feat: remove agent metadata for incus-nixos

feat(bpmct/templates): add incus-vm and incus-nixos templates (#910 )
## Description Adds two new templates under `registry/bpmct` for running workspaces on [Incus](https://linuxcontainers.org/incus/) (the open-source LXD fork). ### `incus-vm` Provisions a full KVM virtual machine on a remote Incus host using cloud-init. This is a VM variant of the existing `coder/incus` system container template. Key differences from `coder/incus`: - Launches a **virtual machine** (`type = "virtual-machine"`) rather than a system container - Supports **remote Incus hosts** via `incus remote add` — the Coder provisioner does not need to be co-located with the Incus host - `arch` parameter (`amd64` / `arm64`) threads through the agent, image fetch, and Incus architecture hint — so the same template works on both x86-64 and aarch64 hosts - Token rotation handled on every workspace start via a `null_resource` provisioner (necessary since cloud-init only runs once on first boot) ### `incus-nixos` Provisions a NixOS virtual machine on a remote Incus host. NixOS requires a different provisioning approach from the cloud-init-based `incus-vm` template. Key design points: - Uses Incus's official NixOS images (`nixos/<channel>`) - Provisions entirely via `nixos-rebuild switch` — no cloud-init - Writes `/etc/nixos/coder.nix` and `/etc/nixos/configuration.nix` via `incus exec` on first boot - Idempotent: subsequent starts skip the rebuild and just refresh the agent token - `nixos_channel` is a Terraform `variable` (admin sets at push time); no user-facing image picker since the whole point of the template is NixOS ## Type of Change - [ ] New module - [x] New template - [ ] Bug fix - [ ] Feature/enhancement - [ ] Documentation - [ ] Other ## Template Information **Paths:** - `registry/bpmct/templates/incus-vm` - `registry/bpmct/templates/incus-nixos` ## Testing & Validation - [x] Tests pass (`bun test`) - [x] Code formatted (`bun fmt`) - [x] Changes tested locally (both templates deployed and workspaces verified healthy on aarch64 Raspberry Pi provisioners) ## Related Issues None ## Video https://www.loom.com/share/f009972a51af452dbbe9eda9f9760d3e
2026-06-05 05:58:14 +00:00 · 2026-06-04 09:53:49 -05:00 · 2026-06-04 09:44:37 -05:00 · 2026-06-02 13:19:02 +05:00
6 changed files with 764 additions and 2 deletions
@@ -93,7 +93,7 @@ jobs:
      - name: Validate formatting
        run: bun fmt:ci
      - name: Check for typos
-        uses: crate-ci/typos@7b04f660f4ee4f048d18fd341887cf28dfbedfe2 # v1.46.3
+        uses: crate-ci/typos@f8a58b6b53f2279f71eb605f03a4ae4d10608f45 # v1.47.0
        with:
          config: .github/typos.toml
  validate-readme-files:
@@ -8,4 +8,4 @@ status: community

 # Ben Potter

-Tinkerer and Product Manager at Coder. Building modules to make dev environments better.
+Tinkerer and Product Manager at Coder.
@@ -0,0 +1,75 @@
+---
+display_name: Incus NixOS VM
+description: Run a NixOS virtual machine on a local Incus host
+icon: ../../../../.icons/lxc.svg
+verified: false
+tags: [local, incus, vm, nixos]
+---
+
+# Incus NixOS VM
+
+Provision a NixOS KVM virtual machine on an [Incus](https://linuxcontainers.org/incus/) host. The image is pulled from [images.linuxcontainers.org](https://images.linuxcontainers.org) and cached on the host.
+
+NixOS does not support cloud-init. This template uses `nixos-rebuild switch` via `incus exec` to configure the workspace user and start the Coder agent. The rebuild only runs on first boot; subsequent starts rotate the agent token and restart the service directly.
+
+## Prerequisites
+
+### 1. Install Incus on the VM host
+
+Follow the [Incus installation guide](https://linuxcontainers.org/incus/docs/main/installing/) for your distro. On Debian/Ubuntu:
+
+```sh
+sudo apt-get install incus
+sudo incus admin init
+```
+
+### 2. Run the Coder provisioner on the same machine
+
+This template uses the local Incus socket, so the Coder provisioner must run on the same machine as Incus. See [provisioner daemons](https://coder.com/docs/admin/provisioners).
