Port from PyQt5 to PySide2

33 files changed, 86 insertions, 106 deletions

diff --git a/desktop/README.md b/desktop/README.md
index bba11d41..83f0843d 100644
--- a/desktop/README.md
+++ b/desktop/README.md
@@ -8,29 +8,6 @@
 
 If you're using Linux, install `tor` and `obfs4proxy` from either the [official Debian repository](https://support.torproject.org/apt/tor-deb-repo/), or from your package manager.
 
-Then download Qt 5.14.0 for Linux:
-
-```sh
-cd ~/Downloads
-wget https://download.qt.io/official_releases/qt/5.14/5.14.0/qt-opensource-linux-x64-5.14.0.run
-```
-
-If you'd like to check to make sure you have the exact installer I have, here is the sha256 checksum:
-
-```sh
-sha256sum qt-opensource-linux-x64-5.14.0.run
-4379f147c6793ec7e7349d2f9ee7d53b8ab6ea4e4edf8ee0574a75586a6a6e0e  qt-opensource-linux-x64-5.14.0.run
-```
-
-Then make it executable and install Qt:
-
-```sh
-chmod +x qt-opensource-linux-x64-5.14.0.run
-./qt-opensource-linux-x64-5.14.0.run
-```
-
-You have to create a Qt account and login to install Qt. Choose the default installation folder in your home directory. The only component you need is `Qt 5.14.0` > `Desktop gcc 64-bit`.
-
 #### macOS
 
 #### Windows
diff --git a/desktop/pyproject.toml b/desktop/pyproject.toml
index 0dcaa5e6..3675de73 100644
--- a/desktop/pyproject.toml
+++ b/desktop/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.briefcase]
 project_name = "OnionShare"
-bundle = "org.onionshare.OnionShare"
+bundle = "org.onionshare"
 version = "2.3.dev1"
 url = "https://onionshare.org"
 license = "GPLv3"
@@ -21,9 +21,8 @@ requires = [
     "flask-socketio",
     "psutil",
     "pycryptodome",
-    "PyQt5==5.14",
-    "PyQt5-sip",
     "PySocks",
+    "pyside2",
     "qrcode",
     "requests",
     "stem",
@@ -35,7 +34,12 @@ requires = []
 
 [tool.briefcase.app.onionshare.linux]
 requires = []
-system_requires = ["tor", "obfs4proxy"]
+system_requires = [
+    "tor",
+    "obfs4proxy",
+    "gcc",
+    "python3-dev",
+]
 
 [tool.briefcase.app.onionshare.windows]
 requires = ["pywin32"]
diff --git a/desktop/src/onionshare/__init__.py b/desktop/src/onionshare/__init__.py
index a86c6bbc..e69de29b 100644
--- a/desktop/src/onionshare/__init__.py
+++ b/desktop/src/onionshare/__init__.py
@@ -1 +0,0 @@
-from .__main__ import *
diff --git a/desktop/src/onionshare/__main__.py b/desktop/src/onionshare/__main__.py
index f0d9a3b0..9489481d 100644
--- a/desktop/src/onionshare/__main__.py
+++ b/desktop/src/onionshare/__main__.py
@@ -27,7 +27,7 @@ import signal
 import json
 import psutil
 import getpass
-from PyQt5 import QtCore, QtWidgets
+from PySide2 import QtCore, QtWidgets
 
 from onionshare_cli.common import Common
 
diff --git a/desktop/src/onionshare/main_window.py b/desktop/src/onionshare/main_window.py
index 26cad2fa..38a6b275 100644
--- a/desktop/src/onionshare/main_window.py
+++ b/desktop/src/onionshare/main_window.py
@@ -18,7 +18,7 @@ You should have received a copy of the GNU General Public License
 along with this program.  If not, see <http://www.gnu.org/licenses/>.
 """
 
