macos: enable host-driven BEAM restart in host-first bundle - #18
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Set the new [lifetime] INI keys (restart_beam, restart_max_attempts, restart_backoff_ms) when packaging the host-first DesktopWebView app. This activates the native host's child-exit watcher that replaces heart as the BEAM restart mechanism. Pairs with elixir-desktop/webview PR #4 which adds the watcher and keys. The Erlang release generated by this packaging does not need -heart; the host is the long-lived process. Co-Authored-By: Claude <noreply@anthropic.com> Co-authored-by: Cursor <cursoragent@cursor.com>
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dominicletz
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Aug 10, 2026
The host-driven BEAM restart commit (#18) introduced a `case` clause in `Desktop.Deployment.Package.MacOS.release/1` that the current formatter rewrites with blank lines between branches. The CI `mix lint` alias runs `format --check-formatted`, which has been failing on main since #18. Reformat the `case` so the file passes the formatter check. Co-authored-by: Cursor <cursoragent@cursor.com>
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Summary
Set the new
[lifetime]INI keys (restart_beam,restart_max_attempts,restart_backoff_ms) when packaging the host-first macOS DesktopWebView bundle. This activates the native host's child-exit watcher added in elixir-desktop/webview#4 so the host (notheart) drives BEAM restart.The host-first layout makes the native process the long-lived one, which inverts the heart model. With these settings the host watches the BEAM child, applies an exponential backoff, and respawns.
system.prepare_quitfrom Elixir still suppresses respawn during a user-initiated quit.The Erlang release generated by this packaging does not need
-heart; the release script can run BEAM directly and the host takes care of restarts.Test plan
Desktop.Deployment.Package.MacOS; verify generatedDesktopWebView.inicontains the three new keys in[lifetime]