+
+### 3. Ensure the host has KVM
+
+```sh
+ls /dev/kvm
+```
+
+If the device is missing, enable virtualisation in your BIOS/UEFI or, in a nested setup, pass through the `kvm` module.
+
+### 4. Create a storage pool (if needed)
+
+```sh
+incus storage create default btrfs
+incus storage list
+```
+
+### 5. Push the template
+
+```sh
+# amd64 host:
+coder templates push incus-nixos --directory . --variable arch=amd64
+
+# arm64 host:
+coder templates push incus-nixos --directory . --variable arch=arm64
+```
+
+The `storage_pool` variable defaults to `default`. Override if needed:
+
+```sh
+coder templates push incus-nixos --directory . \
+  --variable arch=arm64 \
+  --variable storage_pool=fast-nvme
+```
+
+The `nixos_channel` variable controls which NixOS channel is used for `nixos-rebuild`. It must match the image version (default: `nixos-25.11`).
+
+## Usage
+
+1. Create a workspace from this template and choose CPU, memory, and disk.
+2. Connect via `coder ssh <workspace>` or use VS Code in the browser via the [VS Code extension](https://coder.com/docs/user-guides/workspace-access/vscode).
+3. Install packages declaratively by editing `/etc/nixos/coder.nix` and running `sudo nixos-rebuild switch`.
+
+## Notes
+
+- `code-server` is not installed by this template. The Coder agent is started as a plain systemd service. Install editors via nix packages in `coder.nix`.
+- The first workspace start takes several minutes while `nixos-rebuild switch` runs. Subsequent starts are fast.
+- Advanced Incus remotes (targeting a separate host over the network) are not supported by this template. See the `incus-vm` template for guidance on adding remote support.
@@ -0,0 +1,287 @@
+terraform {
+  required_providers {
+    coder = {
+      source  = "coder/coder"
+      version = ">= 2.4.0"
+    }
+    incus = {
+      source  = "lxc/incus"
+      version = "~> 1.0"
+    }
+    null = {
+      source  = "hashicorp/null"
+      version = "~> 3.0"
+    }
+  }
+}
+
+provider "incus" {}
+
+variable "arch" {
+  description = "CPU architecture of the VM host. Set this when pushing the template to match your Incus host. Valid values: amd64, arm64."
+  type        = string
+  default     = "amd64"
+  validation {
+    condition     = contains(["amd64", "arm64"], var.arch)
+    error_message = "arch must be amd64 or arm64."
+  }
+}
+
+variable "storage_pool" {
+  description = "Incus storage pool for the root disk. Run `incus storage list` on the host to see available pools."
+  type        = string
+  default     = "default"
+}
+
+variable "nixos_channel" {
+  description = "NixOS channel to use for nixos-rebuild. Must match the image version (e.g. nixos-25.11)."
+  type        = string
+  default     = "nixos-25.11"
+}
+
+data "coder_workspace" "me" {}
+data "coder_workspace_owner" "me" {}
+
+data "coder_parameter" "cpu" {
+  name         = "cpu"
+  display_name = "CPU"
+  description  = "Number of vCPUs."
+  type         = "number"
+  default      = 2
+  icon         = "https://raw.githubusercontent.com/matifali/logos/main/cpu-3.svg"
+  mutable      = true
+  order        = 1
+  validation {
+    min = 1
+    max = 16
+  }
+}
+
+data "coder_parameter" "memory" {
+  name         = "memory"
+  display_name = "Memory (GB)"
+  type         = "number"
+  default      = 4
+  icon         = "/icon/memory.svg"
+  mutable      = true
+  order        = 2
+  validation {
+    min = 1
+    max = 64
+  }
+}
+
+data "coder_parameter" "disk" {
+  name         = "disk"
+  display_name = "Disk (GB)"
+  type         = "number"
+  default      = 30
+  icon         = "/icon/database.svg"
+  mutable      = true
+  order        = 3
+  validation {
+    min = 10
+    max = 500
+  }
+}
+
+locals {
+  workspace_user    = lower(data.coder_workspace_owner.me.name)
+  agent_token       = data.coder_workspace.me.start_count == 1 ? coder_agent.main[0].token : ""
+  agent_init_script = data.coder_workspace.me.start_count == 1 ? coder_agent.main[0].init_script : ""
+
+  # NixOS images on images.linuxcontainers.org use "nixos/<ver>" with no arch suffix.