-from PyQt5 import QtCore, QtWidgets, QtGui
+from PySide2 import QtCore, QtWidgets, QtGui
 
 from onionshare_cli.web import Web
 
diff --git a/desktop/src/onionshare/resources/onionshare-128.png b/desktop/src/onionshare/resources/onionshare-128.png
new file mode 100644
index 00000000..856ab4e7
--- /dev/null
+++ b/desktop/src/onionshare/resources/onionshare-128.png
diff --git a/desktop/src/onionshare/resources/onionshare-16.png b/desktop/src/onionshare/resources/onionshare-16.png
new file mode 100644
index 00000000..dea20940
--- /dev/null
+++ b/desktop/src/onionshare/resources/onionshare-16.png
diff --git a/desktop/src/onionshare/resources/onionshare-256.png b/desktop/src/onionshare/resources/onionshare-256.png
new file mode 100644
index 00000000..b47cd94a
--- /dev/null
+++ b/desktop/src/onionshare/resources/onionshare-256.png
diff --git a/desktop/src/onionshare/resources/onionshare-32.png b/desktop/src/onionshare/resources/onionshare-32.png
new file mode 100644
index 00000000..14c849c9
--- /dev/null
+++ b/desktop/src/onionshare/resources/onionshare-32.png
diff --git a/desktop/src/onionshare/resources/onionshare-512.png b/desktop/src/onionshare/resources/onionshare-512.png
new file mode 100644
index 00000000..a4810d04
--- /dev/null
+++ b/desktop/src/onionshare/resources/onionshare-512.png
diff --git a/desktop/src/onionshare/resources/onionshare-64.png b/desktop/src/onionshare/resources/onionshare-64.png
new file mode 100644
index 00000000..8468dc52
--- /dev/null
+++ b/desktop/src/onionshare/resources/onionshare-64.png
diff --git a/desktop/src/onionshare/settings_dialog.py b/desktop/src/onionshare/settings_dialog.py
index f22e2464..91691cc6 100644
--- a/desktop/src/onionshare/settings_dialog.py
+++ b/desktop/src/onionshare/settings_dialog.py
@@ -18,7 +18,7 @@ You should have received a copy of the GNU General Public License
 along with this program.  If not, see <http://www.gnu.org/licenses/>.
 """
 
-from PyQt5 import QtCore, QtWidgets, QtGui
+from PySide2 import QtCore, QtWidgets, QtGui
 import sys
 import platform
 import datetime
@@ -41,7 +41,7 @@ class SettingsDialog(QtWidgets.QDialog):
     Settings dialog.
     """
 
-    settings_saved = QtCore.pyqtSignal()
+    settings_saved = QtCore.Signal()
 
     def __init__(self, common):
         super(SettingsDialog, self).__init__()
diff --git a/desktop/src/onionshare/tab/mode/__init__.py b/desktop/src/onionshare/tab/mode/__init__.py
index 06500aea..f92632f0 100644
--- a/desktop/src/onionshare/tab/mode/__init__.py
+++ b/desktop/src/onionshare/tab/mode/__init__.py
@@ -18,7 +18,7 @@ You should have received a copy of the GNU General Public License
 along with this program.  If not, see <http://www.gnu.org/licenses/>.
 """
 
-from PyQt5 import QtCore, QtWidgets, QtGui
+from PySide2 import QtCore, QtWidgets, QtGui
 
 from onionshare_cli.common import AutoStopTimer
 
@@ -36,14 +36,14 @@ class Mode(QtWidgets.QWidget):
     The class that all modes inherit from
     """
 
-    start_server_finished = QtCore.pyqtSignal()
-    stop_server_finished = QtCore.pyqtSignal()
-    starting_server_step2 = QtCore.pyqtSignal()
-    starting_server_step3 = QtCore.pyqtSignal()
-    starting_server_error = QtCore.pyqtSignal(str)
-    starting_server_early = QtCore.pyqtSignal()
-    set_server_active = QtCore.pyqtSignal(bool)
-    change_persistent = QtCore.pyqtSignal(int, bool)
+    start_server_finished = QtCore.Signal()
+    stop_server_finished = QtCore.Signal()
+    starting_server_step2 = QtCore.Signal()
+    starting_server_step3 = QtCore.Signal()
+    starting_server_error = QtCore.Signal(str)
+    starting_server_early = QtCore.Signal()
+    set_server_active = QtCore.Signal(bool)
+    change_persistent = QtCore.Signal(int, bool)
 
     def __init__(self, tab):
         super(Mode, self).__init__()
diff --git a/desktop/src/onionshare/tab/mode/chat_mode/__init__.py b/desktop/src/onionshare/tab/mode/chat_mode/__init__.py
index f96e2e77..25a02969 100644
--- a/desktop/src/onionshare/tab/mode/chat_mode/__init__.py
+++ b/desktop/src/onionshare/tab/mode/chat_mode/__init__.py
@@ -22,7 +22,7 @@ import os
 import random
 import string
 
