Proposed methods don't work for Fedora 35

[CptnGreen]

Found a solution based on the last method with get-im/set-im scripts but using gsettings instead of gdbus:

get-im.sh

#!/bin/bash

# "mru" stands for "most recently used"
gsettings get \
	org.gnome.desktop.input-sources mru-sources \
	| awk -F "), " ' { print $1 } ' \
	| awk -F\' ' { print $4 } '

set-im.sh

#!/bin/bash

gsettings set \
	org.gnome.desktop.input-sources sources "[('xkb', '$1')]"

# here you have your own list of languages which you can get via 
# `gsettings get org.gnome.desktop.input-sources sources`
gsettings set \
	org.gnome.desktop.input-sources sources "[('xkb', 'us'), ('xkb', 'ru')]"

Trick is that gsettings holds active that single option you pass to it in the first set command.

Hope this helps somebody.
Please consider appending to docs.

[daipeihust]

you can create a pull request

[ahmafi]

I have tried this, and it works, but when I switch from normal mode to insert mode with cw or any other shortcut for changing the text, the cursor doesn't get changed from block cursor to line cursor.