Parallelize template Justfile recipes with mprocs - #327
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Drive the per-template loops in `install-all`, `_install-all-clean`, `regenerate-codegen`, and `update-ai-files` through `npx mprocs@latest` via a shared `_run-parallel` recipe. It falls back to sequential execution when there is no TTY (e.g. CI), where mprocs would hang. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Use mprocs's `--on-all-finished` (>= 0.9) so the interactive TUI quits on its own once every command finishes. Replace the sequential non-TTY fallback with parallel background jobs that capture per-command output and propagate a non-zero exit code, so CI runs in parallel and still fails when a template command fails (mprocs itself is unfit for CI: it needs a TTY and always exits 0). Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Replace the hand-rolled background-jobs fallback with `concurrently`, a documented tool built for non-interactive parallel execution: it prefixes each command's output and, with the default `--success all`, exits non-zero if any command failed. mprocs is still used for the interactive (TTY) path. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Nicolapps
marked this pull request as draft
July 2, 2026 18:12
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The per-template loops in
install-all,_install-all-clean,regenerate-codegen, andupdate-ai-filesnow run in parallel via a shared_run-parallelrecipe instead of iterating sequentially. In an interactive terminal it launches everything at once in anmprocslive TUI, using--on-all-finished(mprocs >= 0.9) so it quits automatically when every command finishes. Sincemprocsis unfit for CI — it refuses to start without a TTY and always exits 0 regardless of failures — the non-interactive path usesconcurrently, which runs the commands in parallel with prefixed output and exits non-zero if any command failed. So both local and CI runs are parallelized while CI still fails loudly when a template command breaks.