Incubator-superset: TIME_GRAIN_ADDON_FUNCTIONS not working in superset 0.34

[lilila]

I changed from superset 0.32.0rc2 to 0.34 and the time grains added in the config file are not working anymore.

I have set up :

TIME_GRAIN_ADDONS = {"1969-12-31T00:00:00Z/P1W": 'week_start_wednesday'}
TIME_GRAIN_ADDON_FUNCTIONS = {
        'mysql':
        {"1969-12-31T00:00:00Z/P1W": 
                'DATE(DATE_SUB({col}, ''INTERVAL DAYOFWEEK(DATE_SUB({col}, INTERVAL 3 DAY)) - 1 DAY))'}
            }

And when I select week_start_wednesday as time grain I get the following error :

No grain spec for 1969-12-31T00:00:00Z/P1W for database mysql

Note : the same config was working well in superset 0.32.0rc2

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[villebro]

Will look into this