+  # The channel version (e.g. "25.11") is extracted from var.nixos_channel.
+  nixos_version = replace(var.nixos_channel, "nixos-", "")
+  image_alias   = "nixos/${local.nixos_version}"
+
+  # PATH required for incus exec commands on NixOS VMs. The Nix store is not
+  # on the default system PATH until after the first nixos-rebuild switch.
+  nix_path = "/nix/var/nix/profiles/system/sw/bin:/run/current-system/sw/bin:/nix/var/nix/profiles/default/bin:/run/wrappers/bin"
+}
+
+resource "coder_agent" "main" {
+  count = data.coder_workspace.me.start_count
+  arch  = var.arch
+  os    = "linux"
+}
+
+resource "incus_image" "nixos" {
+  source_image = {
+    remote       = "images"
+    name         = local.image_alias
+    type         = "virtual-machine"
+    architecture = var.arch == "amd64" ? "x86_64" : "aarch64"
+  }
+}
+
+resource "incus_instance" "dev" {
+  running = data.coder_workspace.me.start_count == 1
+  name    = "coder-${lower(data.coder_workspace_owner.me.name)}-${lower(data.coder_workspace.me.name)}"
+  image   = incus_image.nixos.fingerprint
+  type    = "virtual-machine"
+
+  config = {
+    "limits.cpu"             = tostring(data.coder_parameter.cpu.value)
+    "limits.memory"          = "${data.coder_parameter.memory.value}GiB"
+    "security.secureboot"    = false
+    "boot.autostart"         = data.coder_workspace.me.start_count == 1
+    "user.coder-agent-token" = local.agent_token
+  }
+
+  device {
+    name = "root"
+    type = "disk"
+    properties = {
+      path = "/"
+      pool = var.storage_pool
+      size = "${data.coder_parameter.disk.value}GiB"
+    }
+  }
+
+  lifecycle {
+    ignore_changes = [
+      config["user.coder-agent-token"],
+      image,
+    ]
+  }
+}
+
+# NixOS does not support cloud-init. Provisioning steps:
+#   1. Wait for the incus-agent to be ready (virtio serial channel).
+#   2. Push the Coder agent binary (/opt/coder/init) and token env file.
+#   3. On first boot: write coder.nix and an updated configuration.nix
+#      that imports the Incus VM module, then run nixos-rebuild switch.
+#      Leave a marker so subsequent starts skip the rebuild.
+#   4. On subsequent starts: overwrite init.env + restart coder-agent.
+
+resource "null_resource" "provision" {
+  count = data.coder_workspace.me.start_count
+
+  triggers = {
+    agent_token = local.agent_token
+    instance    = incus_instance.dev.name
+  }
+
+  depends_on = [incus_instance.dev]
+
+  provisioner "local-exec" {
+    command = <<-EOT
+      set -e
+      INSTANCE="${incus_instance.dev.name}"
+      WUSER="${local.workspace_user}"
+      NIX_PATH="${local.nix_path}"
+      CHANNEL="${var.nixos_channel}"
+
+      echo "Waiting for incus-agent..."
+      for i in $(seq 1 60); do
+        incus exec "$INSTANCE" -- true 2>/dev/null && break
+        echo "  attempt $i/60..."
+        sleep 5
+      done
+
+      echo "Pushing Coder agent binary..."
+      TMPDIR=$(mktemp -d)
+      echo "${base64encode(local.agent_init_script)}" | base64 -d > "$TMPDIR/init"
+      chmod 755 "$TMPDIR/init"
+      incus exec "$INSTANCE" -- env PATH="$NIX_PATH" mkdir -p /opt/coder
+      incus file push "$TMPDIR/init" "$INSTANCE/opt/coder/init"
+      incus exec "$INSTANCE" -- env PATH="$NIX_PATH" chmod 755 /opt/coder/init
+      rm -rf "$TMPDIR"
+
+      printf 'CODER_AGENT_TOKEN=${local.agent_token}\nCODER_AGENT_URL=${data.coder_workspace.me.access_url}\n' \
+        | incus file push - "$INSTANCE/opt/coder/init.env" --mode 0600
+
+      # Fast path: already provisioned -- just rotate token and restart.
