lazy load modules

pipenv/cli.py

@@ -16,7 +16,7 @@ for module in [
     'urllib3', 'background', 'dotenv', 'delegator', 'pexpect',
     'requests', 'pip', 'pipfile', 'pipdeptree', 'requirements',
     'semver', 'flake8', 'pipreqs', 'blindspin', 'click_didyoumean',
-    '.project', '.utils'
+    '.project', '.utils', 'click', 'dotenv'
 ]:
     lazyload.make_lazy(module)
 

pipenv/utils.py

@@ -28,6 +28,13 @@ try:
 except ImportError:
     from pathlib2 import Path
 
+import lazyload
+for module in [
+    'piptools', 'contetxlib', 'distutils'
+]:
+    lazyload.make_lazy(module)
+
+
 from distutils.spawn import find_executable
 from contextlib import contextmanager
 from piptools.resolver import Resolver