[Eric] Unable to activate eric4 assistant plugin: The SQLite database driver is not available.

[Matthew Sorenson]

I am having trouble activating the eric4 assistant plugin. The error is: 
"The SQLite database driver is not available." I am using PyQt 4.7 on 
Python 2.6.4 and eric 4.4.1. The database drivers are all plugins.

I believe I have narrowed the problem down to the differences between 
the examples at the end. Checking into the databases before 
instantiating a QApplication seems to change the library paths.

The PluginAssistantEric.py script has the following check:
         drivers = QSqlDatabase.drivers()
         if drivers.contains("QSQLITE"):
             return True
         else:
             error = self.trUtf8("The SQLite database driver is not 
available.")
             return False

At this point, there are no drivers loaded. I recreated the situation in 
the shell and 
"QtGui.QApplication.addLibraryPath("C:\Python26\Lib\site-packages\PyQt4\plugins")" 
will load the drivers. So while I have a temporary fix by adding this 
line into the script, I would like to know how I could solve this in a 
more permanent fashion. My apologies if this is a problem with PyQt 
instead of eric, but I do not know what the correct behavior should be.

Thanks,
Matthew Sorenson

Examples:
------------------------------------------------------------------------------------------------------------
Python 2.6.4 (r264:75708, Oct 26 2009, 08:23:19) [MSC v.1500 32 bit 
(Intel)] on hermes, Standard
 >>> import sys
 >>> from PyQt4 import QtGui, QtSql
 >>> app = QtGui.QApplication(sys.argv)
 >>> QtSql.QSqlDatabase.drivers().count()
7
 >>> db = QtSql.QSqlDatabase.addDatabase("QSQLITE")
 >>> QtGui.QApplication.libraryPaths().count()
2
 >>> print QtGui.QApplication.libraryPaths()[0]
C:/Python26/Lib/site-packages/PyQt4/plugins
 >>> print QtGui.QApplication.libraryPaths()[1]
C:/python26
 >>>
-------------------------------------------------------------------------------------------------------------
Python 2.6.4 (r264:75708, Oct 26 2009, 08:23:19) [MSC v.1500 32 bit 
(Intel)] on hermes, Standard
 >>> import sys
 >>> from PyQt4 import QtGui, QtSql
 >>> QtSql.QSqlDatabase.drivers().count()
0
 >>> app = QtGui.QApplication(sys.argv)
 >>> QtSql.QSqlDatabase.drivers().count()
0
 >>> db = QtSql.QSqlDatabase.addDatabase("QSQLITE")
 >>> StdErr: QSqlDatabase: QSQLITE driver not loaded
QSqlDatabase: available drivers:

 >>> QtGui.QApplication.libraryPaths().count()
1
 >>> print QtGui.QApplication.libraryPaths()[0]
C:/python26
 >>> 
QtGui.QApplication.addLibraryPath("C:\Python26\Lib\site-packages\PyQt4\plugins")
 >>> QtGui.QApplication.libraryPaths().count()
2
 >>> QtSql.QSqlDatabase.drivers().count()
7
 >>> db = QtSql.QSqlDatabase.addDatabase("QSQLITE")
 >>> StdErr: QSqlDatabasePrivate::removeDatabase: connection 
'qt_sql_default_connection' is still in use, all queries will cease to work.
QSqlDatabasePrivate::addDatabase: duplicate connection name 
'qt_sql_default_connection', old connection removed.