deblan.tv/vendor/trinity/src/Trinity/Bundle/AssetsBundle/Resources/config/services.xml

<?xml version="1.0" ?>
<container xmlns="http://symfony.com/schema/dic/services"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://symfony.com/schema/dic/services http://symfony.com/schema/dic/services/services-1.0.xsd">
	<parameters>
		<!--
		<parameter key="trinity_assets.compressor.class">Trinity\Bundle\AssetsBundle\Compressor\TestCompressor</parameter>
		-->
		<parameter key="trinity_assets.compressor.class">Trinity\Bundle\AssetsBundle\Compressor\LessCssCompressor</parameter>
	</parameters>
	<services>
		<service id="trinity.assets.compressor" class="%trinity_assets.compressor.class%">
			<call method="setBinPath">
				<argument>/usr/local/lesscss/bin/lessc</argument>
			</call>
			<call method="setCmdline">
				<argument><![CDATA[{bin_path} {input} > {output}]]></argument>
			</call>
		</service>
	</services>
</container>