import absolute path doesn't work

[li-yechao]

this doesn't work

@value tests: "/absolute/path/to/activity-indicator.css";
@value test from tests;
.root {
  composes: test;
}

this is ok

@value tests: "relative/path/to/activity-indicator.css";
@value test from tests;
.root {
  composes: test;
}

but variable is ok both, just composes is not work