-from PyQt5 import QtCore, QtWidgets, QtGui
+from PySide2 import QtCore, QtWidgets, QtGui
 
 from onionshare_cli.onion import *
 from onionshare_cli.common import Common
@@ -39,8 +39,8 @@ class ChatMode(Mode):
     Parts of the main window UI for sharing files.
     """
 
-    success = QtCore.pyqtSignal()
-    error = QtCore.pyqtSignal(str)
+    success = QtCore.Signal()
+    error = QtCore.Signal(str)
 
     def init(self):
         """
diff --git a/desktop/src/onionshare/tab/mode/file_selection.py b/desktop/src/onionshare/tab/mode/file_selection.py
index faefda0e..54d9ea83 100644
--- a/desktop/src/onionshare/tab/mode/file_selection.py
+++ b/desktop/src/onionshare/tab/mode/file_selection.py
@@ -19,7 +19,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 """
 
 import os
-from PyQt5 import QtCore, QtWidgets, QtGui
+from PySide2 import QtCore, QtWidgets, QtGui
 
 from ... import strings
 from ...widgets import Alert, AddFileDialog
@@ -104,8 +104,8 @@ class FileList(QtWidgets.QListWidget):
     The list of files and folders in the GUI.
     """
 
-    files_dropped = QtCore.pyqtSignal()
-    files_updated = QtCore.pyqtSignal()
+    files_dropped = QtCore.Signal()
+    files_updated = QtCore.Signal()
 
     def __init__(self, common, background_image_filename, header_text, parent=None):
         super(FileList, self).__init__(parent)
diff --git a/desktop/src/onionshare/tab/mode/history.py b/desktop/src/onionshare/tab/mode/history.py
index caa36387..3e9c0571 100644
--- a/desktop/src/onionshare/tab/mode/history.py
+++ b/desktop/src/onionshare/tab/mode/history.py
@@ -22,7 +22,7 @@ import time
 import subprocess
 import os
 from datetime import datetime
-from PyQt5 import QtCore, QtWidgets, QtGui
+from PySide2 import QtCore, QtWidgets, QtGui
 
 from ... import strings
 from ...widgets import Alert
diff --git a/desktop/src/onionshare/tab/mode/mode_settings_widget.py b/desktop/src/onionshare/tab/mode/mode_settings_widget.py
index 8c070897..39226540 100644
--- a/desktop/src/onionshare/tab/mode/mode_settings_widget.py
+++ b/desktop/src/onionshare/tab/mode/mode_settings_widget.py
@@ -18,7 +18,7 @@ You should have received a copy of the GNU General Public License
 along with this program.  If not, see <http://www.gnu.org/licenses/>.
 """
 
-from PyQt5 import QtCore, QtWidgets
+from PySide2 import QtCore, QtWidgets
 
 from ... import strings
 
@@ -28,7 +28,7 @@ class ModeSettingsWidget(QtWidgets.QWidget):
     All of the common settings for each mode are in this widget
     """
 
