Source: apertium-dbus
Version: 0.1-1.1
Severity: wishlist
dbus-python ships a header file and a pkg-config metadata file for use by
out-of-tree main loop implementations, such as python-qt4 and python-edbus.
These are intended to be pretty rarely used, a lot like python-gtk2-dev -
the only packages which are intended to use them are Python bindings for
main loop implementations (again, like python-qt4 and python-edbus).
Unfortunately, several packages use pkg-config as a more general check for
"is dbus-python installed?", and apertium-dbus is one of them.
This has become significant because the header file and pkg-config metadata
have moved to a new binary package, python-dbus-dev. At the moment,
python-dbus depends on python-dbus-dev for backwards compatibility (to avoid
breaking packages like yours), but I would like to remove that dependency
(Bug #673779).
Longer-term, work being done on pure-Python main loop support might mean
that the C header and pkg-config metadata will eventually go away entirely
in favour of pure-Python GLib, Qt and E main loop glue.
The correct, long-term solution for packages that don't implement a main loop
is to check for the dbus Python module (and, if required, the
dbus.mainloop.glib Python module) as you would for a pure-Python module:
run "python -c 'import dbus'", or use the AM_CHECK_PYMOD macro, or whatever.
If you need to check the version number, it's exported by the dbus module
as a string (dbus.__version__) and a tuple (dbus.version).
I've also noticed that apertium-dbus has a check for the dbus-1 pkg-config
module, which can't possibly be right, because it doesn't seem to contain
any C code at all... I think that can just be dropped, and then you wouldn't
need to build-depend on libdbus-1-dev either. The libapertium3-3.1-0-dev
dependency and apertium-3.1 pkg-config check also seem rather useless.
If that's not feasible, the next best thing is to set your package's
build-dependencies as if you were implementing a main loop:
* build-depend on python-dbus-dev
* if you support Python 2, also build-depend on python-dbus
* if you support Python 3, also build-depend on python3-dbus
Thanks,
Simon
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