From 862fca1602bfbb3d0eaf1fb0fd133dd0a7eb0002 Mon Sep 17 00:00:00 2001
From: Valentin Lorentz <progval+git@progval.net>
Date: Sun, 6 Mar 2022 13:38:10 +0100
Subject: [PATCH] conf: Use imports instead of sys.modules to detect module
 availability

`conf.supybot.databases()` may be called without any plugin supporting
sqlite3 being loaded yet, which causes `sqlite3` to be missing from
`sys.modules`; so it wouldn't be used by plugins loaded afterward.
---
 src/conf.py | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/src/conf.py b/src/conf.py
index fdd9800a3..b9314c2ff 100644
--- a/src/conf.py
+++ b/src/conf.py
@@ -1021,9 +1021,17 @@ class Databases(registry.SpaceSeparatedListOfStrings):
         v = super(Databases, self).__call__()
         if not v:
             v = ['anydbm', 'dbm', 'cdb', 'flat', 'pickle']
-            if 'sqlalchemy' in sys.modules:
+            try:
+                import sqlalchemy
+            except ImportError:
+                pass
+            else:
                 v.insert(0, 'sqlalchemy')
-            if 'sqlite3' in sys.modules:
+            try:
+                import sqlite3
+            except ImportError:
+                pass
+            else:
                 v.insert(0, 'sqlite3')
         return v