# Chooser Selector

When pushing to try, there are a very large amount of builds and tests to choose from. Often too
many to remember, making it easy to forget a set of tasks which should otherwise have been run.

This selector allows you to select tasks from a web interface that lists all the possible build and
test tasks and allows you to select them from a list. The values are dynamically generated using the
{ref}`taskgraph<taskcluster-task-graph-generation>` as an input, which ensures that it will never be
out of date.

To use:

```shell
mach try chooser
```

This will spin up a local web server (using Flask) which serves the chooser app. After making your
selection, simply press `Push` and the rest will be handled from there. No need to copy/paste any
syntax strings or the like.

You can run:

```shell
mach try chooser --full
```

To generate the interface using the full {ref}`taskgraph<taskcluster-task-graph-generation>` instead. This will include tasks that don't run
on mozilla-central.