Add repro for ocaml#7335.

Signed-off-by: Rodolphe Lepigre <[email protected]>

test/blackbox-tests/test-cases/install/install-workspace.t/dep/dune

@@ -0,0 +1,4 @@
+(executable
+ (name test2)
+ (public_name test2)
+ (package test2))

test/blackbox-tests/test-cases/install/install-workspace.t/dep/dune-project

@@ -0,0 +1 @@
+(lang dune 3.6)

test/blackbox-tests/test-cases/install/install-workspace.t/dep/test2.ml

@@ -0,0 +1 @@
+let _ = Printf.printf "Hello, world!\n%!"

test/blackbox-tests/test-cases/install/install-workspace.t/dune

@@ -0,0 +1,4 @@
+(executable
+ (name test1)
+ (public_name test1)
+ (package test1))

test/blackbox-tests/test-cases/install/install-workspace.t/dune-project

@@ -0,0 +1 @@
+(lang dune 3.6)

test/blackbox-tests/test-cases/install/install-workspace.t/dune-workspace

@@ -0,0 +1 @@
+(lang dune 3.6)

test/blackbox-tests/test-cases/install/install-workspace.t/run.t

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+The setup for this test is two nested dune projects:
+- a project at the root of the workspace (defining package "test1",
+- a project in the "dep" folder defining package "test2".
+
+When we prepare installation for the "test2" package from the workspace root,
+the installation files are produced under "_build/install".
+
+  $ dune build --display=quiet -p test2 @install
+  $ find . -name _build
+  ./_build
+  $ dune clean
+
+If we do the same from the "dep" directory, we expect the same result, but the
+files are rather produced in "dep/_build/install".
+
+  $ (cd dep && dune build --display=quiet -p test2 @install)
+  $ find . -name _build
+  ./dep/_build
+
+Calling "dune clean" at the workspace root does not clean the nested "_build"
+directory that was produced by the previous call to "dune build".
+
+  $ dune clean
+  $ find . -name _build
+  ./dep/_build
+
+  $ (cd dep && dune clean)
+  $ find . -name _build
+
+Similarly, calling "dune build @install" in the "dep" folder only prepares the
+installation of the packages under "dep", not all packages of the workspace.
+The resulting files end up again under "dep/_build".
+
+  $ (cd dep && dune build @install)
+  $ find . -name _build
+  ./dep/_build

test/blackbox-tests/test-cases/install/install-workspace.t/test1.ml

@@ -0,0 +1 @@
+let _ = Printf.printf "Hello, world!\n%!"