+++ This bug was initially created as a clone of Bug #1547655 +++

Cloning to Fedora since it is now also broken in F29.

This is bug in dnf.

======================================================================
ERROR: test_wildcard_with_multilib_blacklist (tests.test_gather.DNFDepsolvingTestCase)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/builddir/build/BUILD/pungi-4.1.22/tests/test_gather.py", line 850, in test_wildcard_with_multilib_blacklist
    pkg_map = self.go(packages, None, multilib_blacklist=['dummy-glibc*'])
  File "/builddir/build/BUILD/pungi-4.1.22/tests/test_gather.py", line 1723, in go
    self.dnf = self.dnf_instance(arch, lookaside=lookaside, persistdir=self.tmp_dir)
  File "/builddir/build/BUILD/pungi-4.1.22/tests/test_gather.py", line 1764, in dnf_instance
    dnf.fill_sack(load_system_repo=False, load_available_repos=True)
  File "/usr/lib/python3.6/site-packages/dnf/base.py", line 437, in fill_sack
    self._setup_modules()
  File "/usr/lib/python3.6/site-packages/dnf/base.py", line 224, in _setup_modules
    self.repo_module_dict.read_all_module_confs()
  File "/usr/lib/python3.6/site-packages/dnf/module/repo_module_dict.py", line 461, in read_all_module_confs
    module_reader = ModuleReader(self.get_modules_dir())
  File "/usr/lib/python3.6/site-packages/dnf/module/repo_module_dict.py", line 480, in get_modules_dir
    ensure_dir(modules_dir)
  File "/usr/lib/python3.6/site-packages/dnf/util.py", line 124, in ensure_dir
    raise e
  File "/usr/lib/python3.6/site-packages/dnf/util.py", line 121, in ensure_dir
    os.makedirs(dname, mode=0o755)
  File "/usr/lib/python3.6/os.py", line 220, in makedirs
    mkdir(name, mode)
PermissionError: [Errno 13] Permission denied: '/etc/dnf/modules.d'

--- Additional comment from Daniel Mach on 2018-02-28 03:45:16 EST ---

What needs to be fixed:
* spec to provide the directory.
* prevent creating the directory when reading modules (the problem is with non-root user here obviously)