message: Install forgotten files.
diff: @@ -27,6 +27,7 @@ def configure(prefix='.', coverage: bool = False):
  # Sources
  sources = drake.nodes(
  'src/drake/__init__.py',
  + 'src/drake/command.py',
  'src/drake/enumeration.py',
  'src/drake/deprecation.py',
  'src/drake/docker.py',
  @@ -38,10 +39,12 @@ def configure(prefix='.', coverage: bool = False):
  'src/drake/cxx/ipp.py',
  'src/drake/cxx/opengl.py',
  'src/drake/cxx/qt.py',
  + 'src/drake/cxx/qt5.py',
  'src/drake/cxx/sdl.py',
  'src/drake/cxx/sofia_sip.py',
  'src/drake/debug.py',
  'src/drake/git.py',
  + 'src/drake/gnu.py',
  'src/drake/go/__init__.py',
  'src/drake/log.py',
  'src/drake/ocaml/__init__.py',
  