Build failure under alr for simple test

[simonjwright]

This is under alr 2.0.1 on macOS with aarch64-apple-darwin (GCC 14.1.0).

This is the test file (triggered by a recent Reddit post before I noticed it was about Windows):

with Ada.Text_IO;
with AWS.Client;
with AWS.Response;
procedure The_Doctor is
   Result : AWS.Response.Data;
begin
   Result := AWS.Client.Get
     ("https://github.com/AdaCore/aws/blob/master/src/core/aws-client.ads");
   Ada.Text_IO.Put_Line ("==================");
   Ada.Text_IO.Put (AWS.Response.Message_Body (Result));
   Ada.Text_IO.Put_Line ("==================");
end The_Doctor;

and the build was set up with alr with aws.

The build failed with

$ alr build
ⓘ Building the_doctor=0.1.0-dev/the_doctor.gpr...                            
Bind
   [gprbind]      the_doctor.bexch
   [Ada]          the_doctor.ali
error: "gnatcoll-refcount.ali" not found, "gnatcoll-refcount.adb" must be compiled
error: "gnatcoll-refcount.ali" not found, "gnatcoll-refcount.adb" must be compiled
gprbind: invocation of gnatbind failed
gprbuild: unable to bind the_doctor.adb
error: Command ["gprbuild", "-s", "-j0", "-p", "-P", "/Users/simon/tmp/the_doctor/the_doctor.gpr"] exited with code 4
error: Compilation failed.

I found I could get a successful build by adding a direct dependency (alr with gnatcoll).

I think this may be because aws.gpr doesn’t call in any other projects? (and, what about openssl, xmlada?)