-    change_persistent = QtCore.pyqtSignal(int, bool)
+    change_persistent = QtCore.Signal(int, bool)
 
     def __init__(self, common, tab, mode_settings):
         super(ModeSettingsWidget, self).__init__()
diff --git a/desktop/src/onionshare/tab/mode/receive_mode/__init__.py b/desktop/src/onionshare/tab/mode/receive_mode/__init__.py
index 35b4b7e9..95d1ecbe 100644
--- a/desktop/src/onionshare/tab/mode/receive_mode/__init__.py
+++ b/desktop/src/onionshare/tab/mode/receive_mode/__init__.py
@@ -19,7 +19,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 """
 
 import os
-from PyQt5 import QtCore, QtWidgets, QtGui
+from PySide2 import QtCore, QtWidgets, QtGui
 
 from onionshare_cli.web import Web
 
diff --git a/desktop/src/onionshare/tab/mode/share_mode/__init__.py b/desktop/src/onionshare/tab/mode/share_mode/__init__.py
index 3c34ab46..ccf85dbd 100644
--- a/desktop/src/onionshare/tab/mode/share_mode/__init__.py
+++ b/desktop/src/onionshare/tab/mode/share_mode/__init__.py
@@ -19,7 +19,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 """
 
 import os
-from PyQt5 import QtCore, QtWidgets, QtGui
+from PySide2 import QtCore, QtWidgets, QtGui
 
 from onionshare_cli.onion import *
 from onionshare_cli.common import Common
@@ -427,7 +427,7 @@ class ShareMode(Mode):
 
 
 class ZipProgressBar(QtWidgets.QProgressBar):
-    update_processed_size_signal = QtCore.pyqtSignal(int)
+    update_processed_size_signal = QtCore.Signal(int)
 
     def __init__(self, common, total_files_size):
         super(ZipProgressBar, self).__init__()
diff --git a/desktop/src/onionshare/tab/mode/share_mode/threads.py b/desktop/src/onionshare/tab/mode/share_mode/threads.py
index 500b6525..860c2d26 100644
--- a/desktop/src/onionshare/tab/mode/share_mode/threads.py
+++ b/desktop/src/onionshare/tab/mode/share_mode/threads.py
@@ -18,7 +18,7 @@ You should have received a copy of the GNU General Public License
 along with this program.  If not, see <http://www.gnu.org/licenses/>.
 """
 
-from PyQt5 import QtCore
+from PySide2 import QtCore
 
 
 class CompressThread(QtCore.QThread):
@@ -26,8 +26,8 @@ class CompressThread(QtCore.QThread):
     Compresses files to be shared
     """
 
-    success = QtCore.pyqtSignal()
-    error = QtCore.pyqtSignal(str)
+    success = QtCore.Signal()
+    error = QtCore.Signal(str)
 
     def __init__(self, mode):
         super(CompressThread, self).__init__()
diff --git a/desktop/src/onionshare/tab/mode/website_mode/__init__.py b/desktop/src/onionshare/tab/mode/website_mode/__init__.py
index 6d3d62a7..325b22f1 100644
--- a/desktop/src/onionshare/tab/mode/website_mode/__init__.py
+++ b/desktop/src/onionshare/tab/mode/website_mode/__init__.py
@@ -22,7 +22,7 @@ import os
 import random
 import string
 
-from PyQt5 import QtCore, QtWidgets, QtGui
+from PySide2 import QtCore, QtWidgets, QtGui
 
 from onionshare_cli.onion import *
 from onionshare_cli.common import Common
@@ -41,8 +41,8 @@ class WebsiteMode(Mode):
     Parts of the main window UI for sharing files.
     """
 
-    success = QtCore.pyqtSignal()
-    error = QtCore.pyqtSignal(str)
+    success = QtCore.Signal()
+    error = QtCore.Signal(str)
 
     def init(self):
         """
diff --git a/desktop/src/onionshare/tab/server_status.py b/desktop/src/onionshare/tab/server_status.py
index d14aa41c..a1041c92 100644
--- a/desktop/src/onionshare/tab/server_status.py
+++ b/desktop/src/onionshare/tab/server_status.py
@@ -20,8 +20,8 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 import platform
 import textwrap
-from PyQt5 import QtCore, QtWidgets, QtGui
-from PyQt5.QtCore import Qt
+from PySide2 import QtCore, QtWidgets, QtGui
+from PySide2.QtCore import Qt
 
 from .. import strings
 from ..widgets import Alert
@@ -34,13 +34,13 @@ class ServerStatus(QtWidgets.QWidget):
     The server status chunk of the GUI.
     """
 
