bsd_support.patch

 plover/dist_main.py               |  5 ++---
 plover/gui_qt/engine.py           |  6 ++----
 plover/gui_qt/main_window.py      |  8 ++++----
 plover/gui_qt/trayicon.py         |  5 ++---
 plover/i18n.py                    | 11 +++++------
 plover/log.py                     |  8 ++++----
 plover/macro/undo.py              |  6 ++----
 plover/main.py                    | 12 +++++-------
 plover/oslayer/config.py          | 22 +++++++++++++---------
 plover/oslayer/keyboardcontrol.py | 10 +++++-----
 plover/oslayer/log_plyer.py       |  5 ++---
 plover/oslayer/processlock.py     |  4 +++-
 plover/oslayer/wmctrl.py          |  9 ++++-----
 reqs/dist.txt                     |  4 ++--
 test/test_config.py               |  5 +++--
 test/test_misc.py                 |  3 +--
 test/test_translation.py          |  6 +++---
 17 files changed, 62 insertions(+), 67 deletions(-)

diff --git i/plover/dist_main.py w/plover/dist_main.py
index 92ebb140..29db404d 100644
--- i/plover/dist_main.py
+++ w/plover/dist_main.py
@@ -1,9 +1,8 @@
-
 import os
 import sys
 import subprocess
 
-from plover.oslayer.config import CONFIG_DIR, PLUGINS_PLATFORM
+from plover.oslayer.config import CONFIG_DIR, PLATFORM, PLUGINS_PLATFORM
 
 
 def main():
@@ -13,7 +12,7 @@ def main():
         args.remove('--no-user-plugins')
         args.insert(1, '-s')
     os.environ['PYTHONUSERBASE'] = os.path.join(CONFIG_DIR, 'plugins', PLUGINS_PLATFORM)
-    if sys.platform.startswith('win32'):
+    if PLATFORM == 'win':
         # Workaround https://bugs.python.org/issue19066
         subprocess.Popen(args, cwd=os.getcwd())
         sys.exit(0)
diff --git i/plover/gui_qt/engine.py w/plover/gui_qt/engine.py
index be29b119..490e9bae 100644
--- i/plover/gui_qt/engine.py
+++ w/plover/gui_qt/engine.py
@@ -1,6 +1,3 @@
-
-import sys
-
 from PyQt5.QtCore import (
     QThread,
     QVariant,
@@ -8,6 +5,7 @@
 )
 
 from plover.engine import StenoEngine
+from plover.oslayer.config import PLATFORM
 
 
 class Engine(StenoEngine, QThread):
@@ -50,7 +48,7 @@ def join(self):
         return self.code
 
     def run(self):
-        if sys.platform.startswith('darwin'):
+        if PLATFORM == 'mac':
             import appnope
             appnope.nope()
         super().run()
diff --git i/plover/gui_qt/main_window.py w/plover/gui_qt/main_window.py
index 423ad00d..110f3085 100644
--- i/plover/gui_qt/main_window.py
+++ w/plover/gui_qt/main_window.py
@@ -14,7 +14,7 @@
 
 from plover import _, log
 from plover.oslayer import wmctrl
-from plover.oslayer.config import CONFIG_DIR
+from plover.oslayer.config import CONFIG_DIR, PLATFORM
 from plover.registry import registry
 from plover.resource import resource_filename
 
