KWin.app 
Motivation
KWin is the window manager used in KDE Plasma. It increasingly sees adoption on Qt-based desktop systems that are otherwise not using KDE Plasma, including CutefishOS, CyberOS, Deepin, Nitrux, and helloSystem beginning with 0.5.0. However, KWin and its packaging are currently not optimized for use outside of KDE Plasma yet, drawing in "half of KDE Plasma" as dependencies.
Installing the FreeBSD plasma5-kwin package on helloSystem draws in hundreds of megabytes.
FreeBSD% sudo pkg install plasma5-kwin
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The following 110 package(s) will be affected (of 0 checked):
New packages to be INSTALLED:
aspell: 0.60.8_1,1
boost-libs: 1.72.0_4
brotli: 1.0.9,1
docbook: 1.5
docbook-sgml: 4.5_1
docbook-xml: 5.0_3
docbook-xsl: 1.79.1_1,1
dotconf: 1.3_1
espeak: 1.48.04_7
fftw3: 3.3.9
flac: 1.3.3
gnupg: 2.2.27
gpgme: 1.15.1
gpgme-cpp: 1.15.1
gpgme-qt5: 1.15.1
gstreamer1-libav: 1.16.2
gstreamer1-plugins-a52dec: 1.16.2
gstreamer1-plugins-core: 1.16
gstreamer1-plugins-dts: 1.16.2
gstreamer1-plugins-dvdread: 1.16.2_1
gstreamer1-plugins-mpg123: 1.16.2
gstreamer1-plugins-pango: 1.16.2
gstreamer1-plugins-png: 1.16.2
gstreamer1-plugins-resindvd: 1.16.2_1
gstreamer1-plugins-theora: 1.16.2
gstreamer1-plugins-ugly: 1.16.2
hyphen: 2.8.8
iso8879: 1986_3
kf5-attica: 5.80.0
kf5-breeze-icons: 5.80.0
kf5-frameworkintegration: 5.80.0
kf5-kactivities: 5.80.0
kf5-karchive: 5.80.0
kf5-kauth: 5.80.0
kf5-kbookmarks: 5.80.0
kf5-kcmutils: 5.80.0
kf5-kcodecs: 5.80.0
kf5-kcompletion: 5.80.0
kf5-kconfigwidgets: 5.80.0
kf5-kcrash: 5.80.0
kf5-kdeclarative: 5.80.0
kf5-kded: 5.80.0
kf5-kdelibs4support: 5.80.0
kf5-kdesignerplugin: 5.80.0
kf5-kdewebkit: 5.80.0
kf5-kdoctools: 5.80.0
kf5-kemoticons: 5.80.0
kf5-kglobalaccel: 5.80.0
kf5-kguiaddons: 5.80.0
kf5-kiconthemes: 5.80.0
kf5-kidletime: 5.80.0
kf5-kinit: 5.80.0
kf5-kio: 5.80.1
kf5-kirigami2: 5.80.0
kf5-kitemmodels: 5.80.0
kf5-kitemviews: 5.80.0
kf5-kjobwidgets: 5.80.0
kf5-knewstuff: 5.80.0
kf5-knotifications: 5.80.0
kf5-kpackage: 5.80.0
kf5-kparts: 5.80.0
kf5-kplotting: 5.80.0
kf5-kservice: 5.80.0
kf5-ktextwidgets: 5.80.0
kf5-kunitconversion: 5.80.0
kf5-kwallet: 5.80.0
kf5-kwayland: 5.80.0
kf5-kwidgetsaddons: 5.80.0
kf5-kxmlgui: 5.80.0
kf5-plasma-framework: 5.80.0
kf5-solid: 5.80.0
kf5-sonnet: 5.80.0
liba52: 0.7.4_3
libassuan: 2.5.4
libcanberra: 0.30_5
libcanberra-gtk3: 0.30_5
libdca: 0.0.7
libksba: 1.5.0
libsndfile: 1.0.31
mpg123: 1.26.5
npth: 1.6
phonon-qt5: 4.11.1
pinentry: 1.1.1
pinentry-curses: 1.1.1
pinentry-qt5: 1.1.1
plasma-wayland-protocols: 1.2.1
plasma5-breeze: 5.20.5
plasma5-kdecoration: 5.20.5
plasma5-kscreenlocker: 5.20.5
plasma5-kwayland-server: 5.20.5
plasma5-kwin: 5.20.5_1
portaudio: 19.6.0_5,1
qt5-assistant: 5.15.2
qt5-designer: 5.15.2_1
qt5-help: 5.15.2_1
qt5-qdbus: 5.15.2
qt5-sensors: 5.15.2_1
qt5-speech: 5.15.2
qt5-uiplugin: 5.15.2
qt5-uitools: 5.15.2_1
qt5-virtualkeyboard: 5.15.2_1
qt5-wayland: 5.15.2_1
qt5-webkit: 5.212.0.a4_4
sdocbook-xml: 1.1_2,2