+      if incus exec "$INSTANCE" -- test -f /etc/nixos/.coder-provisioned 2>/dev/null; then
+        echo "Already provisioned; restarting coder-agent..."
+        incus exec "$INSTANCE" -- env PATH="$NIX_PATH" systemctl restart coder-agent.service
+        echo "Done."
+        exit 0
+      fi
+
+      # First boot: write NixOS config and rebuild.
+      echo "Writing /etc/nixos/coder.nix..."
+      cat <<'NIXEOF' | incus exec "$INSTANCE" -- env PATH="$NIX_PATH" bash -c 'cat > /etc/nixos/coder.nix'
+{ config, pkgs, lib, ... }:
+{
+  users.users."${local.workspace_user}" = {
+    isNormalUser = true;
+    uid          = 1000;
+    home         = "/home/${local.workspace_user}";
+    shell        = pkgs.bash;
+    extraGroups  = [ "wheel" ];
+  };
+  security.sudo.wheelNeedsPassword = false;
+  nix.settings.trusted-users = [ "root" "${local.workspace_user}" ];
+
+  systemd.services.coder-agent = {
+    description = "Coder Agent";
+    after       = [ "network-online.target" ];
+    wants       = [ "network-online.target" ];
+    wantedBy    = [ "multi-user.target" ];
+    serviceConfig = {
+      User             = "${local.workspace_user}";
+      EnvironmentFile  = "/opt/coder/init.env";
+      ExecStart        = "/opt/coder/init";
+      Environment      = "PATH=/run/current-system/sw/bin:/run/wrappers/bin:/usr/local/bin:/usr/bin:/bin";
+      Restart          = "always";
+      RestartSec       = 10;
+      TimeoutStopSec   = 90;
+      KillMode         = "process";
+      OOMScoreAdjust   = -900;
+      SyslogIdentifier = "coder-agent";
+    };
+  };
+}
+NIXEOF
+
+      echo "Writing /etc/nixos/configuration.nix..."
+      cat <<'NIXEOF' | incus exec "$INSTANCE" -- env PATH="$NIX_PATH" bash -c 'cat > /etc/nixos/configuration.nix'
+{ modulesPath, ... }:
+{
+  imports = [
+    "$${modulesPath}/virtualisation/incus-virtual-machine.nix"
+    ./incus.nix
+    ./coder.nix
+  ];
+
+  systemd.network = {
+    enable = true;
+    networks."50-enp5s0" = {
+      matchConfig.Name = "enp5s0";
+      networkConfig = {
+        DHCP = "ipv4";
+        IPv6AcceptRA = true;
+      };
+      linkConfig.RequiredForOnline = "routable";
+    };
+  };
+
+  system.stateVersion = "${local.nixos_version}";
+}
+NIXEOF
+
+      echo "Restoring nixos channel if needed..."
+      incus exec "$INSTANCE" -- env PATH="$NIX_PATH" HOME=/root bash -c "
+        if [ ! -e /nix/var/nix/profiles/per-user/root/channels/nixos ]; then
+          nix-channel --add https://channels.nixos.org/$CHANNEL nixos
+          nix-channel --update nixos
+        fi
+      "
+
+      echo "Running nixos-rebuild switch..."
+      incus exec "$INSTANCE" -- env PATH="$NIX_PATH" HOME=/root bash -c "
+        NIXOS_CH=\$(ls -d /nix/var/nix/profiles/per-user/root/channels/nixos 2>/dev/null || echo '')
+        nixos-rebuild switch -I nixpkgs=\"\$NIXOS_CH\" -I nixos-config=/etc/nixos/configuration.nix \
+          || { EC=\$?; [ \$EC -eq 4 ] || exit \$EC; }
+      "
+
+      incus exec "$INSTANCE" -- env PATH="$NIX_PATH" touch /etc/nixos/.coder-provisioned
+      incus exec "$INSTANCE" -- env PATH="$NIX_PATH" bash -c \
+        "mkdir -p /home/$WUSER && chown 1000:1000 /home/$WUSER"
+
+      echo "NixOS provisioning complete."
