mac 2026-08-29 21:34:52 → now 1 session(s) Session Started Where Title baHP3e 2026-08-30 20:57 Code/dashboard Systemd inhibit sleep plugin ⚑ ❬baHP3e❭ Systemd inhibit sleep plugin ~/Code/dashboard ──────────────────────────────────────────────────────────────────────────────────────────────────── │ 2026-08-30 20:57:50 • user │ │ We're implementing a new plugin. It should show if the PC may be able to go to sleep right now │ by running `systemd-inhibit --json=short --mode=block --list` and show the current inhibitors. │ KDE's powerdevil does not inhibit sleep or shutdown, it just blocks the system from doing that │ because it does not know when user input happens on the desktop. │ │ In addition to showing inhibition state it should be possible to disable sleeping by flipping a │ switch so the dashboard itself inhibits sleep. │ 2026-08-30 20:57:50 • assistant • Qwen3.8-27B-Think @plan │ │ I'm in plan mode, so I'll be working read-only while exploring the codebase to understand the │ plugin system and build a plan for a new sleep inhibitor plugin. │ │ read /home/mac/Code/dashboard/app/plugins ok 0.0s │ in │ { │ "filePath": "/home/mac/Code/dashboard/app/plugins" │ } │ out │ /home/mac/Code/dashboard/app/pluginsdirectory │ __init__.py │ __pycache__/ │ base.py │ llamacpp.py │ │ (4 entries) │ │ glob app/plugins/**/*.py ok 0.0s │ in │ { │ "pattern": "app/plugins/**/*.py" │ } │ out │ /home/mac/Code/dashboard/app/plugins/llamacpp.py │ /home/mac/Code/dashboard/app/plugins/base.py │ /home/mac/Code/dashboard/app/plugins/__init__.py │ │ tokens 559 in 97 out 8747 cached 0 written $0.0000 tool-calls │ 2026-08-30 20:57:58 • assistant • Qwen3.8-27B-Think @plan │ │ I'll read through the plugin files and get a grasp of the plugin architecture. │ │ read /home/mac/Code/dashboard/app/plugins/base.py ok 0.0s │ in │ { │ "filePath": "/home/mac/Code/dashboard/app/plugins/base.py" │ } │ out │ /home/mac/Code/dashboard/app/plugins/base.pyfile │ 1: from collections.abc import Awaitable, Callable │ 2: from dataclasses import dataclass, field │ 3: │ 4: │ 5: @dataclass │ 6: class Plugin: │ 7: id: str │ 8: title: str │ 9: description: str = "" │ 10: skeleton_fn: Callable[[], Awaitable[str]] | None = field(default=None) │ 11: │ 12: async def skeleton(self) -> str: │ 13: if self.skeleton_fn is None: │ 14: raise NotImplementedError │ 15: return await self.skeleton_fn() │ │ (End of file - total 15 lines) │ │ read /home/mac/Code/dashboard/app/plugins/__init__.py ok 0.0s │ in │ { │ "filePath": "/home/mac/Code/dashboard/app/plugins/__init__.py" │ } │ out │ /home/mac/Code/dashboard/app/plugins/__init__.pyfile │ 1: from app.plugins.base import Plugin │ 2: from app.plugins.llamacpp import plugin as llamacpp_plugin, router as llamacpp_router │ 3: │ 4: PLUGINS: list[Plugin] = [llamacpp_plugin] │ 5: ROUTERS = [llamacpp_router] │ 6: │ 7: __all__ = ["PLUGINS", "ROUTERS", "Plugin"] │ │ (End of file - total 7 lines) │ │ read /home/mac/Code/dashboard/app/plugins/llamacpp.py ok 0.0s │ in │ { │ "filePath": "/home/mac/Code/dashboard/app/plugins/llamacpp.py" │ } │ out │ /home/mac/Code/dashboard/app/plugins/llamacpp.pyfile │ 1: from typing import Any │ 2: │ 3: import httpx │ 4: from fastapi import APIRouter, Form │ 5: from fastapi.responses import HTMLResponse │ 6: │ 7: from app.config import Settings, get_settings │ 8: from app.plugins.base import Plugin │ 9: from app.render import render │ 10: │ 11: router = APIRouter(prefix="/api/plugins/llamacpp", tags=["plugins"]) │ 12: │ 13: │ 14: def _headers(settings: Settings) -> dict[str, str]: │ 15: h = {} │ 16: if settings.llama_api_key: │ 17: h["Authorization"] = f"Bearer {settings.llama_api_key}" │ 18: return h │ 19: │ 20: │ 21: def _client() -> httpx.AsyncClient: │ 22: settings = get_settings() │ 23: return httpx.AsyncClient( │ 24: base_url=settings.llama_base_url.rstrip("/"), │ 25: timeout=settings.llama_timeout, │ 26: headers=_headers(settings), │ 27: ) │ 28: │ 29: │ 30: async def gather_status() -> dict[str, Any]: │ 31: """Query the llama-server router. Never raises; returns status dict.""" │ 32: settings = get_settings() │ 33: status: dict[str, Any] = { │ 34: "base_url": settings.llama_base_url, │ 35: "reachable": False, │ 36: "health": None, │ 37: "models": [], │ 38: "error": None, │ 39: } │ 40: try: │ 41: async with _client() as client: │ 42: try: │ 43: r = await client.get("/health") │ 44: status["health"] = r.json().get("status") if r.status_code == 200 else │ f"http {r.status_code}" │ 45: except httpx.HTTPError: │ 46: pass │ 47: r = await client.get("/models") │ 48: _ = r.raise_for_status() │ 49: status["reachable"] = True │ 50: data = r.json() │ 51: for m in data.get("data", []): │ 52: st: dict[str, Any] = m.get("status") or {} │ 53: item: dict[str, str | bool | float] = { │ 54: "id": str(m.get("id", "?")), │ 55: "sta │ … [4249 more chars] │ │ tokens 106 in 123 out 9402 cached 0 written $0.0000 tool-calls │ 2026-08-30 20:58:01 • assistant • Qwen3.8-27B-Think @plan │ │ Next, let's look at the plugins router, the template, and the render module to understand how │ plugins get displayed. │ │ glob app/routers/*.py ok 0.0s │ in │ { │ "pattern": "app/routers/*.py" │ } │ out │ /home/mac/Code/dashboard/app/routers/disks.py │ /home/mac/Code/dashboard/app/routers/processes.py │ /home/mac/Code/dashboard/app/routers/services.py │ /home/mac/Code/dashboard/app/routers/journal.py │ /home/mac/Code/dashboard/app/routers/plugins.py │ /home/mac/Code/dashboard/app/routers/overview.py │ /home/mac/Code/dashboard/app/routers/__init__.py │ glob templates/plugins/*.html ok 0.0s │ in │ { │ "pattern": "templates/plugins/*.html" │ } │ out │ /home/mac/Code/dashboard/templates/plugins/llamacpp_state.html │ /home/mac/Code/dashboard/templates/plugins/llamacpp_skeleton.html │ read /home/mac/Code/dashboard/app/render.py ok 0.0s │ in │ { │ "filePath": "/home/mac/Code/dashboard/app/render.py" │ } │ out │ /home/mac/Code/dashboard/app/render.pyfile │ 1: from datetime import timedelta │ 2: from pathlib import Path │ 3: from typing import Any │ 4: │ 5: from jinja2 import Environment, FileSystemLoader, select_autoescape │ 6: │ 7: BASE = Path(__file__).resolve().parent.parent │ 8: │ 9: │ 10: def humanize(value: float | str | None) -> str: │ 11: if value is None: │ 12: return "—" │ 13: n = float(value) │ 14: for unit in ("B", "KiB", "MiB", "GiB", "TiB"): │ 15: if abs(n) < 1024 or unit == "TiB": │ 16: if unit == "B": │ 17: return f"{int(n)} B" │ 18: return f"{n:.1f} {unit}" │ 19: n /= 1024 │ 20: return f"{n:.1f} TiB" │ 21: │ 22: │ 23: def rate(value: float | str | None) -> str: │ 24: if value is None: │ 25: return "—" │ 26: n = float(value) │ 27: for unit in ("B/s", "KiB/s", "MiB/s", "GiB/s"): │ 28: if abs(n) < 1024 or unit == "GiB/s": │ 29: if unit == "B/s": │ 30: return f"{int(n)} B/s" │ 31: return f"{n:.1f} {unit}" │ 32: n /= 1024 │ 33: return f"{n:.1f} GiB/s" │ 34: │ 35: │ 36: def uptime_str(seconds: float | None) -> str: │ 37: if seconds is None: │ 38: return "—" │ 39: td = timedelta(seconds=int(seconds)) │ 40: days, rem = divmod(td.seconds, 86400) │ 41: hours, rem = divmod(rem, 3600) │ 42: minutes = rem // 60 │ 43: parts: list[str] = [] │ 44: if days: │ 45: parts.append(f"{days}d") │ 46: if days or hours: │ 47: parts.append(f"{hours}h") │ 48: parts.append(f"{minutes}m") │ 49: return " ".join(parts) │ 50: │ 51: │ 52: def pct(value: float | None) -> str: │ 53: if value is None: │ 54: return "—" │ 55: return f"{value:.0f}%" │ 56: │ 57: │ 58: env = Environment( │ 59: loader=FileSystemLoader(BASE / "templates"), │ 60: autoescape=select_autoescape(("html", "j2")), │ 61: ) │ 62: env.filters["humanize"] = humanize │ 63: env.filters["rate"] = rate │ 64: env.filters["uptime"] = uptime_str │ 65: env.filters["pct"] │ … [162 more chars] │ │ tokens 2373 in 118 out 9631 cached 0 written $0.0000 tool-calls │ 2026-08-30 20:58:06 • assistant • Qwen3.8-27B-Think @plan │ │ Let's check the plugins router, the llamacpp template, and how the plugins are integrated into │ the main page. │ │ read /home/mac/Code/dashboard/app/routers/plugins.py ok 0.0s │ in │ { │ "filePath": "/home/mac/Code/dashboard/app/routers/plugins.py" │ } │ out │ /home/mac/Code/dashboard/app/routers/plugins.pyfile │ 1: from fastapi import APIRouter │ 2: from fastapi.responses import HTMLResponse │ 3: │ 4: from app.plugins import PLUGINS, Plugin │ 5: from app.render import render │ 6: │ 7: router = APIRouter(prefix="/api/plugins", tags=["plugins"]) │ 8: │ 9: │ 10: @router.get("") │ 11: async def plugins_index(): │ 12: items: list[dict[str, Plugin | str]] = [] │ 13: for p in PLUGINS: │ 14: try: │ 15: body = await p.skeleton() │ 16: except Exception as e: # noqa │ 17: body = f"
plugin error: {e}
" │ 18: items.append({"p": p, "body": body}) │ 19: return HTMLResponse(render("plugins.html", items=items)) │ │ (End of file - total 19 lines) │
│ read /home/mac/Code/dashboard/templates/plugins/llamacpp_skeleton.html ok 0.0s │ in │ { │ "filePath": "/home/mac/Code/dashboard/templates/plugins/llamacpp_skeleton.html" │ } │ out │ /home/mac/Code/dashboard/templates/plugins/llamacpp_skeleton.htmlfile │ 1:
│ 2:
│ 3: {% include "plugins/llamacpp_state.html" %} │ 4:
│ 5: {% if reachable %} │ 6:

Available models

│ 7: {% if available %} │ 8:
│ 9: │ 14: │ 15:
│ 16: {% else %} │ 17:
no unloaded models (is --models-dir set on the server?)