@@ -243,11 +243,11 @@ def on_configure(self):
         self._configure()
 
     def on_open_config_folder(self):
-        if sys.platform.startswith('win'):
+        if PLATFORM == 'win':
             os.startfile(CONFIG_DIR)
-        elif sys.platform.startswith('linux'):
+        elif PLATFORM == 'linux':
             subprocess.call(['xdg-open', CONFIG_DIR])
-        elif sys.platform.startswith('darwin'):
+        elif PLATFORM == 'mac':
             subprocess.call(['open', CONFIG_DIR])
 
     def on_reconnect(self):
diff --git i/plover/gui_qt/trayicon.py w/plover/gui_qt/trayicon.py
index 41cc54cc..d00e9a59 100644
--- i/plover/gui_qt/trayicon.py
+++ w/plover/gui_qt/trayicon.py
@@ -1,11 +1,10 @@
-import sys
-
 from PyQt5.QtCore import QObject, pyqtSignal
 from PyQt5.QtGui import QIcon
 from PyQt5.QtWidgets import QMessageBox, QSystemTrayIcon
 
 from plover import _, __name__ as __software_name__
 from plover import log
+from plover.oslayer.config import PLATFORM
 from plover.machine.base import (
     STATE_STOPPED,
     STATE_INITIALIZING,
@@ -76,7 +75,7 @@ def enable(self):
         self._trayicon = QSystemTrayIcon()
         # On OS X, the context menu is activated with either mouse buttons,
         # and activation messages are still sent, so ignore those...
-        if not sys.platform.startswith('darwin'):
+        if PLATFORM != 'mac':
             self._trayicon.activated.connect(self._on_activated)
         if self._context_menu is not None:
             self._trayicon.setContextMenu(self._context_menu)
diff --git i/plover/i18n.py w/plover/i18n.py
index 4f6330d7..602f88c9 100644
--- i/plover/i18n.py
+++ w/plover/i18n.py
@@ -1,28 +1,27 @@
 import os
-import sys
 import locale
 import gettext
 
 import pkg_resources
 
-from plover.oslayer.config import CONFIG_DIR
+from plover.oslayer.config import CONFIG_DIR, PLATFORM
 
 
 def get_language():
     env_vars = ['LANGUAGE']
-    if sys.platform.startswith('linux'):
+    if PLATFORM in {'linux', 'bsd'}:
         env_vars.extend(('LC_ALL', 'LC_MESSAGES', 'LANG'))
     for var in env_vars:
         lang = os.environ.get(var)
         if lang is not None:
             return lang
-    if sys.platform.startswith('linux'):
+    if PLATFORM in {'linux', 'bsd'}:
         lang, enc = locale.getdefaultlocale()
-    elif sys.platform.startswith('darwin'):
+    elif PLATFORM == 'mac':
         from AppKit import NSLocale
         lang_list = NSLocale.preferredLanguages()
         lang = lang_list[0] if lang_list else None
-    elif sys.platform.startswith('win'):
+    elif PLATFORM == 'win':
         from ctypes import windll
         lang = locale.windows_locale[windll.kernel32.GetUserDefaultUILanguage()]
     if lang is None:
diff --git i/plover/log.py w/plover/log.py
index 1aecf6cf..6d32555e 100644
--- i/plover/log.py
+++ w/plover/log.py
@@ -11,7 +11,7 @@
 from logging.handlers import RotatingFileHandler
 from logging import DEBUG, INFO, WARNING, ERROR
 
-from plover.oslayer.config import CONFIG_DIR
+from plover.oslayer.config import CONFIG_DIR, PLATFORM
 
 
 LOG_FORMAT = '%(asctime)s [%(threadName)s] %(levelname)s: %(message)s'
@@ -84,13 +84,13 @@ def setup_platform_handler(self):
             return
         handler_class = None
         try:
-            if sys.platform.startswith('linux'):
+            if PLATFORM == 'linux':
                 from plover.oslayer.log_dbus import DbusNotificationHandler
                 handler_class = DbusNotificationHandler
-            elif sys.platform.startswith('darwin'):
+            elif PLATFORM == 'mac':
                 from plover.oslayer.log_osx import OSXNotificationHandler
                 handler_class = OSXNotificationHandler
-            elif sys.platform.startswith('win32'):
+            elif PLATFORM == 'win':
                 from plover.oslayer.log_plyer import PlyerNotificationHandler
                 handler_class = PlyerNotificationHandler
         except Exception:
diff --git i/plover/macro/undo.py w/plover/macro/undo.py
index 15585050..15a53502 100644
--- i/plover/macro/undo.py
+++ w/plover/macro/undo.py
@@ -1,10 +1,8 @@
-
-import sys
-
 from plover.translation import Translation
+from plover.oslayer.config import PLATFORM
 
