om health: Add --json

[shivaraj-bh]

resolves #374

❯ om health —json > health.json
❯ cat health.json
{
  "trusted-users": {
    "title": "Trusted Users",
    "info": "trusted-users = root shivaraj",
    "result": "Green",
    "required": true
  },
  "caches": {
    "title": "Nix Caches in use",
    "info": "substituters = https://cache.nixos.org/ https://euler.cachix.org/ https://newton.cachix.org/ https://om.cachix.org/",
    "result": "Green",
    "required": true
  },
  "max-jobs": {
    "title": "Max Jobs",
    "info": "max-jobs = 8",
    "result": "Green",
    "required": true
  },
  "nix-version": {
    "title": "Minimum Nix Version",
    "info": "nix version = 2.24.10",
    "result": "Green",
    "required": true
  },
  "rosetta": {
    "title": "Rosetta Not Active",
    "info": "apple emulation = None",
    "result": "Green",
    "required": true
  },
  "direnv-install-check": {
    "title": "Direnv installation",
    "info": "direnv location = Some(\"/Users/shivaraj/.nix-profile/bin/direnv\")",
    "result": "Green",
    "required": false
  },
  "shell": {
    "title": "Shell dotfiles",
    "info": "Shell=Zsh; HOME=\"/Users/shivaraj\"; Managed: {\".zshrc\": \"/nix/store/rxw82293y8b3nc65k2d49ji9i8kbc375-hm_.zshrc\", \".zshenv\": \"/nix/store/csica6diirv3swl0gqhwvpkyh8r7fhfw-hm_.zshenv\"}; Unmanaged: {\".zprofile\": \"/Users/shivaraj/.zprofile\"}",
    "result": {
      "Red": {
        "msg": "Default Shell: Zsh is not managed by Nix",
        "suggestion": "You can use `home-manager` to manage shell configuration. See <https://github.com/juspay/nixos-unified-template>"
      }
    },
    "required": false
  },
  "flake-enabled": {
    "title": "Flakes Enabled",
    "info": "experimental-features = flakes fetch-tree nix-command",
    "result": "Green",
    "required": true
  }
}

[srid]

I see the required flag, but not enabled? If a check is disabled, how does it show up in the JSON?

[shivaraj-bh]

I see the required flag, but not enabled? If a check is disabled, how does it show up in the JSON?

enabled field is not part of

omnix/crates/omnix-health/src/traits.rs

Lines 23 to 41 in 008fa1d

	#[derive(Debug, Serialize, Deserialize, PartialEq, Eq, Clone)]
	pub struct Check {
	/// A user-facing title of this check
	///
	/// This value is expected to be unique across all checks.
	pub title: String,
	/// The user-facing information used to conduct this check
	/// TODO: Use Markdown
	pub info: String,
	/// The result of running this check
	pub result: CheckResult,
	/// Whether this check is mandatory
	///
	/// Failures are considered non-critical if this is false.
	pub required: bool,
	}

[shivaraj-bh]

I see the required flag, but not enabled? If a check is disabled, how does it show up in the JSON?

If a check is disabled, it will be only the key with empty hashmap as its value.

[srid]

LGTM