and with that, we no longer depend on tornado

Makefile

@@ -37,7 +37,7 @@ install_deps_amd64:
 	sudo apt-get install grub-efi-amd64-signed
 
 install_deps: install_deps_$(ARCH)
-	sudo apt-get install python3-urwid python3-pyudev python3-nose python3-flake8 python3-yaml python3-tornado git bzr ubuntu-cloudimage-keyring python3-coverage ovmf shim shim-signed grub-pc-bin
+	sudo apt-get install python3-urwid python3-pyudev python3-nose python3-flake8 python3-yaml git bzr ubuntu-cloudimage-keyring python3-coverage ovmf shim shim-signed grub-pc-bin
 
 dryrun: probert
 	$(MAKE) ui-view DRYRUN="--dry-run --uefi --install"

debian/control

@@ -40,7 +40,6 @@ Description: Ubuntu Server Installer
 Package: subiquitycore
 Architecture: all
 Depends: probert,
-         python3-tornado,
          python3-urwid (>= 1.2.1),
          python3-yaml,
          ${misc:Depends},

installer/geninstaller

@@ -58,7 +58,6 @@ INSTALLER_DEPS=(
   "python3-urwid"
   "python3-pyudev"
   "python-urwid"
-  "python3-tornado"
   "probert"
   "xfsprogs"
   "curtin"

requirements.txt

@@ -4,4 +4,3 @@ nose-cov
 nose
 flake8
 python3-parted
-tornado

subiquitycore/core.py

@@ -17,9 +17,6 @@ from concurrent import futures
 import logging
 import urwid
 
-from tornado.ioloop import IOLoop
-from tornado.util import import_object
-
 from subiquitycore.signals import Signal
 from subiquitycore.palette import STYLES, STYLES_MONO
 from subiquitycore.prober import Prober, ProberException
@@ -134,19 +131,17 @@ class Application:
                 additional_opts['screen'].set_terminal_properties(colors=256)
                 additional_opts['screen'].reset_default_terminal_palette()
 
-            evl = urwid.TornadoEventLoop(IOLoop())
             self.common['loop'] = urwid.MainLoop(
-                self.common['ui'], palette, event_loop=evl, **additional_opts)
+                self.common['ui'], palette, **additional_opts)
             log.debug("Running event loop: {}".format(
                 self.common['loop'].event_loop))
 
         try:
             self.common['loop'].set_alarm_in(0.05, self.next_screen)
+            controllers_mod = __import__('%s.controllers' % self.project, None, None, [''])
             for k in self.common['controllers']:
                 log.debug("Importing controller: {}".format(k))
-                klass = import_object(
-                    ("%s.controllers.{}Controller" % self.project).format(
-                        k))
+                klass = getattr(controllers_mod, k+"Controller")
                 self.common['controllers'][k] = klass(self.common)
             log.debug("*** %s", self.common['controllers'])
             self._connect_base_signals()