Lifehack of binding key to 'show desktop' on GuixSD

[<znavko@tutanota.com>]

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Hello! I am using GuixSD and Xfce4 desktop environment.
There is shortcut on my panel that shows desktop: http://0x0.st/zPx4.png <http://0x0.st/zPx4.png>

How to bind keyboard key to minimize all windows and show desktop?
By default there is such key bind: Ctrl + Alt + D  -- this shows desktop on Xfce4.
But I want to use just only one button - Menu - this is extra button between Ctrl and Alt in the right side, cause I do not use it at all.
I install wmctrl
$ guix package -i wmctrl

according to the manual https://linux.die.net/man/1/wmctrl <https://linux.die.net/man/1/wmctrl> need to use command
$ wmctrl -k on

To bind a key to this command I open on Xfce4: Menu -> Settings -> Keyboard. 
(or also you can open settings from terminal: `xfce4-settings-manager` and choose Keyboard menu)
'Application Shortcuts' tab there and add command 'wmctrl -k on' and press 'Menu' when it asks to press.

I've got this line: http://0x0.st/zPxx.png <http://0x0.st/zPxx.png>

Now it works permanently.

Also I usually change keyboard layout selection button to left Menu button.

There is also xdotool in guix that might be helpful for tasks like this.

znavko.


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