Karabiner private.xml to swap option and command keys for Parallels

private.xml

<?xml version="1.0"?>
<root>
  <appdef>
    <appname>PARALLELS</appname>
    <equal>com.parallels.desktop.console</equal>
  </appdef>

  <devicevendordef>
    <vendorname>MICROSOFT</vendorname>
    <vendorid>0x045e</vendorid>
  </devicevendordef>

  <deviceproductdef>
    <productname>MICROSOFT_ERGONOMIC_KEYBOARD</productname>
    <productid>0x00db</productid>
  </deviceproductdef>

  <item>
    <name>Swap Command and Option (Parallels)</name>
    <identifier>private.app_parallels_swap_command_and_option</identifier>
    <only>PARALLELS</only>
    <device_only>DeviceVendor::MICROSOFT, DeviceProduct::MICROSOFT_ERGONOMIC_KEYBOARD</device_only>
    <autogen>__KeyToKey__ KeyCode::OPTION_L, KeyCode::COMMAND_L</autogen>
    <autogen>__KeyToKey__ KeyCode::COMMAND_L, KeyCode::OPTION_L</autogen>
    <autogen>__KeyToKey__ KeyCode::COMMAND_R, KeyCode::OPTION_L</autogen>
  </item>
</root>

@drmohundro

You seem to understand this quiet a bit. Would you be able to help me with the problem I am having?
I want to remap the WINDOWS key to the ALT_LEFT key (if possible ONLY for my windows keyboard, if not profiles are fine).
Thing is that the command and alt key on mac are reversed on a windows keyboard. I would like to start coding with my mechanical keyboard (which is the windows layout). This is with removable keycaps, so when I would start working I would simple switch the two keycaps.

BTW: this is what I have now, but it is not working.. (also dont know how to check if this is 'active').

<item> <name>Swap Command and lEFT Alt</name> <identifier>private.swap_command_and_alt</identifier> <autogen>__KeyToKey__ KeyCode::COMMAND_L, KeyCode::OPTION_L</autogen> <autogen>__KeyToKey__ KeyCode::OPTION_L, KeyCode::COMMAND_L</autogen> </item>

Thanks

@NicolasVanhecke my apologies, but I never was notified of your comment, otherwise I would have tried to respond!

I'm not sure off hand what might be going on with your problem, but I will say that, if you're on MacOS Sierra, Karabiner doesn't work any more and you'd need Karabiner Elements instead. That's actually what I'm using now and it has a GUI for mapping keys per device (which is a relatively new feature). It's a lot easier than messing with the private.xml file.

Regarding notifications... oh. This is why - isaacs/github#21. 🤦‍♂️

See latest Karabiner Elements support to give me all of these options at https://github.com/drmohundro/dotfiles/blob/master/config/karabiner/karabiner.json.