-    server_started = QtCore.pyqtSignal()
-    server_started_finished = QtCore.pyqtSignal()
-    server_stopped = QtCore.pyqtSignal()
-    server_canceled = QtCore.pyqtSignal()
-    button_clicked = QtCore.pyqtSignal()
-    url_copied = QtCore.pyqtSignal()
-    hidservauth_copied = QtCore.pyqtSignal()
+    server_started = QtCore.Signal()
+    server_started_finished = QtCore.Signal()
+    server_stopped = QtCore.Signal()
+    server_canceled = QtCore.Signal()
+    button_clicked = QtCore.Signal()
+    url_copied = QtCore.Signal()
+    hidservauth_copied = QtCore.Signal()
 
     STATUS_STOPPED = 0
     STATUS_WORKING = 1
diff --git a/desktop/src/onionshare/tab/tab.py b/desktop/src/onionshare/tab/tab.py
index b3f9533d..a511557b 100644
--- a/desktop/src/onionshare/tab/tab.py
+++ b/desktop/src/onionshare/tab/tab.py
@@ -19,7 +19,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 """
 
 import queue
-from PyQt5 import QtCore, QtWidgets, QtGui
+from PySide2 import QtCore, QtWidgets, QtGui
 
 from onionshare_cli.onionshare import OnionShare
 from onionshare_cli.web import Web
@@ -80,9 +80,9 @@ class Tab(QtWidgets.QWidget):
     A GUI tab, you know, sort of like in a web browser
     """
 
-    change_title = QtCore.pyqtSignal(int, str)
-    change_icon = QtCore.pyqtSignal(int, str)
-    change_persistent = QtCore.pyqtSignal(int, bool)
+    change_title = QtCore.Signal(int, str)
+    change_icon = QtCore.Signal(int, str)
+    change_persistent = QtCore.Signal(int, bool)
 
     def __init__(
         self,
diff --git a/desktop/src/onionshare/tab_widget.py b/desktop/src/onionshare/tab_widget.py
index 911fbc2e..452b56bb 100644
--- a/desktop/src/onionshare/tab_widget.py
+++ b/desktop/src/onionshare/tab_widget.py
@@ -18,7 +18,7 @@ You should have received a copy of the GNU General Public License
 along with this program.  If not, see <http://www.gnu.org/licenses/>.
 """
 
-from PyQt5 import QtCore, QtWidgets, QtGui
+from PySide2 import QtCore, QtWidgets, QtGui
 
 from onionshare_cli.mode_settings import ModeSettings
 
@@ -33,7 +33,7 @@ class TabWidget(QtWidgets.QTabWidget):
     A custom tab widget, that has a "+" button for adding new tabs
     """
 
-    bring_to_front = QtCore.pyqtSignal()
+    bring_to_front = QtCore.Signal()
 
     def __init__(self, common, system_tray, status_bar):
         super(TabWidget, self).__init__()
@@ -259,7 +259,7 @@ class TabBar(QtWidgets.QTabBar):
     A custom tab bar
     """
 
-    move_new_tab_button = QtCore.pyqtSignal()
+    move_new_tab_button = QtCore.Signal()
 
     def __init__(self):
         super(TabBar, self).__init__()
diff --git a/desktop/src/onionshare/threads.py b/desktop/src/onionshare/threads.py
index bbd8b640..338bbf27 100644
--- a/desktop/src/onionshare/threads.py
+++ b/desktop/src/onionshare/threads.py
@@ -21,7 +21,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 import time
 import json
 import os
-from PyQt5 import QtCore
+from PySide2 import QtCore
 
 from onionshare_cli.onion import (
     TorTooOld,
@@ -44,9 +44,9 @@ class OnionThread(QtCore.QThread):
     Starts the onion service, and waits for it to finish
     """
 
-    success = QtCore.pyqtSignal()
-    success_early = QtCore.pyqtSignal()
-    error = QtCore.pyqtSignal(str)
+    success = QtCore.Signal()
+    success_early = QtCore.Signal()
+    error = QtCore.Signal(str)
 
     def __init__(self, mode):
         super(OnionThread, self).__init__()
@@ -114,8 +114,8 @@ class WebThread(QtCore.QThread):
     Starts the web service
     """
 
