Exemplo de configuração .sublime-project

gistfile1.js

{
	"folders":
	[
		{
			"path": "www"
		}
	],
    
    "build_systems":
    [
        {
            "name": "Main LESS",
            "cmd": ["$packages\\LESS-build\\dotless.Compiler.exe", "main.less", "main.css"],
            "file_regex": "^[ ]*File \"(...*?)\", line ([0-9]*)",
            "selector": "source.css.less",

            "variants" : 
            [
                {
                    "name": "Main LESS and Minify",
                    "cmd": ["$packages\\LESS-build\\dotless.Compiler.exe", "-m", "main.less", "main.min.css"],
                    "file_regex": "^[ ]*File \"(...*?)\", line ([0-9]*)",
                    "selector": "source.css.less"
                }
            ]
        }
    ]
}