+    EOT
+  }
+}
@@ -0,0 +1,96 @@
+---
+display_name: Incus VM
+description: Run a full virtual machine on a local Incus host
+icon: ../../../../.icons/lxc.svg
+verified: false
+tags: [local, incus, vm, virtual-machine]
+---
+
+# Incus VM
+
+Provision a full KVM virtual machine on an [Incus](https://linuxcontainers.org/incus/) host. Unlike the system container template, this creates an isolated VM with its own kernel. Images are pulled from [images.linuxcontainers.org](https://images.linuxcontainers.org) and cached on the host.
+
+## Prerequisites
+
+### 1. Install Incus on the VM host
+
+Follow the [Incus installation guide](https://linuxcontainers.org/incus/docs/main/installing/) for your distro. On Debian/Ubuntu:
+
+```sh
+sudo apt-get install incus
+sudo incus admin init
+```
+
+Verify it's working:
+
+```sh
+incus list
+```
+
+### 2. Run the Coder provisioner on the same machine
+
+This template uses Incus via the local Unix socket, so the Coder provisioner (or `coderd` itself) must run on the same machine as Incus. The simplest setup is a [provisioner daemon](https://coder.com/docs/admin/provisioners) running directly on the Incus host.
+
+### 3. Set the architecture when pushing the template
+
+The `arch` variable must match your Incus host's CPU architecture. Pass it when pushing:
+
+```sh
+# For amd64 (x86-64) hosts:
+coder templates push incus-vm --directory . --variable arch=amd64
+
+# For arm64 (aarch64) hosts:
+coder templates push incus-vm --directory . --variable arch=arm64
+```
+
+### 4. Ensure the VM host has KVM
+
+VMs require hardware virtualisation. Check on the host:
+
+```sh
+ls /dev/kvm
+```
+
+If the device is missing, enable virtualisation in your BIOS/UEFI or, in a nested setup, pass through the `kvm` module.
+
+### 5. Create a storage pool (if needed)
+
+The template uses an Incus storage pool to back the VM root disk. If you don't already have one:
+
+```sh
+incus storage create default btrfs
+```
+
+List existing pools:
+
+```sh
+incus storage list
+```
+
+The pool name defaults to `default` and can be overridden when pushing the template with `--variable storage_pool=<name>`.
+
+## Usage
+
+1. Push this template to your Coder deployment:
+
+   ```sh
+   coder templates push incus-vm --directory . --variable arch=amd64
+   ```
+
+2. Create a workspace and select an image and resource sizes.
+
+3. Connect via `coder ssh <workspace>` or open VS Code in the browser.
+
+## Advanced: using a remote Incus host
+
+By default this template connects to the local Incus socket. If you want the provisioner to target a separate Incus host over the network, add a `remote` parameter and use `incus remote add` to register the host on the provisioner machine:
+
+```sh
+# On the Incus host — generate a trust token:
+incus config trust add coder-provisioner
+
+# On the provisioner — add the remote:
+incus remote add my-server https://<host-ip>:8443 --token <paste-token>
+```
+
+Then update `main.tf` to accept a `remote` parameter and pass it to the `incus_image` and `incus_instance` resources. See the [Incus remote docs](https://linuxcontainers.org/incus/docs/main/remotes/) for details.
@@ -0,0 +1,304 @@
+terraform {
+  required_providers {
+    coder = {
+      source  = "coder/coder"
+      version = ">= 2.4.0"
+    }
+    incus = {
+      source  = "lxc/incus"
+      version = "~> 1.0"
+    }
+    null = {
+      source  = "hashicorp/null"
+      version = "~> 3.0"
+    }
+  }
+}
+
+provider "incus" {}
+
+variable "arch" {
+  description = "CPU architecture of the VM host. Set this when pushing the template to match your Incus host. Valid values: amd64, arm64."
+  type        = string
+  default     = "amd64"
+  validation {
+    condition     = contains(["amd64", "arm64"], var.arch)
+    error_message = "arch must be amd64 or arm64."