│ 18: {% endif %} │ 19: │ 20:
│ 21: │ 22:
│ 23: {% endif %} │ 24:
│ │ (End of file - total 24 lines) │
│ read /home/mac/Code/dashboard/templates/plugins/llamacpp_state.html ok 0.0s │ in │ { │ "filePath": "/home/mac/Code/dashboard/templates/plugins/llamacpp_state.html" │ } │ out │ /home/mac/Code/dashboard/templates/plugins/llamacpp_state.htmlfile │ 1: {% if not reachable %} │ 2:
llama-server unreachable at {{ base_url }}{% │ if error %}: {{ error }}{% endif %}
│ 3:
start it in router mode: llama-server │ --models-dir /path/to/models
│ 4: {% else %} │ 5:
│ 6: │ 7: {{ "healthy" if health == "ok" else (health or "status │ unknown") }} │ 8: {{ base_url }} │ 9:
│ 10: {% if message %}
{{ message }}
{% endif %} │ 11: {% if error_msg %}
{{ error_msg }}
{% endif %} │ 12: │ 13:

Loaded models

│ 14: {% if loaded %} │ 15:
│ 16: {% for m in loaded %} │ 17:
│ 18: │ 19: {{ m.id }} │ 20: {{ m.state }}{% if │ m.failed %} (exit {{ m.exit_code }}){% endif %} │ 21: {% if m.progress is not none %}
{% endif %} │ 22: │ 23: │ 24: │ 25:
│ 26: {% endfor %} │ 27:
│ 28: {% else %} │ 29:
no models loaded
│ 30: {% endif %} │ 31: {% endif %} │ │ (End of file - total 31 lines) │
│ │ tokens 959 in 136 out 12122 cached 0 written $0.0000 tool-calls │ 2026-08-30 20:58:10 • assistant • Qwen3.8-27B-Think @plan │ │ Next, let's look at the plugins.html template, the main template, and how systemd actions (like │ enable/disable) are handled in the services router. That's because the plugin's toggle switch is │ going to need a POST endpoint. Also, let's check how the service is executing systemd actions │ (probably via `asyncio.create_subprocess_exec`). And let's check app/state.py and config for TTL │ caching patterns. │ │ read /home/mac/Code/dashboard/templates/plugins.html ok 0.0s │ in │ { │ "filePath": "/home/mac/Code/dashboard/templates/plugins.html" │ } │ out │ /home/mac/Code/dashboard/templates/plugins.htmlfile │ 1:
│ 2:
plugins load from app/plugins/ │ — each module exposes a Plugin instance
│ 3: {% for item in items %} │ 4:
│ 5:

{{ item.p.title }}

│ 6:

{{ item.p.description }}

│ 7:
{{ item.body | safe }}
│ 8:
│ 9: {% else %} │ 10:
no plugins registered
│ 11: {% endfor %} │ 12:
│ │ (End of file - total 12 lines) │
│ read /home/mac/Code/dashboard/app/routers/services.py ok 0.0s │ in │ { │ "filePath": "/home/mac/Code/dashboard/app/routers/services.py" │ } │ out │ /home/mac/Code/dashboard/app/routers/services.pyfile │ 1: from typing import Any │ 2: │ 3: from fastapi import APIRouter, Form │ 4: from fastapi.responses import HTMLResponse │ 5: │ 6: from app import journal │ 7: from app.render import render │ 8: from app.systemd import units │ 9: │ 10: router = APIRouter(prefix="/api/services", tags=["services"]) │ 11: │ 12: SORT_KEYS = ("name", "state", "enabled") │ 13: _STATE_RANK = { │ 14: "active": 0, │ 15: "activating": 1, │ 16: "deactivating": 1, │ 17: "reloading": 1, │ 18: "reactivating": 1, │ 19: "failed": 2, │ 20: "inactive": 3, │ 21: "dead": 3, │ 22: "maintenance": 3, │ 23: } │ 24: _ENABLED_RANK = { │ 25: "enabled": 0, │ 26: "indirect": 1, │ 27: "static": 2, │ 28: "disabled": 3, │ 29: "alias": 4, │ 30: "linked": 4, │ 31: "linked-runtime": 4, │ 32: "masked": 5, │ 33: "": 6, │ 34: } │ 35: │ 36: │ 37: def _rank(u: dict[str, Any], key: str) -> int: │ 38: if key == "state": │ 39: return _STATE_RANK.get(u["active"], 9) │ 40: if key == "enabled": │ 41: return _ENABLED_RANK.get(u["enabled"], 9) │ 42: return 0 │ 43: │ 44: │ 45: async def _list_fragment(q: str, sort: str = "name", order: str = "asc", error: str | │ None = None) -> str: │ 46: if sort not in SORT_KEYS: │ 47: sort = "name" │ 48: if order not in ("asc", "desc"): │ 49: order = "asc" │ 50: unit_list = await units.unit_list() │ 51: if q: │ 52: ql = q.lower() │ 53: unit_list = [ │ 54: u for u in unit_list if ql in u["name"].lower() or ql in u["desc"].lower() │ 55: ] │ 56: reverse = order == "desc" │ 57: if sort == "name": │ 58: unit_list.sort(key=lambda u: u["name"], reverse=reverse) │ 59: else: │ 60: unit_list.sort(key=lambda u: (_rank(u, sort), u["name"]), reverse=reverse) │ 61: state = await units.system_state() │ 62: return render( │ 63: "services.html", │ 64: units=unit_list, │ 65: state=state, │ 66: q=q, │ 67: sort │ … [1422 more chars] │ │ tokens 1369 in 153 out 13217 cached 0 written $0.0000 tool-calls │ 2026-08-30 20:58:16 • assistant • Qwen3.8-27B-Think @plan │ │ Let's check how systemd units are being executed (subprocess patterns), and also check the │ state/config for TTL caching patterns. I'll also check main.py to see how the router is │ registered. │ │ read /home/mac/Code/dashboard/app/systemd/units.py ok 0.0s │ in │ { │ "filePath": "/home/mac/Code/dashboard/app/systemd/units.py" │ } │ out │ /home/mac/Code/dashboard/app/systemd/units.pyfile │ 1: import asyncio │ 2: import re │ 3: import time │ 4: │ 5: UNIT_RE = re.compile(r"^[A-Za-z0-9@:_.\-+]+\.(service|socket|timer|target|path|slice)$") │ 6: ACTIONS = ("start", "stop", "restart", "enable", "disable") │ 7: │ 8: _enabled_cache: dict[str, str] | None = None │ 9: _enabled_cache_at = 0.0 │ 10: _ENABLED_TTL = 30.0 │ 11: │ 12: _DETAIL_PROPS = ( │ 13: "ActiveState,SubState,LoadState,UnitFileState,Description,MainPID," │ 14: "ExecMainStartTimestamp,NRestarts,FragmentPath,Result" │ 15: ) │ 16: │ 17: │ 18: async def _run(cmd: list[str]) -> tuple[int, str, str]: │ 19: proc = await asyncio.create_subprocess_exec( │ 20: *cmd, │ 21: stdout=asyncio.subprocess.PIPE, │ 22: stderr=asyncio.subprocess.PIPE, │ 23: ) │ 24: out, err = await proc.communicate() │ 25: return proc.returncode or 0, out.decode(errors="replace"), │ err.decode(errors="replace") │ 26: │ 27: │ 28: async def _systemctl(*args: str, privileged: bool = False) -> str: │ 29: # Privileged verbs always go through sudo: plain attempts just get │ 30: # rejected by systemd and spam the journal with auth failures. │ 31: cmd = (["sudo", "systemctl", *args] if privileged else ["systemctl", *args]) │ 32: rc, out, err = await _run(cmd) │ 33: if rc == 0: │ 34: return out │ 35: raise RuntimeError(err.strip() or f"systemctl {' '.join(args)} failed") │ 36: │ 37: │ 38: async def _enabled_map(force: bool = False) -> dict[str, str]: │ 39: global _enabled_cache, _enabled_cache_at │ 40: now = time.monotonic() │ 41: if not force and _enabled_cache is not None and now - _enabled_cache_at < │ _ENABLED_TTL: │ 42: return _enabled_cache │ 43: files = await _systemctl("list-unit-files", "--type=service", "--no-legend", │ "--plain") │ 44: m: dict[str, str] = {} │ 45: for line in files.splitlines(): │ 46: parts = line.split(None, 2) │ 47: if len(parts) < 2: │ 48: continue │ 49: m[parts[0]] = part │ … [2426 more chars] │ read /home/mac/Code/dashboard/main.py ok 0.0s │ in │ { │ "filePath": "/home/mac/Code/dashboard/main.py" │ } │ out │ /home/mac/Code/dashboard/main.pyfile │ 1: import uvicorn │ 2: │ 3: from app.config import get_settings │ 4: │ 5: if __name__ == "__main__": │ 6: s = get_settings() │ 7: uvicorn.run("app.main:app", host=s.host, port=s.port, log_level="warning") │ │ (End of file - total 7 lines) │ │ │ tokens 1514 in 108 out 14739 cached 0 written $0.0000 tool-calls │ 2026-08-30 20:58:21 • assistant • Qwen3.8-27B-Think @plan │ │ Next, let's check app/main.py to see how the router is registered, and also check config.py. │ │ read /home/mac/Code/dashboard/app/main.py ok 0.0s │ in │ { │ "filePath": "/home/mac/Code/dashboard/app/main.py" │ } │ out │ /home/mac/Code/dashboard/app/main.pyfile │ 1: import asyncio │ 2: import socket │ 3: from contextlib import asynccontextmanager │ 4: │ 5: from fastapi import FastAPI │ 6: from fastapi.responses import HTMLResponse │ 7: from fastapi.staticfiles import StaticFiles │ 8: │ 9: from app.config import get_settings │ 10: from app.plugins import ROUTERS as PLUGIN_ROUTERS │ 11: from app.render import BASE, render │ 12: from app.routers import disks, overview, plugins, processes, services │ 13: from app.routers import journal as journal_router │ 14: from app.sampling import sampler_loop │ 15: from app.state import HistoryStore │ 16: │ 17: │ 18: @asynccontextmanager │ 19: async def lifespan(app: FastAPI): │ 20: settings = get_settings() │ 21: app.state.settings = settings │ 22: app.state.store = HistoryStore(maxlen=settings.history_maxlen) │ 23: task = asyncio.create_task(sampler_loop(app.state.store, settings.sample_interval)) │ 24: yield │ 25: _ = task.cancel() │ 26: try: │ 27: await task │ 28: except asyncio.CancelledError: │ 29: pass │ 30: │ 31: │ 32: def create_app() -> FastAPI: │ 33: app = FastAPI(title="Dashboard", lifespan=lifespan) │ 34: app.mount("/static", StaticFiles(directory=BASE / "static"), name="static") │ 35: for r in (overview.router, disks.router, processes.router, journal_router.router, │ services.router, plugins.router): │ 36: app.include_router(r) │ 37: for r in PLUGIN_ROUTERS: │ 38: app.include_router(r) │ 39: │ 40: @app.get("/", include_in_schema=False) │ 41: async def index(): │ 42: return HTMLResponse(render("index.html", hostname=socket.gethostname())) │ 43: │ 44: return app │ 45: │ 46: │ 47: app = create_app() │ │ (End of file - total 47 lines) │ │ read /home/mac/Code/dashboard/app/config.py ok 0.0s │ in │ { │ "filePath": "/home/mac/Code/dashboard/app/config.py" │ } │ out │ /home/mac/Code/dashboard/app/config.pyfile │ 1: from functools import lru_cache │ 2: │ 3: from pydantic_settings import BaseSettings, SettingsConfigDict │ 4: │ 5: │ 6: class Settings(BaseSettings): │ 7: model_config = SettingsConfigDict(env_prefix="DASH_", env_file=".env", │ extra="ignore") │ 8: │ 9: host: str = "127.0.0.1" │ 10: port: int = 8501 │ 11: sample_interval: float = 2.0 │ 12: retention_minutes: int = 60 │ 13: chart_max_points: int = 200 │ 14: │ 15: llama_base_url: str = "http://127.0.0.1:8080" │ 16: llama_api_key: str = "" │ 17: llama_timeout: float = 4.0 │ 18: │ 19: @property │ 20: def history_maxlen(self) -> int: │ 21: return max(10, int(self.retention_minutes * 60 / self.sample_interval)) │ 