 
-if sys.platform.startswith('darwin'):
+if PLATFORM == 'mac':
     BACK_STRING = '{#Alt_L(BackSpace)}{^}'
 else:
     BACK_STRING = '{#Control_L(BackSpace)}{^}'
diff --git i/plover/main.py w/plover/main.py
index 4a05878e..6010174c 100644
--- i/plover/main.py
+++ w/plover/main.py
@@ -14,12 +14,9 @@
 
 import pkg_resources
 
-if sys.platform.startswith('darwin'):
-    import appnope
-
 from plover.config import Config
 from plover.oslayer import processlock
-from plover.oslayer.config import CONFIG_DIR, CONFIG_FILE
+from plover.oslayer.config import CONFIG_DIR, CONFIG_FILE, PLATFORM
 from plover.registry import registry
 from plover import log
 from plover import __name__ as __software_name__
@@ -61,7 +58,7 @@ def main():
     log.info('Plover %s', __version__)
     log.info('configuration directory: %s', CONFIG_DIR)
 
-    if sys.platform == 'darwin':
+    if PLATFORM == 'mac':
         # Fixes PyQt issue on macOS Big Sur.
         os.environ['QT_MAC_WANTS_LAYER'] = '1'
 
@@ -121,7 +118,8 @@ def main():
 
         # Ensure only one instance of Plover is running at a time.
         with processlock.PloverLock():
-            if sys.platform.startswith('darwin'):
+            if PLATFORM == 'mac':
+                import appnope
                 appnope.nope()
             init_config_dir()
             # This must be done after calling init_config_dir, so
@@ -144,7 +142,7 @@ def main():
             args[0:1] = [sys.executable, '-m', __spec__.name]
         # Execute atexit handlers.
         atexit._run_exitfuncs()
-        if sys.platform.startswith('win32'):
+        if PLATFORM == 'win':
             # Workaround https://bugs.python.org/issue19066
             subprocess.Popen(args, cwd=os.getcwd())
             code = 0
diff --git i/plover/oslayer/config.py w/plover/oslayer/config.py
index e2594506..f4b9dee7 100644
--- i/plover/oslayer/config.py
+++ w/plover/oslayer/config.py
@@ -10,12 +10,23 @@
 import pkg_resources
 
 
+if sys.platform.startswith('darwin'):
+    PLATFORM = 'mac'
+elif sys.platform.startswith('linux'):
+    PLATFORM = 'linux'
+elif sys.platform.startswith('win'):
+    PLATFORM = 'win'
+elif sys.platform.startswith(('freebsd', 'openbsd')):
+    PLATFORM = 'bsd'
+else:
+    PLATFORM = None
+
 # If the program's working directory has a plover.cfg file then run in
 # "portable mode", i.e. store all data in the same directory. This allows
 # keeping all Plover files in a portable drive.
 #
 # Note: the special case when run from an app bundle on macOS.
-if sys.platform.startswith('darwin') and '.app/' in os.path.realpath(__file__):
+if PLATFORM == 'mac' and '.app/' in os.path.realpath(__file__):
     PROGRAM_DIR = os.path.abspath(os.path.join(os.path.dirname(sys.executable),
                                                *[os.path.pardir] * 3))
 else:
@@ -38,14 +49,7 @@
 CONFIG_FILE = os.path.join(CONFIG_DIR, CONFIG_BASENAME)
 
