Add feature to differentiate OS

[thomasrogerlux]

Hello,

Currently with the hosts option in the link task I can differentiate Linux and MacOS only if I enter specific hostname for each of my machines.

It would be a nice feature to keep the same system but to allow differentiation of the OS.

Here is an example:

"link": {
    "~/.emacs": {
        "os": {
            "Darwin": "emacs.macos",
            "Linux": "emacs.linux",
            "-": "emacs.generic"
        }
    }
}

It could be used to have different path depending on the operating system too:

"link": {
    "~/Library/Application Support/Code/User/settings.json": {
        "os": {
            "Darwin": "settings.json"
        }
    },
    "~/.config/Code/User/settings.json": {
        "os": {
            "Linux": "settings.json"
        }
    }
}

[arcticicestudio]

Thanks for your contribution 👍

Sounds like a nice idea, I've also had situations where two different systems had the same hostname e.g. my main system and my Raspberry Pi, but this feature needs to be more specified before actually implementing it.

Feature Specification Notes

• Evaluate which reliable and stable method should be used to receive the OS type. It must work for all common OS, including platforms like a Raspberry Pi (ARM).
• Evaluate a way to safely fallback when the OS could not be detected
• How to handle configurations where both hosts and os keys are present?
  • Handle via hierarchical order (os takes preference over hosts)?
• Evaluate to integrate the feature into the existing hosts option e.g. optionally allow any key of hosts to provide an array instead of a string where the second index can include the OS types.