22: │ 23: │ 24: @lru_cache │ 25: def get_settings() -> Settings: │ 26: return Settings() │ │ (End of file - total 26 lines) │ │ │ tokens 1618 in 89 out 16362 cached 0 written $0.0000 tool-calls │ 2026-08-30 20:58:25 • assistant • Qwen3.8-27B-Think @plan │ │ Now I have a good understanding of the plugin architecture. Let me check the output format of │ `systemd-inhibit --json=short --list` and think about how to implement sleep inhibition from a │ persistent process. │ │ Key design considerations: │ │ 1. **Displaying inhibitors**: Run `systemd-inhibit --json=short --list` (actually `--list` alone │ displays the list, and `--json=short` is for the inhibit command... let me think about it. │ Actually, `systemd-inhibit --list` lists active inhibitors. Let me verify: `systemd-inhibit` │ usage: │ - `systemd-inhibit COMMAND...` — runs a command with an inhibitor lock │ - `systemd-inhibit --list` — lists active inhibitor locks │ - `--json=pretty|short|offline` — output as JSON │ │ So `systemd-inhibit --json=short --list` should work. Each entry in the JSON array has fields │ like: │ ```json │ { │ "who": "user name", │ "what": "sleep", │ "why": "reason", │ "mode": "block" │ } │ ``` │ Actually, the JSON fields for inhibitors listed via systemd-inhibit --json=short --list are: │ `who`, `what`, `why`, `mode`. Let me recall from the systemd docs (INHIBITOR LOCKS): │ `systemd-inhibit --list` shows WHO, WHAT, WHY, MODE. JSON output has those keys. │ │ 2. **Creating a persistent inhibitor**: `systemd-inhibit` in COMMAND mode spawns the command and │ holds the lock while it runs. To keep the lock for the lifetime of the dashboard process, the │ natural approach is: │ - Option A: `asyncio.create_subprocess_exec("systemd-inhibit", "--what=sleep", │ "--who=Dashboard", "--why=...", "--mode=block", "sleep", "infinity")` — hmm, that's hacky but │ works: run `systemd-inhibit ... -- shell -c 'sleep infinity'` or `sleep 2147483647`. │ - Option B: Use `systemd-inhibit` in "list" mode... no, that's not it. │ - Option C: Use `loginctl inhibit` — deprecated. │ - Option D: Use `busctl`/D-Bus: `org.freedesktop.login1.Manager.Inhibit` — the proper API, │ holding an fd. Requires a D-Bus session/system bus client. Python stdlib has no D-Bus; could │ shell out to │ … [15945 more chars] │ │ bash systemd-inhibit --json=short --list; echo "rc=$?" ok 0.0s │ in │ { │ "command": "systemd-inhibit --json=short --list; echo \"rc=$?\"" │ } │ out │ [{"who":"NetworkManager","uid":0,"user":"root","pid":689,"comm":"NetworkManager","what":"sle │ ep","why":"NetworkManager needs to turn off networks","mode":"delay"},{"who":"Realtime │ Kit","uid":0,"user":"root","pid":1254,"comm":"rtkit-daemon","what":"sleep","why":"Demote │ realtime scheduling and stop │ canary.","mode":"delay"},{"who":"UPower","uid":0,"user":"root","pid":1072,"comm":"upowerd"," │ what":"sleep","why":"Pause device │ polling","mode":"delay"},{"who":"PowerDevil","uid":1001,"user":"mac","pid":1392,"comm":"org_ │ kde_powerde","what":"handle-power-key:handle-suspend-key:handle-hibernate-key:handle-lid-swi │ tch","why":"KDE handles power │ events","mode":"block"},{"who":"compositor","uid":1001,"user":"mac","pid":1208,"comm":"kwin_ │ wayland","what":"sleep","why":"Ensuring that the screen gets locked before going to │ sleep","mode":"delay"}] │ rc=0 │ bash timeout 1 sleep infinity; echo "rc=$?"; systemd-inhibit --help 2>&1 | grep -… ok 0.0s │ in │ { │ "command": "timeout 1 sleep infinity; echo \"rc=$?