🐛 fix(parallel): show --list-dependencies output#3786
Merged
gaborbernat merged 1 commit intotox-dev:mainfrom Feb 20, 2026
Merged
🐛 fix(parallel): show --list-dependencies output#3786gaborbernat merged 1 commit intotox-dev:mainfrom
gaborbernat merged 1 commit intotox-dev:mainfrom
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In parallel mode, stdout is suspended into buffers and only flushed on failure or when parallel_show_output is set. This caused --list-dependencies output to be silently discarded on success. Also flush buffered output when list_dependencies is enabled.
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Running
tox run-parallel --list-dependenciessilently discards the dependency output on successful runs. This happens because parallel mode suspends all stdout/stderr into in-memory buffers, and those buffers are only flushed when a test fails or whenparallel_show_outputis explicitly enabled. Since--list-dependencieswrites vialogging.warning(), the output gets captured and never reaches the user.The fix adds
list_dependenciesas an additional condition for flushing the suspended output buffers after each environment completes. This sits alongside the existingparallel_show_outputand failure checks in_handle_one_run_done, preserving the same flush-or-discard pattern while ensuring dependency output is always visible when requested.Fixes #3322