nix-config/extras/.httpie/config.json

{
    "__meta__": {
        "about": "HTTPie configuration file",
        "help": "https://httpie.org/doc#config",
        "httpie": "1.0.0"
    },
    "default_options": [
        "--session-read-only",
        "~/.httpie/headers.json"
    ]
}