keybindingstouch-bar
I'd like to customize what the keys in my Macbook Pro's touch bar do. For instance, I have no interest in Siri but I'd be great to have the Siri key be the hotkey for iterm2 for instance.
Is there a way to customize the action for the "system" part of the touch bar's keys?
There is no way to customize it yet. Seems to be ample space to place them around the "Play" icon.
As @Patrick mentions in his answer, one cause of this problem is Karabiner-Elements not enabling the Touch Bar "keyboard" by default. The solution is to enable that keyboard in Karabiner-Elements Preferences (Vendor ID 1452, Product ID 34304) as shown in following screenshot:
I filed Touch Bar keyboard should be enabled by default · Issue #1700 · tekezo/Karabiner-Elements to request it be enabled by default in Karabiner-Elements.
More information in the following comments:
Best Answer
Whilst you can't completely customise the actions provided in the control strip, you can replace or remove buttons with other Apple-provided buttons. Go to System Preferences → Keyboard → Customise Control Strip… and replace the buttons on the Touch Bar with any other options.