Add clint as a dependency.

Since clint 0.3, it supports Python 3.

hy/errors.py

@@ -21,10 +21,12 @@
 # FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 # DEALINGS IN THE SOFTWARE.
 
-from hy._compat import PY3
-
 import traceback
 
+from clint.textui import colored
+
+from hy._compat import PY3
+
 
 class HyError(Exception):
     """
@@ -34,44 +36,6 @@ class HyError(Exception):
     pass
 
 
-try:
-    from clint.textui import colored
-except Exception:
-    class colored:
-
-        @staticmethod
-        def black(foo):
-            return foo
-
-        @staticmethod
-        def red(foo):
-            return foo
-
-        @staticmethod
-        def green(foo):
-            return foo
-
-        @staticmethod
-        def yellow(foo):
-            return foo
-
-        @staticmethod
-        def blue(foo):
-            return foo
-
-        @staticmethod
-        def magenta(foo):
-            return foo
-
-        @staticmethod
-        def cyan(foo):
-            return foo
-
-        @staticmethod
-        def white(foo):
-            return foo
-
-
 class HyCompileError(HyError):
     def __init__(self, exception, traceback=None):
         self.exception = exception

setup.py

@@ -45,7 +45,7 @@ long_description = """Hy is a Python <--> Lisp layer. It helps
 make things work nicer, and lets Python and the Hy lisp variant play
 nice together. """
 
-install_requires = ['rply>=0.7.0', 'astor>=0.3']
+install_requires = ['rply>=0.7.0', 'astor>=0.3', 'clint>=0.4']
 if sys.version_info[:2] < (2, 7):
     install_requires.append('argparse>=1.2.1')
     install_requires.append('importlib>=1.0.2')