+  }
+}
+
+variable "storage_pool" {
+  description = "Incus storage pool for the root disk. Run `incus storage list` on the host to see available pools."
+  type        = string
+  default     = "default"
+}
+
+data "coder_workspace" "me" {}
+data "coder_workspace_owner" "me" {}
+
+data "coder_parameter" "image" {
+  name         = "image"
+  display_name = "Image"
+  description  = "Base image name from images.linuxcontainers.org (e.g. `ubuntu/noble/cloud`). The template architecture is appended automatically."
+  type         = "string"
+  default      = "ubuntu/noble/cloud"
+  icon         = "/icon/image.svg"
+  mutable      = true
+  order        = 1
+
+  option {
+    name  = "Ubuntu 24.04 LTS (Noble)"
+    value = "ubuntu/noble/cloud"
+    icon  = "/icon/ubuntu.svg"
+  }
+
+  option {
+    name  = "Ubuntu 22.04 LTS (Jammy)"
+    value = "ubuntu/jammy/cloud"
+    icon  = "/icon/ubuntu.svg"
+  }
+
+  option {
+    name  = "Debian 12 (Bookworm)"
+    value = "debian/12/cloud"
+    icon  = "/icon/debian.svg"
+  }
+}
+
+data "coder_parameter" "cpu" {
+  name         = "cpu"
+  display_name = "CPU"
+  description  = "Number of vCPUs."
+  type         = "number"
+  default      = 2
+  icon         = "https://raw.githubusercontent.com/matifali/logos/main/cpu-3.svg"
+  mutable      = true
+  order        = 2
+  validation {
+    min = 1
+    max = 16
+  }
+}
+
+data "coder_parameter" "memory" {
+  name         = "memory"
+  display_name = "Memory (GB)"
+  type         = "number"
+  default      = 4
+  icon         = "/icon/memory.svg"
+  mutable      = true
+  order        = 3
+  validation {
+    min = 1
+    max = 64
+  }
+}
+
+data "coder_parameter" "disk" {
+  name         = "disk"
+  display_name = "Disk (GB)"
+  type         = "number"
+  default      = 30
+  icon         = "/icon/database.svg"
+  mutable      = true
+  order        = 4
+  validation {
+    min = 10
+    max = 500
+  }
+}
+
+resource "coder_agent" "main" {
+  count = data.coder_workspace.me.start_count
+  arch  = var.arch
+  os    = "linux"
+
+  metadata {
+    display_name = "CPU Usage"
+    key          = "0_cpu_usage"
+    script       = "coder stat cpu"
+    interval     = 10
+    timeout      = 1
+  }
+
+  metadata {
+    display_name = "RAM Usage"
+    key          = "1_ram_usage"
+    script       = "coder stat mem"
+    interval     = 10
+    timeout      = 1
+  }
+
+  metadata {
+    display_name = "Disk"
+    key          = "2_disk"
+    script       = "coder stat disk --path /"
+    interval     = 60
+    timeout      = 1
+  }
+}
+
+module "code-server" {
+  count    = data.coder_workspace.me.start_count
+  source   = "registry.coder.com/coder/code-server/coder"
+  version  = "~> 1.0"
+  agent_id = coder_agent.main[0].id
+}
+
+resource "incus_image" "image" {
+  source_image = {
+    remote       = "images"
+    name         = "${data.coder_parameter.image.value}/${var.arch}"
+    type         = "virtual-machine"
+    architecture = var.arch == "amd64" ? "x86_64" : "aarch64"
+  }
+}
+
+resource "incus_instance" "dev" {
+  running = data.coder_workspace.me.start_count == 1
+  name    = "coder-${lower(data.coder_workspace_owner.me.name)}-${lower(data.coder_workspace.me.name)}"
+  image   = incus_image.image.fingerprint
+  type    = "virtual-machine"
+
+  config = {
+    "limits.cpu"             = tostring(data.coder_parameter.cpu.value)
+    "limits.memory"          = "${data.coder_parameter.memory.value}GiB"
+    "security.secureboot"    = false
+    "boot.autostart"         = data.coder_workspace.me.start_count == 1
+    "user.coder-agent-token" = local.agent_token
+
+    "cloud-init.user-data" = <<-EOF
+      #cloud-config
+      hostname: ${lower(data.coder_workspace.me.name)}