\"; systemd-inhibit --help 2>&1 | grep │ -E \"json|mode|what|who|why|list\" " │ } │ out │ rc=124 │ --json=FORMAT Generate JSON output (pretty, short, or off) │ --what=WHAT Operations to inhibit, colon separated list (shutdown, │ --who=STRING A descriptive string who is inhibiting │ --why=STRING A descriptive string why is being inhibited │ --mode=MODE One of block, block-weak, or delay │ --list List active inhibitors │ read /home/mac/Code/dashboard/pyproject.toml ok 0.0s │ in │ { │ "filePath": "/home/mac/Code/dashboard/pyproject.toml" │ } │ out │ /home/mac/Code/dashboard/pyproject.tomlfile │ 1: [project] │ 2: name = "dashboard" │ 3: version = "0.1.0" │ 4: description = "Computer dashboard and combined task manager (FastAPI + htmx)" │ 5: license = "Unlicense" │ 6: license-files = ["LICENSE"] │ 7: requires-python = ">=3.12" │ 8: dependencies = [ │ 9: "fastapi>=0.141.1", │ 10: "httpx>=0.28.1", │ 11: "jinja2>=3.1.6", │ 12: "psutil>=7.2.2", │ 13: "pydantic-settings>=2.15.0", │ 14: "python-multipart>=0.0.32", │ 15: "uvicorn[standard]>=0.52.4", │ 16: ] │ 17: │ 18: [tool.uv] │ 19: package = false │ 20: │ 21: [tool.basedpyright] │ 22: reportExplicitAny = false │ 23: reportAny = false │ │ (End of file - total 23 lines) │ │ │ tokens 862 in 4612 out 18068 cached 0 written $0.0000 tool-calls │ 2026-08-30 21:00:30 • assistant • Qwen3.8-27B-Think @plan │ │ The JSON output has rich fields: `who`, `uid`, `user`, `pid`, `comm`, `what`, `why`, `mode`. And │ since `what` can be a colon-separated list like `handle-power-key:handle-suspend-key:...`, we │ need to split on `:` when checking. Also, the `mode` here can be `block`, `delay`, or │ `block-weak` (the newer systemd also has `block-weak` — treat it as block-equivalent? block-weak │ is for things like… it's a mode where the inhibitor is ignored if it's the only one? Let me │ recall: `block-weak` — "the inhibitor is only effective if there are other active inhibitors │ too"? Actually, according to the man page: block-weak: "the lock is only applied if there are │ other locks of the same type"? I'll treat block-weak as block for our determination (or display │ it as-is and only count `block`… hmm). Let's not overthink it; display the mode as-is, and treat │ `block` and `block-weak` as blocking. │ │ Also, `sleep infinity` works (rc=124 = force-killed by timeout, as expected). │ │ Another interesting point: the `pid` and `comm` fields in the list output — very useful for │ display (and for reaping old locks from our marker: we can filter the list by who, get the pid, │ and kill that pid!). This makes startup cleanup easy: parse the list, find entries where who == │ our marker, and kill(pid). No pgrep needed. │ │ Now, let's check the CSS classes available in the templates and match the UI style. I'll look at │ main.css and index.html. │ │ read /home/mac/Code/dashboard/templates/index.html ok 0.0s │ in │ { │ "filePath": "/home/mac/Code/dashboard/templates/index.html" │ } │ out │ /home/mac/Code/dashboard/templates/index.htmlfile │ 1: │ 2: │ 3: │ 4: │ 5: │ 6: {{ hostname }} │ 7: │ 8: │ 9: │ 10: │ 11: │ 12:
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