 # Setup plugins directory.
-if sys.platform.startswith('darwin'):
-    PLUGINS_PLATFORM = 'mac'
-elif sys.platform.startswith('linux'):
-    PLUGINS_PLATFORM = 'linux'
-elif sys.platform.startswith('win'):
-    PLUGINS_PLATFORM = 'win'
-else:
-    PLUGINS_PLATFORM = None
+PLUGINS_PLATFORM = PLATFORM
 
 plover_dist = pkg_resources.working_set.by_key['plover']
 
diff --git i/plover/oslayer/keyboardcontrol.py w/plover/oslayer/keyboardcontrol.py
index 7e8f8aff..1b892c4e 100644
--- i/plover/oslayer/keyboardcontrol.py
+++ w/plover/oslayer/keyboardcontrol.py
@@ -16,16 +16,16 @@
 
 """
 
-import sys
+from plover.oslayer.config import PLATFORM
 
 KEYBOARDCONTROL_NOT_FOUND_FOR_OS = \
-        "No keyboard control module was found for os %s" % sys.platform
+        "No keyboard control module was found for platform: %s" % PLATFORM
 
-if sys.platform.startswith('linux'):
+if PLATFORM in {'linux', 'bsd'}:
     from plover.oslayer import xkeyboardcontrol as keyboardcontrol
-elif sys.platform.startswith('win32'):
+elif PLATFORM == 'win':
     from plover.oslayer import winkeyboardcontrol as keyboardcontrol
-elif sys.platform.startswith('darwin'):
+elif PLATFORM == 'mac':
     from plover.oslayer import osxkeyboardcontrol as keyboardcontrol
 else:
     raise Exception(KEYBOARDCONTROL_NOT_FOUND_FOR_OS)
diff --git i/plover/oslayer/log_plyer.py w/plover/oslayer/log_plyer.py
index 91979dac..c26aa874 100644
--- i/plover/oslayer/log_plyer.py
+++ w/plover/oslayer/log_plyer.py
@@ -1,16 +1,15 @@
 import os
-import sys
 import logging
 
 from plyer import notification
 
 from plover import log, __name__ as __software_name__
-from plover.oslayer.config import ASSETS_DIR
+from plover.oslayer.config import ASSETS_DIR, PLATFORM
 
 
 APPNAME = __software_name__.capitalize()
 
-if sys.platform.startswith('win32'):
+if PLATFORM == 'win':
     APPICON = os.path.join(ASSETS_DIR, 'plover.ico')
 else:
     APPICON = os.path.join(ASSETS_DIR, 'plover_32x32.png')
diff --git i/plover/oslayer/processlock.py w/plover/oslayer/processlock.py
index f5fa417c..5b983936 100644
--- i/plover/oslayer/processlock.py
+++ w/plover/oslayer/processlock.py
@@ -7,12 +7,14 @@
 
 import sys
 
+from plover.oslayer.config import PLATFORM
+
 
 class LockNotAcquiredException(Exception):
     pass
 
 
-if sys.platform.startswith('win32'):
+if PLATFORM == 'win':
 
     from ctypes import windll
 
diff --git i/plover/oslayer/wmctrl.py w/plover/oslayer/wmctrl.py
index c954f628..0aeb4304 100644
--- i/plover/oslayer/wmctrl.py
+++ w/plover/oslayer/wmctrl.py
@@ -1,8 +1,7 @@
+from plover.oslayer.config import PLATFORM
 
-import sys
 
-
-if sys.platform.startswith('win32'):
+if PLATFORM == 'win':
 
     from ctypes import windll, wintypes
 
@@ -17,7 +16,7 @@
     SetForegroundWindow.restype = wintypes.BOOL
 
 
-elif sys.platform.startswith('darwin'):
+elif PLATFORM == 'mac':
 
     from Cocoa import NSWorkspace, NSRunningApplication, NSApplicationActivateIgnoringOtherApps
 
@@ -28,7 +27,7 @@ def SetForegroundWindow(pid):
         target_window = NSRunningApplication.runningApplicationWithProcessIdentifier_(pid)
         target_window.activateWithOptions_(NSApplicationActivateIgnoringOtherApps)
 
