You have been subscribed to a public bug by Harald Sitter (apachelogger):
qtchooser reads the path to resolve a binary from default.conf which
always points to the architecture qtchooser was built for. e.g.
/x86_64-linuxwhateverblahblah/ on amd64
this in particular means that if one is on amd64 and installs qdbus:i386
it will replace (i.e. remove) qdbus:amd64 and from that point on
/usr/bin/qdbus (which is backed by qtchooser) will no longer work
because it will look in the x86_64 path but not the x86_32 one.
> qdbus: could not exec '/usr/lib/x86_64-linux-gnu/qt4/bin/qdbus': No
such file or directory
this has a rather grave impact on users that get their qdbus replaced
with qdbus:i386 as large parts of kde software expect qdbus to simply
work (such as startkde - bug 827815) and even platform stuff does (such
as the power button handler - bug 1124149).
and judging from those bugs this can happen rather easily, and has
already happened to a lot of users.
to resolve this qtchooser either needs to also look in the 32bit path OR
the package deps need to be adjusted such that one cannot have a mixture
of arch packages (which I doubt will be feasible because switching the
tooling to i386 will likely cause all of kde/qt to be switched to i386
too...).
** Affects: qtchooser (Ubuntu)
Importance: Critical
Status: Triaged
** Affects: qtchooser (Ubuntu Raring)
Importance: Critical
Status: Triaged
** Affects: qtchooser (Ubuntu Saucy)
Importance: Critical
Status: Triaged
** Tags: kubuntu
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qtchooser does not properly work with multiarch
https://bugs.launchpad.net/bugs/1176686
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