Tomahawk crashes on startup.

[seanparsons]

Issue description

When I run the app it crashes, producing the following log:

Translation: Tomahawk: Using system locale: "en_GB" 
Translation: Qt: Using default locale, system locale one not found: "en_GB" 
TomahawkApp thread: QThread(0x2816950) 
18:10:00 [0]: Starting Tomahawk... 
18:10:00 [1]: Default font: -1 9 "Roboto" 10 
18:10:00 [0]: void TomahawkUtils::setHeadless(bool) headless is false 
18:10:00 [1]: Setting NAM: QNetworkAccessManager(0x2aca550) 
18:10:00 [1]: Init AudioEngine 
18:10:00 [1]: void AudioEngine::setVolume(int) 75 
18:10:00 [1]: Tomahawk::Pipeline::Pipeline(QObject*) Using 8 threads 
18:10:00 [1]: Init Database. 
18:10:00 [5]: Using database: "/home/sean/.local/share/Tomahawk/tomahawk.db" 
18:10:00 [0]: QSqlDatabase: QSQLITE driver not loaded
18:10:00 [0]: QSqlDatabase: available drivers: QSQLITE QMYSQL3 QMYSQL QPSQL7 QPSQL
18:10:00 [0]: Failed to open database "/home/sean/.local/share/Tomahawk/tomahawk.db" with driver "QSQLITE" 
18:10:00 [0]: Uncaught non std::exception 
terminate called after throwing an instance of 'char const*'
[1]    7200 abort      tomahawk

I have seen reference to this being a packaging issue in other distros. But it does seem a bit weird that it lists the driver as being available.

Steps to reproduce

Run tomahawk.

Technical details

• System: 16.03.1171.9cb194c (Emu)
• Nix version: nix-env (Nix) 1.11.2
• Nixpkgs version: 16.03.1171.9cb194c