Karabiner vim setup (mac)

karabiner-mac.json

{
  "description": "Windows Keyboard Fix + Vim Navigation (Caps/Right-Alt)",
  "manipulators": [
    {
      "description": "Caps Lock: Hold for Vim Mode, Tap for Escape",
      "from": {
        "key_code": "caps_lock",
        "modifiers": { "optional": ["any"] }
      },
      "to": [
        {
          "set_variable": {
            "name": "vim_mode",
            "value": 1
          }
        }
      ],
      "to_after_key_up": [
        {
          "set_variable": {
            "name": "vim_mode",
            "value": 0
          }
        }
      ],
      "to_if_alone": [{ "key_code": "escape" }],
      "type": "basic"
    },
    {
      "conditions": [
        {
          "name": "vim_mode",
          "type": "variable_if",
          "value": 1
        }
      ],
      "from": {
        "key_code": "h",
        "modifiers": { "optional": ["any"] }
      },
      "to": [{ "key_code": "left_arrow" }],
      "type": "basic"
    },
    {
      "conditions": [
        {
          "name": "vim_mode",
          "type": "variable_if",
          "value": 1
        }
      ],
      "from": {
        "key_code": "j",
        "modifiers": { "optional": ["any"] }
      },
      "to": [{ "key_code": "down_arrow" }],
      "type": "basic"
    },
    {
      "conditions": [
        {
          "name": "vim_mode",
          "type": "variable_if",
          "value": 1
        }
      ],
      "from": {
        "key_code": "k",
        "modifiers": { "optional": ["any"] }
      },
      "to": [{ "key_code": "up_arrow" }],
      "type": "basic"
    },
    {
      "conditions": [
        {
          "name": "vim_mode",
          "type": "variable_if",
          "value": 1
        }
      ],
      "from": {
        "key_code": "l",
        "modifiers": { "optional": ["any"] }
      },
      "to": [{ "key_code": "right_arrow" }],
      "type": "basic"
    },
    {
      "conditions": [
        {
          "name": "vim_mode",
          "type": "variable_if",
          "value": 1
        }
      ],
      "from": {
        "key_code": "u",
        "modifiers": { "optional": ["any"] }
      },
      "to": [{ "key_code": "page_up" }],
      "type": "basic"
    },
    {
      "conditions": [
        {
          "name": "vim_mode",
          "type": "variable_if",
          "value": 1
        }
      ],
      "from": {
        "key_code": "f",
        "modifiers": { "optional": ["any"] }
      },
      "to": [{ "key_code": "page_down" }],
      "type": "basic"
    },
    {
      "conditions": [
        {
          "name": "vim_mode",
          "type": "variable_if",
          "value": 1
        }
      ],
      "from": {
        "key_code": "w",
        "modifiers": { "optional": ["any"] }
      },
      "to": [
        {
          "key_code": "right_arrow",
          "modifiers": ["left_option"]
        }
      ],
      "type": "basic"
    },
    {
      "conditions": [
        {
          "name": "vim_mode",
          "type": "variable_if",
          "value": 1
        }
      ],
      "from": {
        "key_code": "b",
        "modifiers": { "optional": ["any"] }
      },
      "to": [
        {
          "key_code": "left_arrow",
          "modifiers": ["left_option"]
        }
      ],
      "type": "basic"
    },
    {
      "conditions": [
        {
          "name": "vim_mode",
          "type": "variable_if",
          "value": 1
        }
      ],
      "from": {
        "key_code": "e",
        "modifiers": { "optional": ["any"] }
      },
      "to": [
        {
          "key_code": "right_arrow",
          "modifiers": ["left_option"]
        }
      ],
      "type": "basic"
    },
    {
      "conditions": [
        {
          "name": "vim_mode",
          "type": "variable_if",
          "value": 1
        }
      ],
      "from": {
        "key_code": "d",
        "modifiers": { "optional": ["any"] }
      },
      "to": [{ "key_code": "page_down" }],
      "type": "basic"
    },
    {
      "conditions": [
        {
          "name": "vim_mode",
          "type": "variable_if",
          "value": 1
        }
      ],
      "from": {
        "key_code": "y",
        "modifiers": { "optional": ["any"] }
      },
      "to": [
        {
          "key_code": "c",
          "modifiers": ["left_command"]
        }
      ],
      "type": "basic"
    },
    {
      "conditions": [
        {
          "name": "vim_mode",
          "type": "variable_if",
          "value": 1
        }
      ],
      "from": {
        "key_code": "p",
        "modifiers": { "optional": ["any"] }
      },
      "to": [
        {
          "key_code": "v",
          "modifiers": ["left_command"]
        }
      ],
      "type": "basic"
    },
    {
      "conditions": [
        {
          "name": "vim_mode",
          "type": "variable_if",
          "value": 1
        }
      ],
      "from": {
        "key_code": "4",
        "modifiers": { "optional": ["any"] }
      },
      "to": [
        {
          "key_code": "right_arrow",
          "modifiers": ["left_command"]
        }
      ],
      "type": "basic"
    },
    {
      "conditions": [
        {
          "name": "vim_mode",
          "type": "variable_if",
          "value": 1
        }
      ],
      "from": {
        "key_code": "hyphen",
        "modifiers": { "optional": ["any"] }
      },
      "to": [
        {
          "key_code": "left_arrow",
          "modifiers": ["left_command"]
        }
      ],
      "type": "basic"
    },
    {
      "description": "Right Command (Right Alt) Navigation",
      "from": {
        "key_code": "h",
        "modifiers": {
          "mandatory": ["right_command"],
          "optional": ["any"]
        }
      },
      "to": [{ "key_code": "left_arrow" }],
      "type": "basic"
    },
    {
      "from": {
        "key_code": "j",
        "modifiers": {
          "mandatory": ["right_command"],
          "optional": ["any"]
        }
      },
      "to": [{ "key_code": "down_arrow" }],
      "type": "basic"
    },
    {
      "from": {
        "key_code": "k",
        "modifiers": {
          "mandatory": ["right_command"],
          "optional": ["any"]
        }
      },
      "to": [{ "key_code": "up_arrow" }],
      "type": "basic"
    },
    {
      "from": {
        "key_code": "l",
        "modifiers": {
          "mandatory": ["right_command"],
          "optional": ["any"]
        }
      },
      "to": [{ "key_code": "right_arrow" }],
      "type": "basic"
    },
    {
      "from": {
        "key_code": "4",
        "modifiers": {
          "mandatory": ["right_command"],
          "optional": ["any"]
        }
      },
      "to": [
        {
          "key_code": "right_arrow",
          "modifiers": ["left_command"]
        }
      ],
      "type": "basic"
    },
    {
      "from": {
        "key_code": "hyphen",
        "modifiers": {
          "mandatory": ["right_command"],
          "optional": ["any"]
        }
      },
      "to": [
        {
          "key_code": "left_arrow",
          "modifiers": ["left_command"]
        }
      ],
      "type": "basic"
    }
  ]
}