fix(devcontainers-cli): allow yarn to install when packageManager not yarn (#287)

On our dogfood workspaces, we fail to install `@devcontainers/cli` with
`yarn` because our agent directory `/home/coder/coder` contains a
`package.json` with `packageManager` being set to `pnpm`. This change
instead ensures to run `yarn global add` inside the
`$CODER_SCRIPT_DATA_DIR` so that we don't read a `package.json` and
cause things to break.

registry/coder/modules/amazon-q/main.tf

@@ -125,24 +125,7 @@ variable "ai_prompt" {
 locals {
   encoded_pre_install_script  = var.experiment_pre_install_script != null ? base64encode(var.experiment_pre_install_script) : ""
   encoded_post_install_script = var.experiment_post_install_script != null ? base64encode(var.experiment_post_install_script) : ""
-  # We need to use allowed tools to limit the context Amazon Q receives.
-  # Amazon Q can't handle big contexts, and the `create_template_version` tool
-  # has a description that's too long.
-  mcp_json         = <<EOT
-    {
-      "mcpServers": {
-        "coder": {
-          "command": "coder",
-          "args": ["exp", "mcp", "server", "--allowed-tools", "coder_report_task"],
-          "env": {
-            "CODER_MCP_APP_STATUS_SLUG": "amazon-q"
-          }
-        }
-      }
-    }
-  EOT
-  encoded_mcp_json = base64encode(local.mcp_json)
-  full_prompt      = <<-EOT
+  full_prompt                 = <<-EOT
     ${var.system_prompt}
 
     Your first task is:
@@ -211,6 +194,12 @@ resource "coder_script" "amazon_q" {
     cd "$PREV_DIR"
     echo "Extracted auth tarball"
 
+    if [ "${var.experiment_report_tasks}" = "true" ]; then
+      echo "Configuring Amazon Q to report tasks via Coder MCP..."
+      q mcp add --name coder --command "coder" --args "exp,mcp,server,--allowed-tools,coder_report_task" --env "CODER_MCP_APP_STATUS_SLUG=amazon-q" --scope global --force
+      echo "Added Coder MCP server to Amazon Q configuration"
+    fi
+
     if [ -n "${local.encoded_post_install_script}" ]; then
       echo "Running post-install script..."
       echo "${local.encoded_post_install_script}" | base64 -d > /tmp/post_install.sh
@@ -218,13 +207,6 @@ resource "coder_script" "amazon_q" {
       /tmp/post_install.sh
     fi
 
-    if [ "${var.experiment_report_tasks}" = "true" ]; then
-      echo "Configuring Amazon Q to report tasks via Coder MCP..."
-      mkdir -p ~/.aws/amazonq
-      echo "${local.encoded_mcp_json}" | base64 -d > ~/.aws/amazonq/mcp.json
-      echo "Created the ~/.aws/amazonq/mcp.json configuration file"
-    fi
-
     if [ "${var.experiment_use_tmux}" = "true" ] && [ "${var.experiment_use_screen}" = "true" ]; then
       echo "Error: Both experiment_use_tmux and experiment_use_screen cannot be true simultaneously."
       echo "Please set only one of them to true."

registry/coder/modules/claude-code/README.md

@@ -13,7 +13,7 @@ Run the [Claude Code](https://docs.anthropic.com/en/docs/agents-and-tools/claude
 ```tf
 module "claude-code" {
   source              = "registry.coder.com/coder/claude-code/coder"
-  version             = "2.0.4"
+  version             = "2.0.5"
   agent_id            = coder_agent.example.id
   folder              = "/home/coder"
   install_claude_code = true
@@ -84,7 +84,7 @@ resource "coder_agent" "main" {
 module "claude-code" {
   count               = data.coder_workspace.me.start_count
   source              = "registry.coder.com/coder/claude-code/coder"
-  version             = "2.0.4"
+  version             = "2.0.5"
   agent_id            = coder_agent.example.id
   folder              = "/home/coder"
   install_claude_code = true
@@ -102,7 +102,7 @@ Run Claude Code as a standalone app in your workspace. This will install Claude
 ```tf
 module "claude-code" {
   source              = "registry.coder.com/coder/claude-code/coder"
-  version             = "2.0.4"
+  version             = "2.0.5"
   agent_id            = coder_agent.example.id
   folder              = "/home/coder"
   install_claude_code = true

registry/coder/modules/claude-code/main.tf

@@ -289,3 +289,11 @@ resource "coder_ai_task" "claude_code" {
     id = coder_app.claude_code_web.id
   }
 }
+
+# As of https://github.com/coder/coder/commit/6ba4b5bbc95e2e528d7f5b1e31fffa200ae1a6db,
+# there's a bug in Coder's Terraform statefile parsing which prevents it from seeing coder_apps
+# in certain scenarios. This is a workaround to bypass this bug until we have a proper fix.
+# For more details see https://github.com/coder/coder/issues/18776
+resource "terraform_data" "claude_code_app_id" {
+  input = coder_app.claude_code_web.id
+}

registry/coder/modules/devcontainers-cli/README.md

@@ -15,7 +15,7 @@ The devcontainers-cli module provides an easy way to install [`@devcontainers/cl
 ```tf
 module "devcontainers-cli" {
   source   = "registry.coder.com/coder/devcontainers-cli/coder"
-  version  = "1.0.31"
+  version  = "1.0.32"
   agent_id = coder_agent.example.id
 }
 ```

registry/coder/modules/devcontainers-cli/main.test.ts

@@ -45,6 +45,8 @@ const executeScriptInContainerWithPackageManager = async (
 
   console.log(path);
 
+  await execContainer(id, [shell, "-c", "mkdir -p /tmp/coder-script-data"]);
+
   const resp = await execContainer(
     id,
     [shell, "-c", instance.script],
@@ -52,6 +54,8 @@ const executeScriptInContainerWithPackageManager = async (
       "--env",
       "CODER_SCRIPT_BIN_DIR=/tmp/coder-script-data/bin",
       "--env",
+      "CODER_SCRIPT_DATA_DIR=/tmp/coder-script-data",
+      "--env",
       `PATH=${path}:/tmp/coder-script-data/bin`,
     ],
   );

registry/coder/modules/devcontainers-cli/run.sh

@@ -1,5 +1,11 @@
 #!/usr/bin/env sh
 
+# We want to cd into `$CODER_SCRIPT_DATA_DIR` as the current directory
+# might contain a `package.json` with `packageManager` set to something
+# other than the detected package manager. When this happens, it can
+# cause the installation to fail.
+cd "$CODER_SCRIPT_DATA_DIR"
+
 # If @devcontainers/cli is already installed, we can skip
 if command -v devcontainer >/dev/null 2>&1; then
     echo "🥳 @devcontainers/cli is already installed into $(which devcontainer)!"
@@ -34,7 +40,7 @@ install() {
         # so that the devcontainer command is available
         if [ -z "$PNPM_HOME" ]; then
             PNPM_HOME="$CODER_SCRIPT_BIN_DIR"
-            export M_HOME
+            export PNPM_HOME
         fi
         pnpm add -g @devcontainers/cli
     elif [ "$PACKAGE_MANAGER" = "yarn" ]; then