- plugins/tmux-panes.ts: opencode plugin that hooks into session.created/ session.deleted events to spawn a tmux pane per subagent running 'opencode attach', giving live visual TUI for each background agent - opencode.jsonc: load the local plugin alongside @tarquinen/opencode-dcp - skills/tmux-session/SKILL.md: teach agents to manage persistent tmux sessions (dev servers, watchers, worktree windows) with oc- naming - c.fish / cc.fish: auto-start a tmux session when invoked outside tmux so the visual panes plugin can always activate
73 lines
2.0 KiB
TypeScript
73 lines
2.0 KiB
TypeScript
import type { Plugin } from "@opencode-ai/plugin"
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import { spawn } from "bun"
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/**
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* tmux-panes plugin
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*
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* When opencode spawns a background subagent, this plugin automatically opens
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* a new tmux pane showing that subagent's live TUI via `opencode attach`.
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* The pane closes when the subagent session ends.
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*
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* Only activates when running inside a tmux session (TMUX env var is set).
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*/
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const isInsideTmux = () => Boolean(process.env.TMUX)
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const getCurrentPaneId = () => process.env.TMUX_PANE
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const plugin: Plugin = async (ctx) => {
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if (!isInsideTmux()) return {}
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const sessions = new Map<string, string>() // sessionId → tmux paneId
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const sourcePaneId = getCurrentPaneId()
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const serverUrl = ctx.serverUrl.toString()
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return {
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event: async ({ event }) => {
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// Spawn a new pane when a subagent session is created
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if (event.type === "session.created") {
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const info = (event as any).properties?.info
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// parentID presence distinguishes subagents from the root session
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if (!info?.id || !info?.parentID) return
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const sessionId: string = info.id
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if (sessions.has(sessionId)) return
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const cmd = `opencode attach ${serverUrl} --session ${sessionId}`
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const proc = spawn(
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[
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"tmux",
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"split-window",
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"-h", // horizontal split
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"-d", // don't focus the new pane
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"-P",
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"-F",
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"#{pane_id}", // print the new pane's ID
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...(sourcePaneId ? ["-t", sourcePaneId] : []),
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cmd,
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],
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{ stdout: "pipe", stderr: "pipe" },
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)
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const paneId = (await new Response(proc.stdout).text()).trim()
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if ((await proc.exited) === 0 && paneId) {
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sessions.set(sessionId, paneId)
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}
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}
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// Kill the pane when the subagent session ends
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if (event.type === "session.deleted") {
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const info = (event as any).properties?.info
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const paneId = sessions.get(info?.id)
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if (paneId) {
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spawn(["tmux", "kill-pane", "-t", paneId], {
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stdout: "ignore",
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stderr: "ignore",
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})
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sessions.delete(info.id)
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}
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}
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},
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}
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}
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export default plugin
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