{namespace buck.query}

/***/
{template .soyweb}
  {call buck.page}
    {param title: 'buck query' /}
    {param content}


{call buck.command}
{param overview}
Queries the build dependency graph.

<p>

This can be used to find a path from one dependency to another in the build graph.
The format of the query is <code><em>source</em> -> <em>sink</em></code> as follows:

<pre>buck query '&#x2F;/apps/myapp:app -> &#x2F;/res/com/example/activity:res'</pre>

It can also be used to find the set of transitive dependencies for a build rule by omitting the
sink in the query expression:

<pre>buck query '&#x2F;/apps/myapp:app -> '</pre>

In addition to using fully-qualified build targets such as <code>&#x2F;/apps/myapp:app</code>,
you can also use aliases that you have declared in the <code>[alias]</code> section of
your {call buck.concept_buckconfig /} file in your query:

<pre>buck query 'app -> &#x2F;/some/unexpected:dependency'</pre>

<p>

This can be useful in untangling your dependencies, or for general scripting against
the build graph.

{/param}

{param params}
None.
{/param}

{/call}

    {/param}  // content
  {/call} // buck.page
{/template}