qt4-mac @4.8.5_0 missing dependency: qt4-mac-sqlite3-plugin

[oliver.bock@…]

Qt Assistent fails to run due to a missing dependency:

QSqlDatabase: QSQLITE driver not loaded
QSqlDatabase: available drivers:
Error reading collection file '/Users/<user>/Library/Application Support/Trolltech/Assistant/qthelpcollection_4.8.5.qhc': Cannot load sqlite database driver!.

Installing qt4-mac-sqlite3-plugin solves the issue for me.

[cooljeanius (Eric Gallager)]

Unfortunately that can't be added as a dependency, because that would create a circular dependency loop. Perhaps a note telling users to install it could be added to port notes qt4-mac though...

[michaelld (Michael Dickens)]

I'll echo what egall@ said: qt4-mac-sqlite3-plugin has qt4-mac as a dependency, and thus qt4-mac-sqlite3-plugin cannot be a dependency of qt4-mac. I'll add a note to qt4-mac about plugins, as well as update the plugins to 4.8.5.

[oliver.bock@…]

While I do understand the reasoning, I can't consider this as a proper solution to the problem. This effectively means a primary component of the qt4-mac port, Qt Assistant, will be broken by default. Of all average/casual MacPorts users, who is going to look into those notes?

I honestly think you should reconsider the package/port structure and probably integrate the SQLite plugin since it's required mandatorily.

JM2C

[michaelld (Michael Dickens)]

I don't use QtAssistant. I just tested it both with and without qt4-mac-sqlite3-plugin (and, the other qt4-mac-*-plugin ports), and I see your point. Since Assistant is installed with qt4-mac, this plugin needs to be installed with qt4-mac as well. Or, I need to find a way to make Assistant its own port, with its own dependencies. I'm glad you found a way to make Assistant work, and pointed this issue out in more detail; it might take me some time to fix it.

[oliver.bock@…]

Sounds good, thank you!

IMHO you should strive to get qt4-mac-sqlite3-plugin (re)integrated into qt4-mac. Factoring out Qt Assistant doesn't feel right as it's a core component like Designer or Linguist (only Qt Creator has always been a separate product). You could of course make Assistant its own port if all other attempts fail, but only as a measure of last resort.

[cooljeanius (Eric Gallager)]

Replying to oliver.bock@…:

Why did qt4-mac-sqlite3-plugin have to be separated out anyway?

Because the qt4-mac port is really big and it takes forever to build it, so it doesn't make sense to force everyone to rebuild the entire thing if there's just been a small tweak to one of the sql plugins.

[larryv (Lawrence Velázquez)]

Has duplicate #39933 for qt4-creator-mac. Similar issue.

[cooljeanius (Eric Gallager)]

Cc Me!

[macports@…]

Cc Me!

[cooljeanius (Eric Gallager)]

Replying to larryv@…:

Has duplicate #39933 for qt4-creator-mac. Similar issue.

Except adding a dependency for qt4-mac-sqlite3-plugin to qt4-creator-mac wouldn't create a circular dependency like it would for just-plain qt4-mac.

[larryv (Lawrence Velázquez)]

Replying to egall@…:

Replying to larryv@…: Except adding a dependency for qt4-mac-sqlite3-plugin to qt4-creator-mac wouldn't create a circular dependency like it would for just-plain qt4-mac.

I had wanted sicherha to discuss a solution with michaelld before qt4-creator-mac was fixed, but I do suppose the added dependency could always be removed later if it were folded into qt4-mac.

[larryv (Lawrence Velázquez)]

Reopened #39933 and #39935.