try wxPython before tkinter, recent macOS otherwise fails

python/damask/_environment.py

@@ -1,19 +1,25 @@
 import os
 from pathlib import Path
-import tkinter
 
 class Environment:
 
     def __init__(self):
         """Read and provide values of DAMASK configuration."""
+        self.screen_width  = 1024
+        self.screen_height =  768
         try:
+            import wx
+            app = wx.App(False)
+            self.screenwidth, self.screenheight = wx.GetDisplaySize()
+        except ImportError:
+            try:
+                import tkinter
                 tk = tkinter.Tk()
                 self.screen_width  = tk.winfo_screenwidth()
                 self.screen_height = tk.winfo_screenheight()
                 tk.destroy()
-        except tkinter.TclError:
-            self.screen_width  = 1024
-            self.screen_height =  768
+            except:
+                pass
 
     @property
     def options(self):