+      users:
+        - name: ${local.workspace_user}
+          uid: 1000
+          groups: sudo
+          shell: /bin/bash
+          sudo: ALL=(ALL) NOPASSWD:ALL
+      write_files:
+        - path: /opt/coder/init
+          permissions: "0755"
+          encoding: b64
+          content: ${base64encode(local.agent_init_script)}
+        - path: /opt/coder/init.env
+          permissions: "0600"
+          content: |
+            CODER_AGENT_TOKEN=${local.agent_token}
+            CODER_AGENT_URL=${data.coder_workspace.me.access_url}
+        - path: /etc/systemd/system/coder-agent.service
+          permissions: "0644"
+          content: |
+            [Unit]
+            Description=Coder Agent
+            After=network-online.target
+            Wants=network-online.target
+            [Service]
+            User=${local.workspace_user}
+            EnvironmentFile=/opt/coder/init.env
+            ExecStart=/opt/coder/init
+            Restart=always
+            RestartSec=10
+            TimeoutStopSec=90
+            KillMode=process
+            OOMScoreAdjust=-900
+            SyslogIdentifier=coder-agent
+            [Install]
+            WantedBy=multi-user.target
+      runcmd:
+        - systemctl enable --now coder-agent.service
+    EOF
+  }
+
+  device {
+    name = "root"
+    type = "disk"
+    properties = {
+      path = "/"
+      pool = var.storage_pool
+      size = "${data.coder_parameter.disk.value}GiB"
+    }
+  }
+
+  lifecycle {
+    ignore_changes = [
+      config["cloud-init.user-data"],
+      config["user.coder-agent-token"],
+      image,
+    ]
+  }
+}
+
+resource "null_resource" "token_refresh" {
+  count = data.coder_workspace.me.start_count
+
+  triggers = {
+    agent_token = local.agent_token
+    instance    = incus_instance.dev.name
+  }
+
+  depends_on = [incus_instance.dev]
+
+  provisioner "local-exec" {
+    command = <<-EOT
+      INSTANCE="${incus_instance.dev.name}"
+      echo "Waiting for VM agent..."
+      for i in $(seq 1 40); do
+        incus exec "$INSTANCE" -- true 2>/dev/null && break
+        echo "Attempt $i: not ready, waiting..."
+        sleep 5
+      done
+      echo "Waiting for cloud-init..."
+      incus exec "$INSTANCE" -- bash -c '
+        for i in $(seq 1 60); do
+          [ -f /var/lib/cloud/instance/boot-finished ] && break
+          sleep 5
+        done
+      '
+      echo "Refreshing agent token..."
+      printf 'CODER_AGENT_TOKEN=${local.agent_token}\nCODER_AGENT_URL=${data.coder_workspace.me.access_url}\n' \
+        | incus exec "$INSTANCE" -- bash -c 'cat > /opt/coder/init.env && chmod 600 /opt/coder/init.env'
+      incus exec "$INSTANCE" -- systemctl restart coder-agent.service
+    EOT
+  }
+}
+
+resource "coder_metadata" "info" {
+  count       = data.coder_workspace.me.start_count
+  resource_id = incus_instance.dev.name
+
+  item {
+    key   = "instance"
+    value = incus_instance.dev.name
+  }
+  item {
+    key   = "image"
+    value = "images:${data.coder_parameter.image.value}/${var.arch}"
+  }
+  item {
+    key   = "storage_pool"
+    value = var.storage_pool
+  }
+  item {
+    key   = "arch"
+    value = var.arch
+  }
+  item {
+    key   = "cpu"
+    value = tostring(data.coder_parameter.cpu.value)
+  }
+  item {
+    key   = "memory"
+    value = "${data.coder_parameter.memory.value} GiB"
+  }
+  item {
+    key   = "disk"
+    value = "${data.coder_parameter.disk.value} GiB"
+  }
+}
+
+locals {
+  workspace_user    = lower(data.coder_workspace_owner.me.name)
+  agent_token       = data.coder_workspace.me.start_count == 1 ? coder_agent.main[0].token : ""
+  agent_init_script = data.coder_workspace.me.start_count == 1 ? coder_agent.main[0].init_script : ""
+}