do not use python-apt

bin/simple-apt-update

@@ -4,8 +4,7 @@ import subprocess
 import selectors
 import html
 import gi
-import apt
+import os
-import apt.progress
 
 gi.require_version('Gtk', '3.0')
 gi.require_version('Gdk', '3.0')
@@ -21,75 +20,6 @@ except ImportError:
     print("ERROR: Could not import Gtk")
 
 
-class AptFetchProgress(apt.progress.base.AcquireProgress):
-    def __init__(self, update_window):
-        super().__init__()
-        self.update_window = update_window
-
-    def done(self, item):
-        super().done(item)
-        self.update_window.append("Done fetching package updates.")
-
-    def fail(self, item):
-        super().fail(item)
-        self.update_window.append(
-            "ERROR: The following item could not be downloaded: %s" % item.uri)
-
-    def fetch(self, item):
-        super().fetch(item)
-        self.update_window.append(
-            "INFO: The following item was downloaded: %s" % item.uri)
-
-    def ims_hit(self, item):
-        super().ims_hit(item)
-        self.update_window.append(
-            "INFO: The following item was found in the cache: %s" % item.uri)
-
-    def media_change(self, str, drive):
-        super().media_change(str, drive)
-        self.update_window.append(
-            "ERROR: Media changes are not supported (str=%s, drive=%s)" %
-            (str, drive))
-        return False
-
-    def pulse(self, owner):
-        super().pulse(owner)
-        return True
-
-
-class AptInstallProgress(apt.progress.base.InstallProgress):
-    def __init__(self, update_window):
-        super().__init__()
-        self.update_window = update_window
-        self.count = 0
-
-    def conffile(self, current, new):
-        super().conffile(current, new)
-        self.update_window.append_mesg(
-            "WARNING",
-            "The following configuration file was not modified: %s" %
-            current)
-
-    def error(self, pkg, errormsg):
-        super().error(pkg, errormsg)
-        self.update_window.append_mesg(
-            "ERROR",
-            "Installation of package %s failed: %s" % (pkg, errormsg))
-
-    def processing(self, pkg, stage):
-        super().error(pkg, stage)
-        self.update_window.append_mesg(
-            "INFO",
-            "Processing package %s, stage %s" % (pkg, stage))
-
-    def dpkg_status_change(self, pkg, status):
-        super().dpkg_status_change(pkg, status)
-        print("dpkg_status_change: pkg=%s status=%s" % (pkg, status))
-        self.update_window.append_mesg(
-            "INFO",
-            "Package %s is now has status %s" % (pkg, status))
-
-
 class UpdateWindow(Gtk.ApplicationWindow):
     def clear(self):
         self.buffer.set_text("")
@@ -146,9 +76,11 @@ class UpdateWindow(Gtk.ApplicationWindow):
     def insert(self, text, iter):
         self.buffer.insert(iter, text + "\n")
 
-    def run(self, args, ignore_stderr=False, output_msg=None, empty_msg=None):
+    def run(self, args, ignore_stderr=False, output_msg=None,
+            empty_msg=None, env={}):
         p = subprocess.Popen(
-            args, stdout=subprocess.PIPE, stderr=subprocess.PIPE, shell=False)
+            args, stdout=subprocess.PIPE, stderr=subprocess.PIPE, shell=False,
+            env=dict(os.environ, **env))
 
         sel = selectors.DefaultSelector()
         sel.register(p.stdout, selectors.EVENT_READ)
@@ -163,10 +95,10 @@ class UpdateWindow(Gtk.ApplicationWindow):
 
                 if data:
                     if key.fileobj is p.stdout:
-                        self.append(data)
+                        self.append_mesg("STDOUT", data)
                         output = True
                     elif not ignore_stderr:
-                        self.append(data)
+                        self.append_mesg("STDERR", data)
 
                 exit_code = p.poll()
 
@@ -181,23 +113,43 @@ class UpdateWindow(Gtk.ApplicationWindow):
                     done = True
                     break
 
-        if not error:
+        if error:
+            return False
+        else:
             if output:
                 if output_msg is not None:
                     self.prepend_mesg("INFO", output_msg)
             elif empty_msg is not None:
                 self.append_mesg("INFO", empty_msg)
 
+            return True
+
+    def lock(self):
+        self.update_button.set_sensitive(False)
+        self.upgrade_button.set_sensitive(False)
+        self.list_button.set_sensitive(False)
+
+    def unlock(self):
+        self.update_button.set_sensitive(True)
+        self.upgrade_button.set_sensitive(True)
+        self.list_button.set_sensitive(True)
+
     def on_upgrade(self, *args):
-        self.cache.open(None)
+        self.clear()
-        self.cache.upgrade(True)
+        self.run(
-        self.cache.commit(AptFetchProgress(self), AptInstallProgress(self))
+            ['/usr/bin/apt-get', '-y', 'full-upgrade'],
+            env={'DEBIAN_FRONTEND': 'noninteractive'})
+        self.append_mesg("INFO", "Upgrade done.")
 
     def on_update(self, *args):
-        self.cache.update()
+        self.clear()
+        self.run(
+            ['/usr/bin/apt-get', '-y', 'update'],
+            env={'DEBIAN_FRONTEND': 'noninteractive'})
         self.append_mesg("INFO", "The package cache was updated.")
 
     def on_list(self, *args):
+        self.clear()
         self.run(
             ['/usr/bin/apt', '-qq', 'list', '--upgradable'],
             ignore_stderr=True,
@@ -208,7 +160,9 @@ class UpdateWindow(Gtk.ApplicationWindow):
         self.app.quit()
 
     def __init__(self, app):
-        super(UpdateWindow, self).__init__(application=app, title="Simple APT Update")
+        super(UpdateWindow, self).__init__(
+            application=app,
+            title="Simple APT Update")
         self.app = app
         self.init_ui()
 
@@ -255,19 +209,13 @@ class UpdateWindow(Gtk.ApplicationWindow):
         self.scrolledwindow.add(text_view)
         hbox.pack_start(self.scrolledwindow, True, True, 0)
 
-        self.cache = apt.Cache()
-        self.cache.update()
-        self.append_mesg("INFO", "The package cache was updated.")
-
-        self.on_update()
-        self.clear()
-        self.on_list()
-
 
 def on_activate(app):
     win = UpdateWindow(app)
     win.present()
     win.show_all()
+    win.on_update()
+    win.on_list()
 
 
 app = Gtk.Application(application_id='org.linuxfoo.SimpleAptUpdate')