From 7b7ee5455f7b7db3e997b444b51878e5cdba0625 Mon Sep 17 00:00:00 2001
From: Solomon Hykes <solomon@dagger.io>
Date: Sun, 19 Dec 2021 09:39:52 +0000
Subject: [PATCH] Resolve spec merge conflicts

Signed-off-by: Solomon Hykes <solomon@dagger.io>
---
 docs/reference/README.md                      |   4 +-
 docs/reference/europa/dagger/engine.md        | 283 ++++++++++++++++++
 europa-universe/docker/build.cue              |   2 +-
 europa-universe/docker/docker.cue             |   2 +-
 europa-universe/yarn/yarn.cue                 |   2 +-
 stdlib/europa/dagger/engine/exec.cue          |   1 +
 stdlib/europa/dagger/engine/fs.cue            |  55 ++++
 .../dagger/engine/{spec/engine => }/git.cue   |   2 +
 .../dagger/engine/{spec/engine => }/http.cue  |   3 +-
 stdlib/europa/dagger/engine/image.cue         |  50 ++++
 stdlib/europa/dagger/engine/plan.cue          |  71 ++++-
 .../dagger/engine/spec/engine/address.cue     |   4 -
 .../europa/dagger/engine/spec/engine/exec.cue |  71 -----
 .../europa/dagger/engine/spec/engine/fs.cue   |  53 ----
 .../dagger/engine/spec/engine/image.cue       |  51 ----
 .../europa/dagger/engine/spec/engine/plan.cue | 102 -------
 stdlib/europa/dagger/engine/spec/spec.cue     |   2 -
 stdlib/europa/dagger/plan.cue                 |   2 +-
 stdlib/europa/dagger/types.cue                |   2 +-
 stdlib/europa/dagger/utils.cue                |   2 +-
 stdlib/stdlib.go                              |   2 +-
 21 files changed, 463 insertions(+), 303 deletions(-)
 create mode 100644 docs/reference/europa/dagger/engine.md
 rename stdlib/europa/dagger/engine/{spec/engine => }/git.cue (84%)
 rename stdlib/europa/dagger/engine/{spec/engine => }/http.cue (94%)
 delete mode 100644 stdlib/europa/dagger/engine/spec/engine/address.cue
 delete mode 100644 stdlib/europa/dagger/engine/spec/engine/exec.cue
 delete mode 100644 stdlib/europa/dagger/engine/spec/engine/fs.cue
 delete mode 100644 stdlib/europa/dagger/engine/spec/engine/image.cue
 delete mode 100644 stdlib/europa/dagger/engine/spec/engine/plan.cue
 delete mode 100644 stdlib/europa/dagger/engine/spec/spec.cue

