          | _ -> var, since)
        common_vars_list)
 ;;

test/blackbox-tests/test-cases/enabled_if/eif-env-vars.t

@@ -1,7 +1,7 @@
 Test enabled_if with 'env' variable.
 
   $ cat > dune-project <<EOF
-  > (lang dune 3.16)
+  > (lang dune 3.14)
   > (name dune-test)
   > (package
   >  (name dune-test))
@@ -23,6 +23,21 @@ Test enabled_if with 'env' variable.
   >  (modes exe))
   > EOF
 
+  $ MYVAR=disabled dune exec -- dune_test
+  File "dune", line 10, characters 24-45:
+  10 |  (enabled_if (= enabled %{env:MYVAR=disabled}))
+                               ^^^^^^^^^^^^^^^^^^^^^
+  Error: %{env:..} is only available since version 3.15 of the dune language.
+  Please update your dune-project file to have (lang dune 3.15).
+  [1]
+
+  $ cat > dune-project <<EOF
+  > (lang dune 3.15)
+  > (name dune-test)
+  > (package
+  >  (name dune-test))
+  > EOF
+
   $ cat > main.ml <<EOF
   > let () = print_string "Hello world"
   > EOF