Feature: suppress step timings for verbosity=1 #2891 (#2992)

docs/changelog/2891.feature.rst

@@ -0,0 +1,2 @@
+When run with verbosity=1, the per-step timing summaries are suppressed at the
+end of the run.  Thanks to :user:`nedbat` at the PyCon 2023 sprints.

src/tox/session/cmd/run/common.py

@@ -174,7 +174,7 @@ def _print(color_: int, message: str) -> None:
     for run in runs:
         successful.append(run.code == Outcome.OK or run.ignore_outcome)
         skipped.append(run.skipped)
-        duration_individual = [o.elapsed for o in run.outcomes]
+        duration_individual = [o.elapsed for o in run.outcomes] if verbosity >= 2 else []
         extra = f"+cmd[{','.join(f'{i:.2f}' for i in duration_individual)}]" if duration_individual else ""
         setup = run.duration - sum(duration_individual)
         msg, color = _get_outcome_message(run)

tests/session/cmd/test_sequential.py

@@ -44,6 +44,16 @@ def _cmd(value: int) -> str:
     assert Matches(r"  a: FAIL code 1 \(.*=setup\[.*\]\+cmd\[.*\] seconds\)") == reports[-3]
 
 
+def test_run_sequential_quiet(tox_project: ToxProjectCreator) -> None:
+    ini = "[tox]\nenv_list=a\nno_package=true\n[testenv]\ncommands=python -V"
+    project = tox_project({"tox.ini": ini})
+    outcome = project.run("r", "-q", "-e", "a")
+    outcome.assert_success()
+    reports = outcome.out.splitlines()[-3:]
+    assert Matches(r"  congratulations :\) \(.* seconds\)") == reports[-1]
+    assert Matches(r"  a: OK \([\d.]+ seconds\)") == reports[-2]
+
+
 @pytest.mark.integration()
 def test_result_json_sequential(
     tox_project: ToxProjectCreator,