split list machines into show machine command

pkgs/clan-cli/clan_cli/machines/show.py

@@ -0,0 +1,58 @@
+import argparse
+import dataclasses
+import json
+import logging
+from pathlib import Path
+
+from clan_cli.api import API
+
+from ..cmd import run_no_stdout
+from ..nix import nix_config, nix_eval
+from .types import machine_name_type
+
+log = logging.getLogger(__name__)
+
+
+@dataclasses.dataclass
+class MachineInfo:
+    machine_name: str
+    machine_description: str | None
+    machine_icon: str | None
+
+
+@API.register
+def show_machine(flake_url: str | Path, machine_name: str, debug: bool) -> MachineInfo:
+    config = nix_config()
+    system = config["system"]
+    cmd = nix_eval(
+        [
+            f"{flake_url}#clanInternals.machines.{system}.{machine_name}",
+            "--apply",
+            "machine: { inherit (machine.config.clanCore) machineDescription machineIcon machineName; }",
+            "--json",
+        ]
+    )
+    proc = run_no_stdout(cmd)
+    res = proc.stdout.strip()
+    machine = json.loads(res)
+
+    return MachineInfo(
+        machine_name=machine.get("machineName"),
+        machine_description=machine.get("machineDescription", None),
+        machine_icon=machine.get("machineIcon", None),
+    )
+
+
+def show_command(args: argparse.Namespace) -> None:
+    flake_path = Path(args.flake).resolve()
+    machine = show_machine(flake_path, args.machine, args.debug)
+    print(f"Name: {machine.machine_name}")
+    print(f"Description: {machine.machine_description or ''}")
+    print(f"Icon: {machine.machine_icon or ''}")
+
+
+def register_show_parser(parser: argparse.ArgumentParser) -> None:
+    parser.set_defaults(func=show_command)
+    parser.add_argument(
+        "machine", help="the name of the machine", type=machine_name_type
+    )