-    success = QtCore.pyqtSignal()
-    error = QtCore.pyqtSignal(str)
+    success = QtCore.Signal()
+    error = QtCore.Signal(str)
 
     def __init__(self, mode):
         super(WebThread, self).__init__()
@@ -133,8 +133,8 @@ class AutoStartTimer(QtCore.QThread):
     Waits for a prescribed time before allowing a share to start
     """
 
-    success = QtCore.pyqtSignal()
-    error = QtCore.pyqtSignal(str)
+    success = QtCore.Signal()
+    error = QtCore.Signal(str)
 
     def __init__(self, mode, canceled=False):
         super(AutoStartTimer, self).__init__()
@@ -180,8 +180,8 @@ class EventHandlerThread(QtCore.QThread):
     {"type": "new_share_tab", "filenames": ["file1", "file2"]}
     """
 
-    new_tab = QtCore.pyqtSignal()
-    new_share_tab = QtCore.pyqtSignal(list)
+    new_tab = QtCore.Signal()
+    new_share_tab = QtCore.Signal(list)
 
     def __init__(self, common):
         super(EventHandlerThread, self).__init__()
diff --git a/desktop/src/onionshare/tor_connection_dialog.py b/desktop/src/onionshare/tor_connection_dialog.py
index 7cd09eff..d5fa72a0 100644
--- a/desktop/src/onionshare/tor_connection_dialog.py
+++ b/desktop/src/onionshare/tor_connection_dialog.py
@@ -18,7 +18,7 @@ You should have received a copy of the GNU General Public License
 along with this program.  If not, see <http://www.gnu.org/licenses/>.
 """
 
-from PyQt5 import QtCore, QtWidgets, QtGui
+from PySide2 import QtCore, QtWidgets, QtGui
 
 from onionshare_cli.onion import *
 
@@ -32,7 +32,7 @@ class TorConnectionDialog(QtWidgets.QProgressDialog):
     Connecting to Tor dialog.
     """
 
-    open_settings = QtCore.pyqtSignal()
+    open_settings = QtCore.Signal()
 
     def __init__(self, common, custom_settings=False):
         super(TorConnectionDialog, self).__init__(None)
@@ -123,10 +123,10 @@ class TorConnectionDialog(QtWidgets.QProgressDialog):
 
 
 class TorConnectionThread(QtCore.QThread):
-    tor_status_update = QtCore.pyqtSignal(str, str)
-    connected_to_tor = QtCore.pyqtSignal()
-    canceled_connecting_to_tor = QtCore.pyqtSignal()
-    error_connecting_to_tor = QtCore.pyqtSignal(str)
+    tor_status_update = QtCore.Signal(str, str)
+    connected_to_tor = QtCore.Signal()
+    canceled_connecting_to_tor = QtCore.Signal()
+    error_connecting_to_tor = QtCore.Signal(str)
 
     def __init__(self, common, settings, dialog):
         super(TorConnectionThread, self).__init__()
diff --git a/desktop/src/onionshare/update_checker.py b/desktop/src/onionshare/update_checker.py
index 982c4cb8..be7a5e01 100644
--- a/desktop/src/onionshare/update_checker.py
+++ b/desktop/src/onionshare/update_checker.py
@@ -18,7 +18,7 @@ You should have received a copy of the GNU General Public License
 along with this program.  If not, see <http://www.gnu.org/licenses/>.
 """
 
-from PyQt5 import QtCore
+from PySide2 import QtCore
 import datetime, time, socket, re, platform
 import socks
 from distutils.version import LooseVersion as Version
@@ -57,10 +57,10 @@ class UpdateChecker(QtCore.QObject):
     Only check at most once per day, unless force is True.
     """
 
