## Problem
The CLI does not honor `default` values on template parameters in two
ways:
1. **`--use-parameter-defaults` rejects empty-string defaults.** The
check `parameterValue != ""` means `default = ""` in Terraform falls
through to an interactive prompt. In CI this causes an EOF error.
2. **`--use-parameter-defaults` only exists on `coder create`.** The
`start`, `update`, and `restart` commands never wire it through. SSH
auto-start passes empty `workspaceParameterFlags{}`, so users SSH-ing
into a stopped workspace with new template parameters get stuck in an
interactive prompt they cannot complete.
## Fix
### 1. Fix empty-string default detection and expose flag on all
commands
Replace `parameterValue != ""` with a check based on `!tvp.Required`. A
parameter with `Required==false` always has a valid default in
Terraform, even if that default is `""`. Also respect CLI defaults
provided via `--parameter-default`.
Move `--use-parameter-defaults` from a standalone option on `create`
into the shared `workspaceParameterFlags` struct. This exposes the flag
(and `CODER_WORKSPACE_USE_PARAMETER_DEFAULTS`) on `start`, `update`, and
`restart` via `allOptions()`. Wire it through
`buildWorkspaceStartRequest` so the resolver receives it.
### 2. SSH auto-start always uses defaults
Set `useParameterDefaults: true` on both `startWorkspace` calls in the
SSH auto-start path (initial start and the forbidden/upgrade fallback).
SSH is non-interactive and should never prompt.
Fixes https://linear.app/codercom/issue/DEVEX-180
Fixes https://github.com/coder/coder/issues/22272
<details><summary>Implementation notes</summary>
### Scoping decisions
- **`--yes` does not imply `--use-parameter-defaults`**: Making `--yes`
auto-accept defaults exposes a validation gap in the dynamic parameter
path (client-side validation happens during prompting, and skipping
prompts bypasses it). This is deferred to a follow-up that also
addresses `codersdk.ValidateWorkspaceBuildParameter` integration in the
resolver. Tracked in PLAT-114.
- **Explicit overrides always win**: `--parameter`,
`--rich-parameter-file`, and `--preset` are resolved in stages 1-5 of
the resolver, before `resolveWithInput` runs. No change needed for
precedence.
- **`!tvp.Required` vs `parameterValue != ""`**: The `Required` field is
set by the Terraform provider based on whether a `default` is present.
This is the canonical signal for "has a default," not the string value
itself.
</details>
> Generated with [Coder Agents](https://coder.com/agents)
Adds a `--no-wait` flag (CODER_CREATE_NO_WAIT) to the create command,
matching the existing pattern in `coder start`. When set, the `coder
create` command returns immediately after the workspace creation API
call succeeds instead of streaming build logs until completion.
This enables fire-and-forget workspace creation in CI/automation
contexts (e.g., GitHub Actions), where waiting for the build to finish
is unnecessary. Combined with other existing flags, users can create a
workspace with no interactivity, assuming the user is already
authenticated.
This pull request introduces support for external workspace management, allowing users to register and manage workspaces that are provisioned and managed outside of the Coder.
* coder external-workspaces create - Creates a new external workspace (this command extends coder create)
* Example: coder external-workspaces create ext-workspace --template=externally-managed-workspace -y
* Checks if template has coder_external_agent resource before creating a workspace
* coder external-workspaces list - Lists all external workspaces
* coder external-workspaces agent-instructions <workspace name> <agent name> - Retrieves agent connection instruction
* Example: coder external-workspaces agent-instructions ext-workspace main --output=json
Jeremy Ruppel