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punktfunk/scripts/host.env.example
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enricobuehler 468a60c88a docs(display-management): Stage 8 consolidation — docs page, README, CLAUDE.md, host.env
Bring the user-facing + project docs in line with the shipped, on-glass-validated state (Stages
0-5 §6A + keep-alive hardening + gaming-rig) ahead of a merge decision:

- docs-site/virtual-displays.md: drop the now-false "stored but not yet enforced / following
  release" caveats — conflict handling, per-client identity + KDE scaling round-trip, and §6A
  multi-monitor layout are all live; gaming-rig/forever ships (freed via Release); document the
  reconnect-always-resumes + deliberate-quit-skips-linger behavior and the PUNKTFUNK_IDLE_TIMEOUT_MS
  knob. KDE persistent scaling →  today (validated); Windows primary → shipped; Sway exclusive
  stays "following release".
- README: a "displays you configure, not just create" differentiator bullet.
- CLAUDE.md: the display-management invariant now reflects Stages 0-5 shipped (all axes enforced,
  forever/Pinned, hardened reconnect) instead of "Stage 0 shipped".
- host.env.example: document PUNKTFUNK_IDLE_TIMEOUT_MS + that display policy lives in the console.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-07-05 17:50:32 +00:00

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# punktfunk host configuration (~/.config/punktfunk/host.env) — consumed by punktfunk-host.service.
#
# The compositor + input backend are AUTO-DETECTED per connect from the live session (the host
# probes which compositor is actually running and retargets WAYLAND_DISPLAY/XDG_CURRENT_DESKTOP/
# DBUS at it), so a box that flips between Steam Gaming Mode and a KDE/GNOME desktop is followed
# automatically. The blocks below are OPTIONAL OVERRIDES — uncomment one only to force a backend
# (this also skips the per-connect env retargeting). The anchors XDG_RUNTIME_DIR + DBUS stay.
# Session / compositor environment (headless KWin example).
XDG_RUNTIME_DIR=/run/user/1000
DBUS_SESSION_BUS_ADDRESS=unix:path=/run/user/1000/bus
WAYLAND_DISPLAY=wayland-kde
XDG_CURRENT_DESKTOP=KDE
# Video source: `virtual` creates a per-client virtual output at the client's exact
# resolution+refresh (the flagship mode); `portal` captures an existing monitor.
PUNKTFUNK_VIDEO_SOURCE=virtual
# GPU zero-copy capture (EGL/Vulkan → CUDA → NVENC). Falls back to CPU automatically.
PUNKTFUNK_ZEROCOPY=1
# --- Bazzite / SteamOS-like host: host-managed Steam-Deck-UI session -----------------------
# The host LAUNCHES gamescope-session-plus headless AT THE CLIENT'S mode (so games see the
# client's exact resolution + refresh, not the box's TV), and relaunches it when the mode
# changes. Requires the headless-appliance prereqs (linger + multi-user.target — see
# punktfunk-steam-session.service header) and NO physical gaming session running.
#PUNKTFUNK_COMPOSITOR=gamescope
#PUNKTFUNK_GAMESCOPE_SESSION=steam # host owns a gamescope-session-plus session at the client mode
#PUNKTFUNK_INPUT_BACKEND=gamescope
# Mutually exclusive with the above: ATTACH to a gamescope session something ELSE owns (fixed mode):
#PUNKTFUNK_GAMESCOPE_NODE=auto # discover + capture a running gamescope (do NOT combine with SESSION)
# --- GNOME / Mutter host (e.g. an Ubuntu desktop) -----------------------------------------
# Attach to a running GNOME (Wayland) session — its default socket is wayland-0, not wayland-kde.
# Mutter creates the per-client virtual output via its `RecordVirtual` D-Bus API (a virtual
# monitor alongside any real one), and input goes through the RemoteDesktop portal (libei). On a
# real desktop the host runs as the logged-in user; headless GNOME also works (gnome-shell
# --headless). Needs GNOME ≥ 48 for the zero-copy RecordVirtual path.
#WAYLAND_DISPLAY=wayland-0
#XDG_CURRENT_DESKTOP=GNOME
#PUNKTFUNK_COMPOSITOR=mutter
#PUNKTFUNK_VIDEO_SOURCE=virtual
#PUNKTFUNK_INPUT_BACKEND=libei
# Optional overrides (apps.json is the primary mechanism for per-app settings):
#PUNKTFUNK_COMPOSITOR=kwin # kwin | mutter | gamescope | wlroots
#PUNKTFUNK_GAMESCOPE_APP=vkcube # nested command for ad-hoc bare-gamescope sessions
#PUNKTFUNK_INPUT_BACKEND=libei # wlr | libei | gamescope | uinput
#PUNKTFUNK_FEC_PCT=20 # video FEC overhead percent
#PUNKTFUNK_PERF=1 # per-stage timing logs
# Display-management policy (keep-alive · topology · conflict · identity · layout · max) is set in the
# web console (Host → Virtual displays) → ~/.config/punktfunk/display-settings.json, NOT here; a
# settings file supersedes the legacy PUNKTFUNK_MONITOR_LINGER_MS / _NO_ISOLATE / *_VIRTUAL_PRIMARY
# knobs. One transport knob has no console equivalent:
#PUNKTFUNK_IDLE_TIMEOUT_MS=8000 # disconnect-detection latency: how long before a DROPPED client is
# declared gone (a kept display then starts its linger, or frees).
# Lower (e.g. 3000) to reclaim kept displays sooner after an
# ungraceful drop; clamped ≥1s, keep-alive ping scales with it so a
# live session never false-disconnects. A deliberate quit is instant.
# Full-chroma 4:4:4 (HEVC Range Extensions) — sharper text/desktop, no chroma loss. Honored only on
# the punktfunk/1 native path when the client advertises 4:4:4 AND the GPU supports it (probed; else
# the session stays 4:2:0). HEVC-only; independent of 10-bit. NVENC (NVIDIA) is the validated path;
# VAAPI/AMF/QSV decline (4:2:0). GameStream/Moonlight always stays 4:2:0.
#PUNKTFUNK_444=1
#PUNKTFUNK_10BIT=1 # HEVC Main10 / HDR (when the client advertises 10-bit)
#RUST_LOG=info
# Management API bearer token. The mgmt API is HTTPS + token-authenticated ALWAYS (even on
# loopback); if unset it is auto-generated + persisted to ~/.config/punktfunk/mgmt-token (which the
# bundled web console sources). Set here only to pin a specific token.
#PUNKTFUNK_MGMT_TOKEN=