check a profile exists every time

if something went wrong between pm.meta() and .ensureProfile() in the
past, it would lead to an inability to start Anki due to the a lack of
any profiles

https://anki.tenderapp.com/discussions/ankidesktop/32972-linux-upgrade-problems-20-219

aqt/__init__.py

@@ -349,9 +349,6 @@ environment points to a valid, writable folder.""")
             QMessageBox.critical(None, "Error", "Your video driver is incompatible. Please start Anki again, and Anki will switch to a slower, more compatible mode.")
             sys.exit(1)
 
-    # remaining pm init
-    pm.ensureProfile()
-
     # load the main window
     import aqt.main
     mw = aqt.main.AnkiQt(app, pm, opts, args)

aqt/profiles.py

@@ -126,9 +126,15 @@ a flash drive.""" % self.base)
     ######################################################################
 
     def profiles(self):
-        return sorted(x for x in
-            self.db.list("select name from profiles")
-            if x != "_global")
+        def names():
+            return self.db.list("select name from profiles where name != '_global'")
+
+        n = names()
+        if not n:
+            self._ensureProfile()
+            n = names()
+
+        return n
 
     def _unpickle(self, data):
         class Unpickler(pickle.Unpickler):
@@ -338,12 +344,11 @@ create table if not exists profiles
         self._setDefaultLang()
         return True
 
-    def ensureProfile(self):
+    def _ensureProfile(self):
         "Create a new profile if none exists."
-        if self.firstRun:
-            self.create(_("User 1"))
-            p = os.path.join(self.base, "README.txt")
-            open(p, "w", encoding="utf8").write(_("""\
+        self.create(_("User 1"))
+        p = os.path.join(self.base, "README.txt")
+        open(p, "w", encoding="utf8").write(_("""\
 This folder stores all of your Anki data in a single location,
 to make backups easy. To tell Anki to use a different location,
 please see: