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aomarks committed Jan 28, 2025
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Expand Up @@ -877,17 +877,17 @@ The following syntaxes can be used in the `wireit.<script>.dependencies` array:

The following environment variables affect the behavior of Wireit:

| Variable | Description |
| ----------------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| `WIREIT_CACHE` | [Caching mode](#caching).<br><br>Defaults to `local` unless `CI` is `true`, in which case defaults to `none`.<br><br>Automatically set to `github` by the [`google/wireit@setup-github-actions-caching/v2`](#github-actions-caching) action.<br><br>Options:<ul><li>[`local`](#local-caching): Cache to local disk.</li><li>[`github`](#github-actions-caching): Cache to GitHub Actions.</li><li>`none`: Disable caching.</li></ul> |
| `WIREIT_FAILURES` | [How to handle script failures](#failures-and-errors).<br><br>Options:<br><ul><li>[`no-new`](#failures-and-errors) (default): Allow running scripts to finish, but don't start new ones.</li><li>[`continue`](#continue): Allow running scripts to continue, and start new ones unless any of their dependencies failed.</li><li>[`kill`](#kill): Immediately kill running scripts, and don't start new ones.</li></ul> |
| Variable | Description |
| ----------------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| `WIREIT_CACHE` | [Caching mode](#caching).<br><br>Defaults to `local` unless `CI` is `true`, in which case defaults to `none`.<br><br>Automatically set to `github` by the [`google/wireit@setup-github-actions-caching/v2`](#github-actions-caching) action.<br><br>Options:<ul><li>[`local`](#local-caching): Cache to local disk.</li><li>[`github`](#github-actions-caching): Cache to GitHub Actions.</li><li>`none`: Disable caching.</li></ul> |
| `WIREIT_FAILURES` | [How to handle script failures](#failures-and-errors).<br><br>Options:<br><ul><li>[`no-new`](#failures-and-errors) (default): Allow running scripts to finish, but don't start new ones.</li><li>[`continue`](#continue): Allow running scripts to continue, and start new ones unless any of their dependencies failed.</li><li>[`kill`](#kill): Immediately kill running scripts, and don't start new ones.</li></ul> |
| `WIREIT_LOGGER` | How to present progress and results on the command line.<br><br>Options:<br><ul><li>`quiet` (default for normal execution): Writes a single dynamically updating line summarizing progress. Only passes along stdout and stderr from commands if there's a failure, or if the command is a service.</li><li>`quiet-ci` (default when `env.CI` or `!stdout.isTTY`): like `quiet` but optimized for non-interactive environments, like GitHub Actions runners.</li><li>`simple`: A verbose logger that presents clear information about the work that Wireit is doing.</li><li>`metrics`: Like `simple`, but also presents a summary table of results once a command is finished.</li></ul> |
| `WIREIT_DEBUG_LOG_FILE` | Path to a file which will receive detailed event logging. |
| `WIREIT_MAX_OPEN_FILES` | Limits the number of file descriptors Wireit will have open concurrently. Prevents resource exhaustion when checking large numbers of cached files. Set to a lower number if you hit file descriptor limits. |
| `WIREIT_PARALLEL` | [Maximum number of scripts to run at one time](#parallelism).<br><br>Defaults to 2×logical CPU cores.<br><br>Must be a positive integer or `infinity`. |
| `WIREIT_WATCH_STRATEGY` | How Wireit determines when a file has changed which warrants a new watch iteration.<br><br>Options:<br><ul><li>`event` (default): Register OS file system watcher callbacks (using [chokidar](https://github.com/paulmillr/chokidar)).</li><li>`poll`: Poll the filesystem every `WIREIT_WATCH_POLL_MS` milliseconds. Less responsive and worse performance than `event`, but a good fallback for when `event` does not work well or at all (e.g. filesystems that don't support filesystem events, or performance and memory problems with large file trees).</li></ul> |
| `WIREIT_WATCH_POLL_MS` | When `WIREIT_WATCH_STRATEGY` is `poll`, how many milliseconds to wait between each filesystem poll. Defaults to `500`. |
| `CI` | Affects the default value of `WIREIT_CACHE`.<br><br>Automatically set to `true` by [GitHub Actions](https://docs.github.com/en/actions/learn-github-actions/environment-variables#default-environment-variables) and most other CI (continuous integration) services.<br><br>Must be exactly `true`. If unset or any other value, interpreted as `false`. |
| `WIREIT_DEBUG_LOG_FILE` | Path to a file which will receive detailed event logging. |
| `WIREIT_MAX_OPEN_FILES` | Limits the number of file descriptors Wireit will have open concurrently. Prevents resource exhaustion when checking large numbers of cached files. Set to a lower number if you hit file descriptor limits. |
| `WIREIT_PARALLEL` | [Maximum number of scripts to run at one time](#parallelism).<br><br>Defaults to 2×logical CPU cores.<br><br>Must be a positive integer or `infinity`. |
| `WIREIT_WATCH_STRATEGY` | How Wireit determines when a file has changed which warrants a new watch iteration.<br><br>Options:<br><ul><li>`event` (default): Register OS file system watcher callbacks (using [chokidar](https://github.com/paulmillr/chokidar)).</li><li>`poll`: Poll the filesystem every `WIREIT_WATCH_POLL_MS` milliseconds. Less responsive and worse performance than `event`, but a good fallback for when `event` does not work well or at all (e.g. filesystems that don't support filesystem events, or performance and memory problems with large file trees).</li></ul> |
| `WIREIT_WATCH_POLL_MS` | When `WIREIT_WATCH_STRATEGY` is `poll`, how many milliseconds to wait between each filesystem poll. Defaults to `500`. |
| `CI` | Affects the default value of `WIREIT_CACHE`.<br><br>Automatically set to `true` by [GitHub Actions](https://docs.github.com/en/actions/learn-github-actions/environment-variables#default-environment-variables) and most other CI (continuous integration) services.<br><br>Must be exactly `true`. If unset or any other value, interpreted as `false`. |

### Glob patterns

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