mirror of
https://github.com/harivansh-afk/nix.git
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588d8b8d6a
* pi-agent stack * fix: hardcode pi binary path, set XDG env for npm npm prefix discovery fails in systemd and activation contexts because NPM_CONFIG_USERCONFIG and XDG_DATA_HOME are not set. Hardcode the known path ~/.local/share/npm/bin/pi instead.
74 lines
2.2 KiB
Nix
74 lines
2.2 KiB
Nix
{
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pkgs,
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username,
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...
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}:
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let
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piAgentEnvFile = "/var/lib/pi-agent/pi-agent.env";
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piAgentEnvCheck = pkgs.writeShellScript "pi-agent-env-check" ''
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[ -f "${piAgentEnvFile}" ]
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'';
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piBin = "/home/${username}/.local/share/npm/bin/pi";
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# Wrapper that exec's pi inside tmux's foreground process so systemd
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# tracks the actual PID. When pi dies, tmux exits, systemd sees it
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# and triggers Restart=on-failure.
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piAgentStart = pkgs.writeShellScript "start-pi-agent" ''
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if [ ! -x "${piBin}" ]; then
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echo "pi binary not found at ${piBin}" >&2
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exit 1
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fi
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# tmux runs in the foreground (-D) so systemd tracks this process.
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# The inner shell exec's pi so the tmux pane PID *is* the pi PID.
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exec ${pkgs.tmux}/bin/tmux new-session -D -s pi-agent \
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"exec ${piBin} --chat-bridge"
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'';
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in
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{
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# Ensure state directory and env file have correct permissions.
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systemd.tmpfiles.rules = [
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"d /var/lib/pi-agent 0750 ${username} users -"
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"z ${piAgentEnvFile} 0600 ${username} users -"
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];
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# Pi agent running 24/7 in a foreground tmux session.
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# Extensions (pi-channels, pi-schedule-prompt, pi-subagents) load
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# inside Pi's process and handle Telegram bridging, scheduled tasks,
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# and background subagent delegation.
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#
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# The --chat-bridge flag auto-enables the Telegram bridge on startup.
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# Telegram bot token lives in ~/.pi/agent/settings.json (see pi-channels docs).
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# ANTHROPIC_API_KEY comes from the env file.
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#
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# tmux session name: pi-agent
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# Attach for debugging: tmux attach -t pi-agent
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systemd.services.pi-agent = {
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description = "Pi Coding Agent (24/7)";
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after = [ "network-online.target" ];
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wants = [ "network-online.target" ];
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wantedBy = [ "multi-user.target" ];
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path = [
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pkgs.nodejs_22
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pkgs.git
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pkgs.tmux
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pkgs.coreutils
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];
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environment = {
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HOME = "/home/${username}";
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NODE_NO_WARNINGS = "1";
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};
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serviceConfig = {
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Type = "simple";
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User = username;
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Group = "users";
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WorkingDirectory = "/home/${username}";
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ExecCondition = piAgentEnvCheck;
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EnvironmentFile = piAgentEnvFile;
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ExecStart = piAgentStart;
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Restart = "on-failure";
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RestartSec = 10;
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};
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};
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}
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