``` Failed to eval contri...
# general
a
Copy code
Failed to eval contrib/haskell/src/python/pants/contrib/haskell/tasks:tasks
Failed to eval 'file contrib/haskell/src/python/pants/contrib/haskell/tasks/stack_build.py':
  File "[srcroot]/pants/contrib/haskell/tasks/stack_build.py", line 8, in <module>
    from pants.contrib.haskell.tasks.stack_task import StackTask
  File "[srcroot]/pants/contrib/haskell/tasks/stack_task.py", line 11, in <module>
    from pants.backend.core.tasks.task import Task
No module named tasks.task