Always set workflow:rules in spack ci pipelines (#38921)

lib/spack/spack/ci.py

@@ -1287,9 +1287,6 @@ def main_script_replacements(cmd):
         if spack_stack_name:
             output_object["variables"]["SPACK_CI_STACK_NAME"] = spack_stack_name
 
-        # Ensure the child pipeline always runs
-        output_object["workflow"] = {"rules": [{"when": "always"}]}
-
         if spack_buildcache_copy:
             # Write out the file describing specs that should be copied
             copy_specs_dir = os.path.join(pipeline_artifacts_dir, "specs_to_copy")
@@ -1305,21 +1302,17 @@ def main_script_replacements(cmd):
             with open(copy_specs_file, "w") as fd:
                 fd.write(json.dumps(buildcache_copies))
 
-        sorted_output = {}
-        for output_key, output_value in sorted(output_object.items()):
-            sorted_output[output_key] = output_value
-
         # TODO(opadron): remove this or refactor
         if run_optimizer:
             import spack.ci_optimization as ci_opt
 
-            sorted_output = ci_opt.optimizer(sorted_output)
+            output_object = ci_opt.optimizer(output_object)
 
         # TODO(opadron): remove this or refactor
         if use_dependencies:
             import spack.ci_needs_workaround as cinw
 
-            sorted_output = cinw.needs_to_dependencies(sorted_output)
+            output_object = cinw.needs_to_dependencies(output_object)
     else:
         # No jobs were generated
         noop_job = spack_ci_ir["jobs"]["noop"]["attributes"]
@@ -1330,10 +1323,17 @@ def main_script_replacements(cmd):
             noop_job["script"] = [
                 'echo "copy-only pipelines are not supported with deprecated ci configs"'
             ]
-            sorted_output = {"unsupported-copy": noop_job}
+            output_object = {"unsupported-copy": noop_job}
         else:
             tty.debug("No specs to rebuild, generating no-op job")
-            sorted_output = {"no-specs-to-rebuild": noop_job}
+            output_object = {"no-specs-to-rebuild": noop_job}
+
+    # Ensure the child pipeline always runs
+    output_object["workflow"] = {"rules": [{"when": "always"}]}
+
+    sorted_output = {}
+    for output_key, output_value in sorted(output_object.items()):
+        sorted_output[output_key] = output_value
 
     if known_broken_specs_encountered:
         tty.error("This pipeline generated hashes known to be broken on develop:")

lib/spack/spack/test/cmd/ci.py

@@ -215,6 +215,10 @@ def test_ci_generate_with_env(
         with open(outputfile) as f:
             contents = f.read()
             yaml_contents = syaml.load(contents)
+            assert "workflow" in yaml_contents
+            assert "rules" in yaml_contents["workflow"]
+            assert yaml_contents["workflow"]["rules"] == [{"when": "always"}]
+
             assert "stages" in yaml_contents
             assert len(yaml_contents["stages"]) == 5
             assert yaml_contents["stages"][0] == "stage-0"
@@ -1102,9 +1106,9 @@ def test_push_mirror_contents(
             with open(outputfile_pruned) as f:
                 contents = f.read()
                 yaml_contents = syaml.load(contents)
-                assert "no-specs-to-rebuild" in yaml_contents
                 # Make sure there are no other spec jobs or rebuild-index
-                assert len(yaml_contents.keys()) == 1
+                assert set(yaml_contents.keys()) == {"no-specs-to-rebuild", "workflow"}
+
                 the_elt = yaml_contents["no-specs-to-rebuild"]
                 assert "tags" in the_elt
                 assert "nonbuildtag" in the_elt["tags"]
@@ -1112,6 +1116,9 @@ def test_push_mirror_contents(
                 assert the_elt["image"] == "basicimage"
                 assert the_elt["custom_attribute"] == "custom!"
 
+                assert "rules" in yaml_contents["workflow"]
+                assert yaml_contents["workflow"]["rules"] == [{"when": "always"}]
+
             outputfile_not_pruned = str(tmpdir.join("unpruned_pipeline.yml"))
             ci_cmd("generate", "--no-prune-dag", "--output-file", outputfile_not_pruned)