speech-dispatcher: 0.8.8_1
woff2: 1.0.2_4
xcb-util-cursor: 0.1.3
xmlcatmgr: 2.2_2
xmlcharent: 0.3_2
xwayland-devel: 1.20.0.907
Number of packages to be installed: 110
The process will require 552 MiB more space.
108 MiB to be downloaded.Hence this approach at packaging KWin and BreezeEnhanced in a way that minimizes its dependencies. The resulting KWin.app application bundle is smaller by roughly a factor of 20 compared to FreeBSD packaging.
This repository is intended as a starting point to work with upstream KWin developers on "KWinLite", a build configuration of KWin that draws in as few dependencies as possible while still maintaining the core functionality of a window manager to be used on Qt-based desktop systems other than KDE Plasma.
Running
- Run helloSystem 0.4.0 Live ISO (it does not contain the
plasma5-kwinandbreezeenhancedpackages nor many of their dependencies) sudo pkg install -y xcb-util-cursor qt5-sensors qt5-wayland- Download KWin.app.zip from GitHub Releases
killall picom openboxto quit the previous compositor and window manager- Double-click to open the zip file
- Double-click KWin to launch it
Building
- Run FreeBSD 12.2 with the
plasma5-kwinandbreezeenhancedpackages installed - Create and change to a temporary directory
- Run
makebundle.sh
Notes
- Part of the size reduction comes from using stub libraries that just do nothing but implement the symbols to satisfy the dependencies without having to change the source code.
kwin_x11can run fine when using stubs for libKF5Attica, libKF5Crash, libKScreenLocker, libKF5Notifications, libKF5Codecs, libKF5Auth, libKF5AuthCore, libKF5WidgetsAddons, libKF5WaylandClient, libKWaylandServer, libwayland-server - Hence, making those weak (optional) dependencies or removing them altogether as dependencies should be possible by patching the KWin source code. Any help appreciated.
- When trying to also replace the libKF5KIOCore, libKF5KIOWidgets, libKF5XmlGui libraries with stubs, then we get
dbus[2585]: arguments to dbus_message_iter_append_basic() were incorrect, assertion "*bool_p == 0 || *bool_p == 1" failed in file dbus-message.c line 2783.Possibly this can be solved by patching the KWin source code. Any help appreciated. - When trying to also replace the libKF5ConfigGui and libKF5ConfigWidgets libraries with stubs, then
kwin_x11refuses to run even when invoked with--lock. Possibly this can be solved by patching the KWin source code. Any help appreciated. - It is not clear how central the following are to the operation of KWin and whether making them optional would be feasible: libKF5Plasma, libKF5GuiAddons, libKF5Package, libKF5ConfigGui, libKF5Service, libKF5CoreAddons, libKF5I18n. Trying to replace those with stubs leads to crashes. Possibly this can be solved by patching the KWin source code. Any help appreciated.
TODO
- Work with upstream to remove the need for stub libraries by making the respective libraries weak (optional) dependencies or removing them altogether as dependencies