Try using Paver as build tool

MANIFEST.in

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+include setup.py
+include pavement.py
+include paver-minilib.zip

pavement.py

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+import os
+import subprocess
+
+from paver.easy import *
+from paver.setuputils import setup
+
+setup(
+    name='robotframework-htmlchecker',
+    package_dir = {'': 'src'},
+    packages=['HTMLChecker', 'HTMLChecker.lib'],
+    version='0.1',
+    url='https://github.com/robotframework/HTMLChecker',
+    author='Robot Framework developers',
+    author_email='robotframework@gmail.com'
+)
+
+@task
+@needs('generate_setup', 'minilib', 'setuptools.command.sdist')
+def sdist():
+    """Overrides sdist to make sure that our setup.py is generated."""
+    pass
+
+@task
+@needs('generate_setup', 'minilib', 'setuptools.command.bdist_wininst')
+def bdist_wininst():
+    """Overrides sdist to make sure that our setup.py is generated."""
+    pass
+
+@task
+def atest():
+    testdir = os.path.join(os.path.dirname(__file__), 'test')
+    cmd = ['pybot', '-d', os.path.join(testdir, 'results'), testdir]
+    env = os.environ
+    env.update({'PYTHONPATH': 'src'})
+    subprocess.call(cmd, shell=(os.sep=='\\'), env=env)
+