Allow running script idempotently

[srid]

1. Run om health --json
2. If nix is not installed, run detsys nix installer, and re-run om health --json (requires Add om health --json omnix#374 )
3. Take om health's JSON, and check if home-manager was setup
4. If not, om init our template at ~/nixconfig (taking backup of old one if necessary) and nix run it (taking care of Move existing dotfiles out of the way #9)
5. Run om health again

Bonus: #2

[srid]

~/nixconfig

Let's use ~/.config/home-manager as the path, as that's where home-manager init creates by default.

[shivaraj-bh]

If nix is not installed, run detsys nix installer

Won’t we need the om static binary here?

[srid]

Why? To check "if nix is not installed"? Can't you just run nix --version to check that?

[shivaraj-bh]

Might have to fix juspay/omnix#396 before using shell check to determine home-manager presence

Edit: nevermind