SQLite: Both PDO and vendor specific driver needed according to installation wizard and running instance

[pmattern]

Both the installation wizard and running Nextcloud instances are claiming that both the PDO ("pdo_sqlite") and vendor specific ("sqlite3") driver are needed.

If the vendor specific driver ("sqlite3") is missing there's a warning

right when the wizard should come up or the URL of a running instance (which had been setup with both drivers available before) is opened.

If the PDO driver is missing there's a warning

upon completing the wizard while a running instance (set up as depicted in previous paragraph) simply turns into a blank page.

To my knowledge it isn't common practice to use the two drivers in parallel suggesting this is a bug.
It looks somewhat similar to the problem of PostgreSQL addressed in #367.

Seen running 09e1218 or release 10.0.0 on Arch Linux x86_64, SQLite 3.14.2, Apache 2.4.23, PHP 7.0.11 via mod_php.

[MorrisJobke]

cc @icewind1991

[icewind1991]

I can't find any part in the setup code that uses the sqlite extension

[nickvergessen]

still an issue with nextcloud 10 @pmattern ?

[pmattern]

@icewind1991, @nickvergessen
The problem persists but having another look made me realize it's even worse. I took the liberty to edit both title and first comment accordingly. You may want to have a look.

[MorrisJobke]

@LukasReschke maybe we should adjust the tests?