g3kb-switch
This is a CLI keyboard layout switcher for Gnome 3 and 4x. It is not based on the X interface but rather implements direct D-Bus messaging with the Gnome Shell.
Installation
Build requires glib-2.0, so you need to install the corresponding development package.
In Ubuntu.
$ sudo apt-get install libglib2.0-devIn Fedora / RHEL / CentOS.
$ sudo dnf install glib2-develIn Gentoo.
$ sudo emerge -av dev-libs/glibCommands may differ in other Linux distributions.
Now build the program.
$ mkdir build && cd build
$ cmake -DCMAKE_BUILD_TYPE=Release ..
$ make
$ sudo make installIn Gnome 41 the switcher will only work with G3kbSwitch Gnome Shell extension because method org.gnome.Shell.Eval that was used in the original implementation of the switcher is now disabled for security reasons. In this case, an additional option must be passed to cmake.
$ cmake -DCMAKE_BUILD_TYPE=Release -DG3KBSWITCH_WITH_GNOME_SHELL_EXTENSION=ON ..Also, the extension must be installed.
$ cd ../extension
$ make install # no sudo required!It is wise to make sure that the extension works correctly. In Fedora 34 and 35 it must be enabled from gnome-extensions-app.
A small smoke-test of the extension.
$ gdbus call --session --dest org.gnome.Shell --object-path /org/g3kbswitch/G3kbSwitch --method org.g3kbswitch.G3kbSwitch.List
(true, '[{"key":"0","value":"ru"},{"key":"1","value":"us"}]')
$ gdbus call --session --dest org.gnome.Shell --object-path /org/g3kbswitch/G3kbSwitch --method org.g3kbswitch.G3kbSwitch.Get
(true, '1')
$ gdbus call --session --dest org.gnome.Shell --object-path /org/g3kbswitch/G3kbSwitch --method org.g3kbswitch.G3kbSwitch.Set 1
(true, '')Usage
Usage: g3kb-switch [-p] Show the current layout group
g3kb-switch -l Show available layout groups
g3kb-switch -n Switch to the next layout group
g3kb-switch -s ARG Switch to layout group ARG
g3kb-switch -h Show this message and exit
g3kb-switch -v Show the program version and exitIntegration with vim-xkbswitch
Basically, put in .vimrc lines
let g:XkbSwitchEnabled = 1
let g:XkbSwitchLib = '/usr/local/lib/libg3kbswitch.so'See details about configuration rules for vim-xkbswitch here.