-elif sys.platform.startswith('linux'):
+elif PLATFORM in {'linux', 'bsd'}:
 
     from plover.oslayer.xwmctrl import WmCtrl
 
diff --git i/reqs/dist.txt w/reqs/dist.txt
index 98864c8d..b45b9e33 100644
--- i/reqs/dist.txt
+++ w/reqs/dist.txt
@@ -4,8 +4,8 @@ pyobjc-core>=4.0; "darwin" in sys_platform
 pyobjc-framework-Cocoa>=4.0; "darwin" in sys_platform
 pyobjc-framework-Quartz>=4.0; "darwin" in sys_platform
 pyserial>=2.7
-python-xlib>=0.16; "linux" in sys_platform and python_version < "3.9"
-python-xlib>=0.29; "linux" in sys_platform and python_version >= "3.9"
+python-xlib>=0.16; ("linux" in sys_platform or "bsd" in sys_platform) and python_version < "3.9"
+python-xlib>=0.29; ("linux" in sys_platform or "bsd" in sys_platform) and python_version >= "3.9"
 setuptools
 wcwidth
 
diff --git i/test/test_config.py w/test/test_config.py
index 387945bc..8a06c4bb 100644
--- i/test/test_config.py
+++ w/test/test_config.py
@@ -20,6 +20,7 @@
 
 from plover import config
 from plover.config import DictionaryConfig
+from plover.oslayer.config import PLATFORM
 from plover.machine.keyboard import Keyboard
 from plover.machine.keymap import Keymap
 from plover.misc import expand_path
@@ -102,7 +103,7 @@ def test_config_dict():
             DictionaryConfig(short_path, False)
 
 
-if sys.platform.startswith('win32'):
+if PLATFORM == 'win':
     ABS_PATH = os.path.normcase(r'c:/foo/bar')
 else:
     ABS_PATH = '/foo/bar'
@@ -554,7 +555,7 @@ def test_config_dir(tree, expected_config_dir, tmpdir):
     }
     # Setup environment.
     env = dict(os.environ)
-    if sys.platform.startswith('win32'):
+    if PLATFORM == 'win':
         env['USERPROFILE'] = str(home)
     else:
         env['HOME'] = str(home)
diff --git i/test/test_misc.py w/test/test_misc.py
index da518896..83b84cad 100644
--- i/test/test_misc.py
+++ w/test/test_misc.py
@@ -6,7 +6,6 @@
 
 import inspect
 import os
-import sys
 
 import pytest
 
@@ -26,7 +25,7 @@ def test_popcount_8():
         misc.popcount_8(-1)
 
 
-if sys.platform.startswith('win32'):
+if conf.PLATFORM == 'win':
     ABS_PATH = os.path.normcase(r'c:\foo\bar')
 else:
     ABS_PATH = '/foo/bar'
diff --git i/test/test_translation.py w/test/test_translation.py
index 98c46226..9f0a2fb7 100644
--- i/test/test_translation.py
+++ w/test/test_translation.py
@@ -6,19 +6,19 @@
 from collections import namedtuple
 import copy
 import operator
-import sys
 
+from plover.oslayer.config import PLATFORM
+from plover.steno import Stroke, normalize_steno
 from plover.steno_dictionary import StenoDictionary, StenoDictionaryCollection
 from plover.translation import Translation, Translator, _State
 from plover.translation import escape_translation, unescape_translation
-from plover.steno import Stroke, normalize_steno
 
 from plover_build_utils.testing import steno_to_stroke as stroke
 
 from . import parametrize
 
 
-if sys.platform.startswith('darwin'):
+if PLATFORM == 'mac':
     BACK_STRING = '{#Alt_L(BackSpace)}{^}'
 else:
     BACK_STRING = '{#Control_L(BackSpace)}{^}'