-    update_available = QtCore.pyqtSignal(str, str, str)
-    update_not_available = QtCore.pyqtSignal()
-    update_error = QtCore.pyqtSignal()
-    update_invalid_version = QtCore.pyqtSignal(str)
+    update_available = QtCore.Signal(str, str, str)
+    update_not_available = QtCore.Signal()
+    update_error = QtCore.Signal()
+    update_invalid_version = QtCore.Signal(str)
 
     def __init__(self, common, onion):
         super(UpdateChecker, self).__init__()
@@ -183,10 +183,10 @@ class UpdateChecker(QtCore.QObject):
 
 
 class UpdateThread(QtCore.QThread):
-    update_available = QtCore.pyqtSignal(str, str, str)
-    update_not_available = QtCore.pyqtSignal()
-    update_error = QtCore.pyqtSignal()
-    update_invalid_version = QtCore.pyqtSignal(str)
+    update_available = QtCore.Signal(str, str, str)
+    update_not_available = QtCore.Signal()
+    update_error = QtCore.Signal()
+    update_invalid_version = QtCore.Signal(str)
 
     def __init__(self, common, onion, force=False):
         super(UpdateThread, self).__init__()
diff --git a/desktop/src/onionshare/widgets.py b/desktop/src/onionshare/widgets.py
index 8ed84c96..6fffd77f 100644
--- a/desktop/src/onionshare/widgets.py
+++ b/desktop/src/onionshare/widgets.py
@@ -18,7 +18,7 @@ You should have received a copy of the GNU General Public License
 along with this program.  If not, see <http://www.gnu.org/licenses/>.
 """
 
-from PyQt5 import QtCore, QtWidgets, QtGui
+from PySide2 import QtCore, QtWidgets, QtGui
 import qrcode
 
 from . import strings
diff --git a/desktop/tests/gui_base_test.py b/desktop/tests/gui_base_test.py
index d70791cb..b1bb7e21 100644
--- a/desktop/tests/gui_base_test.py
+++ b/desktop/tests/gui_base_test.py
@@ -10,7 +10,7 @@ import tempfile
 import secrets
 import platform
 
-from PyQt5 import QtCore, QtTest, QtWidgets
+from PySide2 import QtCore, QtTest, QtWidgets
 
 from onionshare_cli.common import Common
 from onionshare_cli.settings import Settings
diff --git a/desktop/tests/test_gui_receive.py b/desktop/tests/test_gui_receive.py
index f89b69f8..bc50fb4d 100644
--- a/desktop/tests/test_gui_receive.py
+++ b/desktop/tests/test_gui_receive.py
@@ -5,7 +5,7 @@ import shutil
 import sys
 from datetime import datetime, timedelta
 
-from PyQt5 import QtCore, QtTest
+from PySide2 import QtCore, QtTest
 
 from .gui_base_test import GuiBaseTest
 
diff --git a/desktop/tests/test_gui_share.py b/desktop/tests/test_gui_share.py
index 3da6f572..971b97b8 100644
--- a/desktop/tests/test_gui_share.py
+++ b/desktop/tests/test_gui_share.py
@@ -4,7 +4,7 @@ import requests
 import tempfile
 import zipfile
 
-from PyQt5 import QtCore, QtTest
+from PySide2 import QtCore, QtTest
 
 from .gui_base_test import GuiBaseTest
 
diff --git a/desktop/tests/test_gui_tabs.py b/desktop/tests/test_gui_tabs.py
index 5644ea60..4534becf 100644
--- a/desktop/tests/test_gui_tabs.py
+++ b/desktop/tests/test_gui_tabs.py
@@ -1,7 +1,7 @@
 import pytest
 import os
 
-from PyQt5 import QtCore, QtTest, QtWidgets
+from PySide2 import QtCore, QtTest, QtWidgets
 
 from .gui_base_test import GuiBaseTest
 
diff --git a/desktop/tests/test_gui_website.py b/desktop/tests/test_gui_website.py
index 6466b2a4..c3e56390 100644
--- a/desktop/tests/test_gui_website.py
+++ b/desktop/tests/test_gui_website.py
@@ -4,7 +4,7 @@ import requests
 import shutil
 from datetime import datetime, timedelta
 
-from PyQt5 import QtCore, QtTest
+from PySide2 import QtCore, QtTest
 
 from .gui_base_test import GuiBaseTest