compassClean task tries to pass --sourcemap parameter to the 'compass clean' command

[antony]

When adding sourcemap generation to the compass configuration:

compass {
   sourcemap = true
}

Error is:

:compassClean FAILED

./gradlew clean
:compassClean
Error: invalid option: --sourcemap

Usage: compass clean [path/to/project] [options]

and the build fails.

[antony]

We were using 2.0.4, it's fixed in 2.0.5.