diff --git a/lib/spack/spack/concretize.py b/lib/spack/spack/concretize.py index 28a29ccc00e..a6de04c4734 100644 --- a/lib/spack/spack/concretize.py +++ b/lib/spack/spack/concretize.py @@ -161,6 +161,11 @@ def concretize_separately( # TODO: support parallel concretization on macOS and Windows num_procs = min(len(args), spack.config.determine_number_of_jobs(parallel=True)) + msg = "Starting concretization" + if sys.platform not in ("darwin", "win32") and num_procs > 1: + msg += f" pool with {num_procs} processes" + tty.msg(msg) + for j, (i, concrete, duration) in enumerate( spack.util.parallel.imap_unordered( _concretize_task, args, processes=num_procs, debug=tty.is_debug(), maxtaskperchild=1