List the repo's registered source roots.
Backend: <span style="color: purple"><code>pants.backend.project_info</code></span> Config section: <span style="color: purple"><code>[roots]</code></span>
## Basic options
<div style="color: purple"> <h3><code>output_file</code></h3> <code>--roots-output-file=<path></code><br> <code>PANTS_ROOTS_OUTPUT_FILE</code><br> </div> <div style="padding-left: 2em;"> <span style="color: green">default: <code>None</code></span>
<br>
Output the goal's stdout to this file. If unspecified, outputs to stdout.
</div> <br>
<div style="color: purple"> <h3><code>sep</code></h3> <code>--roots-sep=<separator></code><br> <code>PANTS_ROOTS_SEP</code><br> </div> <div style="padding-left: 2em;"> <span style="color: green">default: <code>\n</code></span>
<br>
String to use to separate lines in line-oriented output.
</div> <br>
## Advanced options
None
## Deprecated options
None
## Related subsystems
[source](🔗)