Switch to setuptools and find_packages

Any reasonably modern Python distribution includes setuptools.
So the workaround, that was useful for Python 2.x, is no longer
necessary and can be removed.
This allows using `find_packages` instead of maintaining an explicit
list of packages which is error-prone.

Author: Flamefire

setup.py

@@ -31,10 +31,7 @@
 import glob
 import os
 import logging
-try:
-    from distutils.core import setup
-except ImportError:
-    from setuptools import setup
+from setuptools import setup, find_packages
 
 from easybuild.tools.version import VERSION
 
@@ -68,16 +65,6 @@ def find_rel_test():
     return res
 
 
-easybuild_packages = [
-    "easybuild", "easybuild.base",
-    "easybuild.framework", "easybuild.framework.easyconfig", "easybuild.framework.easyconfig.format",
-    "easybuild.toolchains", "easybuild.toolchains.compiler", "easybuild.toolchains.mpi",
-    "easybuild.toolchains.fft", "easybuild.toolchains.linalg", "easybuild.tools", "easybuild.tools.containers",
-    "easybuild.tools.deprecated", "easybuild.tools.job", "easybuild.tools.toolchain",
-    "easybuild.tools.module_naming_scheme", "easybuild.tools.package", "easybuild.tools.package.package_naming_scheme",
-    "easybuild.tools.py2vs3", "easybuild.tools.repository", "test.framework", "test",
-]
-
 setup(
     name="easybuild-framework",
     version=str(VERSION),
@@ -88,7 +75,7 @@ def find_rel_test():
     license="GPLv2",
     keywords="software build building installation installing compilation HPC scientific",
     url="https://easybuild.io",
-    packages=easybuild_packages,
+    packages=find_packages(),
     package_dir={'test.framework': 'test/framework'},
     package_data={'test.framework': find_rel_test()},
     scripts=[