Add repro case to show that setenv variables are not expanded

Signed-off-by: Marek Kubica <[email protected]>

Author: Leonidas-from-XIV

test/blackbox-tests/test-cases/pkg/opam-package-with-setenv.t

@@ -2,8 +2,9 @@ Testing the translation of the setenv field of an opam file into the dune lock d
 
   $ mkrepo
 
-Make a package with a setenv. We also test all the kinds of env updates here expcept for
-=+= which isn't used at all in the wild. 
+Make a package with a setenv. We also test all the kinds of env updates here except for
+=+= which isn't used at all in the wild.
+
   $ mkpkg with-setenv <<EOF
   > setenv: [
   >  [EXPORTED_ENV_VAR = "Hello from the other package!"]
@@ -25,7 +26,7 @@ Make another package that depends on that and outputs the exported env vars
   >  [ "sh" "-c" "echo $append_with_leading_sep" ]
   > ]
   > EOF
-  > solve deps-on-with-setenv
+  $ solve deps-on-with-setenv
   Solution for dune.lock:
   - deps-on-with-setenv.0.0.1
   - with-setenv.0.0.1
@@ -102,7 +103,7 @@ difference between a propagated export_env versus the initial env.
   >  [ "sh" "-c" "echo $append_with_leading_sep" ]
   > ]
   > EOF
-  > solve deps-on-with-setenv-2
+  $ solve deps-on-with-setenv-2
   Solution for dune.lock:
   - deps-on-with-setenv-2.0.0.1
   - with-setenv.0.0.1
@@ -134,3 +135,25 @@ Appended 2nd time without leading sep:Appended without leading sep
   Appended without leading sep:Appended 2nd time without leading sep
   Appended with leading sep:Appended 2nd time with leading sep
 
+We also test whether OPAM variables are expanded in the setenv:
+
+  $ mkpkg with-setenv 0.0.2 <<EOF
+  > setenv: [
+  >  [EXPANDED_EXPORTED_VARIABLE = "%{share}%/library"]
+  > ]
+  > EOF
+  $ mkpkg deps-on-with-setenv 0.0.2 <<'EOF'
+  > depends: [ "with-setenv" {>= "0.0.2"} ]
+  > build: [
+  >  [ "sh" "-c" "echo $EXPANDED_EXPORTED_VARIABLE" ]
+  > ]
+  > EOF
+  $ solve deps-on-with-setenv
+  Solution for dune.lock:
+  - deps-on-with-setenv.0.0.2
+  - with-setenv.0.0.2
+
+We expect that the variables get expanded, but alas at the moment they are not:
+
+  $ build_pkg deps-on-with-setenv
+  %{share}%/library