Description of problem:
When updating to PackageKit-1.0.4-1.fc21 on Fedora 21 Server, many extra dependencies are pulled in due to libappstream-glib:
$ sudo dnf update libhif PackageKit -v
DNF version: 0.6.3
repo: using cache for: fedora
not found deltainfo for: Fedora 21 - x86_64
not found updateinfo for: Fedora 21 - x86_64
repo: using cache for: updates
--> Starting dependency resolution
---> Package libappstream-glib.x86_64 0.2.8-1.fc21 will be installed
---> Package atk.x86_64 2.14.0-1.fc21 will be installed
---> Package pango.x86_64 1.36.8-1.fc21 will be installed
---> Package libXft.x86_64 2.3.2-2.fc21 will be installed
---> Package libthai.x86_64 0.1.20-4.fc21 will be installed
---> Package libdatrie.x86_64 0.2.8-5.fc21 will be installed
---> Package gtk3.x86_64 3.14.6-1.fc21 will be installed
---> Package adwaita-icon-theme.noarch 3.14.1-1.fc21 will be installed
---> Package at-spi2-atk.x86_64 2.14.1-1.fc21 will be installed
---> Package libXcomposite.x86_64 0.4.4-6.fc21 will be installed
---> Package libXcursor.x86_64 1.1.14-4.fc21 will be installed
---> Package libXi.x86_64 1.7.4-2.fc21 will be installed
---> Package libXinerama.x86_64 1.1.3-4.fc21 will be installed
---> Package libXrandr.x86_64 1.4.2-2.fc21 will be installed
---> Package libwayland-cursor.x86_64 1.6.0-1.fc21 will be installed
---> Package libxkbcommon.x86_64 0.5.0-1.fc21 will be installed
---> Package rest.x86_64 0.7.92-5.fc21 will be installed
---> Package adwaita-cursor-theme.noarch 3.14.1-1.fc21 will be installed
---> Package at-spi2-core.x86_64 2.14.1-1.fc21 will be installed
---> Package xkeyboard-config.noarch 2.13-3.fc21 will be installed
---> Package libXevie.x86_64 1.0.3-9.fc21 will be installed
---> Package libXtst.x86_64 1.2.2-4.fc21 will be installed
---> Package harfbuzz.x86_64 0.9.36-1.fc21 will be installed
---> Package graphite2.x86_64 1.2.4-3.fc21 will be installed
---> Package colord-libs.x86_64 1.2.8-1.fc21 will be installed
---> Package lcms2.x86_64 2.6-4.fc21 will be installed
---> Package hicolor-icon-theme.noarch 0.14-1.fc21 will be installed
---> Package libgusb.x86_64 0.2.4-1.fc21 will be installed
---> Package PackageKit.x86_64 1.0.3-4.fc21 will be upgraded
---> Package PackageKit.x86_64 1.0.4-1.fc21 will be an upgrade
---> Package PackageKit-glib.x86_64 1.0.3-4.fc21 will be upgraded
---> Package PackageKit-glib.x86_64 1.0.4-1.fc21 will be an upgrade
---> Package libhif.x86_64 0.1.7-2.fc21 will be upgraded
---> Package libhif.x86_64 0.1.8-1.fc21 will be an upgrade
--> Finished dependency resolution
Package Arch Version Repository Size
adwaita-cursor-theme noarch 3.14.1-1.fc21 fedora 131 k
adwaita-icon-theme noarch 3.14.1-1.fc21 fedora 11 M
at-spi2-atk x86_64 2.14.1-1.fc21 fedora 84 k
at-spi2-core x86_64 2.14.1-1.fc21 fedora 160 k
atk x86_64 2.14.0-1.fc21 fedora 256 k
colord-libs x86_64 1.2.8-1.fc21 updates 184 k
graphite2 x86_64 1.2.4-3.fc21 fedora 90 k
gtk3 x86_64 3.14.6-1.fc21 updates 3.8 M
harfbuzz x86_64 0.9.36-1.fc21 updates 160 k
hicolor-icon-theme noarch 0.14-1.fc21 updates 49 k
lcms2 x86_64 2.6-4.fc21 fedora 154 k
libXcomposite x86_64 0.4.4-6.fc21 fedora 27 k
libXcursor x86_64 1.1.14-4.fc21 fedora 34 k
libXevie x86_64 1.0.3-9.fc21 fedora 22 k
libXft x86_64 2.3.2-2.fc21 fedora 62 k
libXi x86_64 1.7.4-2.fc21 fedora 44 k
libXinerama x86_64 1.1.3-4.fc21 fedora 18 k
libXrandr x86_64 1.4.2-2.fc21 fedora 29 k
libXtst x86_64 1.2.2-4.fc21 fedora 24 k
libappstream-glib x86_64 0.2.8-1.fc21 updates 125 k
libdatrie x86_64 0.2.8-5.fc21 fedora 31 k
libgusb x86_64 0.2.4-1.fc21 updates 41 k
libthai x86_64 0.1.20-4.fc21 fedora 190 k
libwayland-cursor x86_64 1.6.0-1.fc21 fedora 21 k
libxkbcommon x86_64 0.5.0-1.fc21 fedora 112 k
pango x86_64 1.36.8-1.fc21 fedora 292 k
rest x86_64 0.7.92-5.fc21 fedora 66 k
xkeyboard-config noarch 2.13-3.fc21 fedora 748 k
PackageKit x86_64 1.0.4-1.fc21 updates 574 k
PackageKit-glib x86_64 1.0.4-1.fc21 updates 135 k
libhif x86_64 0.1.8-1.fc21 updates 71 k
Install 28 Packages
Upgrade 3 Packages
This is because of the new PackageKit → libappstream-glib dependency in 1.0.4 (introduced by this upstream commit: https://github.com/hughsie/PackageKit/commit/62bc031cab55e1830a99f79ea12b7e59a9f54c3a ) and the resulting PackageKit → libappstream-glib → gtk3 dependency chain.
This also affects my pure-KDE Fedora Remix Kannolo.
Adding the Regression keyword because this dependency bloat was introduced to Fedora 21 in an update.
Here's a build without AppStream support as a quick fix:
Corresponding sources, if you don't want to look into the SRPM:
We've fixed this by unbundling the gtk-pixbuf image loaders in F23.
Meh… To me, this is still a completely unnecessary GTK+ dependency, and I will continue to build PackageKit without this "automatic AppStream installation" support for Kannolo.
I really don't see why we need image loaders at all just to copy a file.
How does this work in all the other PackageKit backends?
You also did nothing to address this dependency chain issue (not even in your suboptimal way) in the existing releases Fedora 21 (which you broke in an update!) and 22.
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