diff --git a/docs/reference/README.md b/docs/reference/README.md
index ef1dc42e..4bc60543 100644
--- a/docs/reference/README.md
+++ b/docs/reference/README.md
@@ -20,9 +20,7 @@
 - [docker](./docker/README.md) - Docker container operations
 - [docker/compose](./docker/compose.md) - Docker-compose operations
 - [europa/dagger](./europa/dagger/README.md) - -
-- [europa/dagger/engine](./europa/dagger/engine/README.md) - -
-- [europa/dagger/engine/spec](./europa/dagger/engine/spec/README.md) - Placeholder package, to keep docs generating tool happy.
-- [europa/dagger/engine/spec/engine](./europa/dagger/engine/spec/engine.md) - The Dagger API.
+- [europa/dagger/engine](./europa/dagger/engine.md) - -
 - [gcp](./gcp/README.md) - Google Cloud Platform
 - [gcp/cloudrun](./gcp/cloudrun.md) - -
 - [gcp/gcr](./gcp/gcr.md) - Google Container Registry
diff --git a/docs/reference/europa/dagger/engine.md b/docs/reference/europa/dagger/engine.md
new file mode 100644
index 00000000..0db8b5c5
--- /dev/null
+++ b/docs/reference/europa/dagger/engine.md
@@ -0,0 +1,283 @@
+---
+sidebar_label: engine
+---
+
+# alpha.dagger.io/europa/dagger/engine
+
+```cue
+import "alpha.dagger.io/europa/dagger/engine"
+```
+
+## engine.#Build
+
+Build a container image using buildkit
+
+### engine.#Build Inputs
+
+_No input._
+
+### engine.#Build Outputs
+
+_No output._
+
+## engine.#CacheDir
+
+A (best effort) persistent cache dir
+
+### engine.#CacheDir Inputs
+
+_No input._
+
+### engine.#CacheDir Outputs
+
+_No output._
+
+## engine.#Copy
+
+Copy files from one FS tree to another
+
+### engine.#Copy Inputs
+
+_No input._
+
+### engine.#Copy Outputs
+
+_No output._
+
+## engine.#CopyInfo
+
+### engine.#CopyInfo Inputs
+
+_No input._
+
+### engine.#CopyInfo Outputs
+
+_No output._
+
+## engine.#DAG
+
+A special kind of program which `dagger` can execute.
+
+### engine.#DAG Inputs
+
+_No input._
+
+### engine.#DAG Outputs
+
+_No output._
+
+## engine.#Exec
+
+Execute a command in a container
+
+### engine.#Exec Inputs
+
+_No input._
+
+### engine.#Exec Outputs
+
+_No output._
+
+## engine.#FS
+
+A reference to a filesystem tree. For example:  - The root filesystem of a container  - A source code repository  - A directory containing binary artifacts Rule of thumb: if it fits in a tar archive, it fits in a #FS.
+
+### engine.#FS Inputs
+
+_No input._
+
+### engine.#FS Outputs
+
+_No output._
+
+## engine.#GitPull
+
+Pull a directory from a git remote
+
+### engine.#GitPull Inputs
+
+_No input._
+
+### engine.#GitPull Outputs
+
+_No output._
+
+## engine.#GitPush
+
+Push a directory to a git remote
+
+### engine.#GitPush Inputs
+
+_No input._
+
+### engine.#GitPush Outputs
+
+_No output._
+
+## engine.#HTTPFetch
+
+Fetch a file over HTTP
+
+### engine.#HTTPFetch Inputs
+
+_No input._
+
+### engine.#HTTPFetch Outputs
+
+_No output._
+
+## engine.#ImageConfig
+
+Container image config. See [OCI](https://www.opencontainers.org/). Spec left open on purpose to account for additional fields. [Image Spec](https://github.com/opencontainers/image-spec/blob/main/specs-go/v1/config.go) [Docker Superset](https://github.com/moby/buildkit/blob/master/frontend/dockerfile/dockerfile2llb/image.go)
+
+### engine.#ImageConfig Inputs
+
+_No input._
+
+### engine.#ImageConfig Outputs
+
+_No output._
+
+## engine.#Merge
+
+Merge multiple FS trees into one
+
+### engine.#Merge Inputs
+
+_No input._
+
+### engine.#Merge Outputs
+
+_No output._
+
+## engine.#Mkdir
+
+Create a directory
+
+### engine.#Mkdir Inputs
+
+_No input._
+
+### engine.#Mkdir Outputs
+
+_No output._
+
+## engine.#Mount
+
+A transient filesystem mount.
+
+### engine.#Mount Inputs
+
+_No input._
+
+### engine.#Mount Outputs
+
+_No output._
+
+## engine.#Plan
+
+A deployment plan executed by `dagger up`
+
+### engine.#Plan Inputs
+
+_No input._
+
+### engine.#Plan Outputs
+
+_No output._
+
+## engine.#Pull
+
+Download a container image from a remote repository
+
+### engine.#Pull Inputs
+
+_No input._
+
+### engine.#Pull Outputs
+
+_No output._
+
+## engine.#Push
+
+Upload a container image to a remote repository
+
+### engine.#Push Inputs
+
+_No input._
+
+### engine.#Push Outputs
+
+_No output._
+
+## engine.#ReadFile
+
+Read a file from a filesystem tree
+
+### engine.#ReadFile Inputs
+
+_No input._
+
+### engine.#ReadFile Outputs
+
+_No output._
+
+## engine.#Scratch
+
+Produce an empty directory
+
+### engine.#Scratch Inputs
+
+_No input._
+
+### engine.#Scratch Outputs
+
+_No output._
+
+## engine.#Secret
+
+A reference to an external secret, for example:  - A password  - A SSH private key  - An API token Secrets are never merged in the Cue tree. They can only be used by a special filesystem mount designed to minimize leak risk.
+
+### engine.#Secret Inputs
+
+_No input._
+
+### engine.#Secret Outputs
+
+_No output._
+
+## engine.#Service
+
+A reference to a network service endpoint, for example:  - A TCP or UDP port  - A unix or npipe socket  - An HTTPS endpoint
+
+### engine.#Service Inputs
+
+_No input._
+
+### engine.#Service Outputs
+
+_No output._
+
+## engine.#TempDir
+
+A temporary directory for command execution
+
+### engine.#TempDir Inputs
+
+_No input._
+
+### engine.#TempDir Outputs
+
+_No output._
+
+## engine.#WriteFile
+
+Write a file to a filesystem tree, creating it if needed
+
+### engine.#WriteFile Inputs
+
+_No input._
+
+### engine.#WriteFile Outputs
+
+_No output._
diff --git a/europa-universe/docker/build.cue b/europa-universe/docker/build.cue
index 5a12986a..c7ec2128 100644
--- a/europa-universe/docker/build.cue
+++ b/europa-universe/docker/build.cue
@@ -2,7 +2,7 @@ package docker
 
 import (
 	"dagger.io/dagger"
-	"dagger.io/dagger/engine/spec/engine"
+	"dagger.io/dagger/engine"
 )
 
 // Modular build API for Docker containers
diff --git a/europa-universe/docker/docker.cue b/europa-universe/docker/docker.cue
index dd331c23..154e6b7c 100644
--- a/europa-universe/docker/docker.cue
+++ b/europa-universe/docker/docker.cue
@@ -4,7 +4,7 @@ package docker
 import (
 	"list"
 
-	"dagger.io/dagger/engine/spec/engine"
+	"dagger.io/dagger/engine"
 	"dagger.io/dagger"
 )
 
diff --git a/europa-universe/yarn/yarn.cue b/europa-universe/yarn/yarn.cue
index 3b51cf19..6f0d839c 100644
--- a/europa-universe/yarn/yarn.cue
+++ b/europa-universe/yarn/yarn.cue
@@ -5,7 +5,7 @@ import (
 	"strings"
 
 	"dagger.io/dagger"
-	"dagger.io/dagger/engine/spec/engine"
+	"dagger.io/dagger/engine"
 
 	"universe.dagger.io/alpine"
 	"universe.dagger.io/bash"
diff --git a/stdlib/europa/dagger/engine/exec.cue b/stdlib/europa/dagger/engine/exec.cue
index fc6c883b..afde7292 100644
--- a/stdlib/europa/dagger/engine/exec.cue
+++ b/stdlib/europa/dagger/engine/exec.cue
@@ -3,6 +3,7 @@ package engine
 // Execute a command in a container
 #Exec: {
 	_type: "Exec"
+	$dagger: task: _name: "Exec"
 
 	// Container filesystem
 	input: #FS
diff --git a/stdlib/europa/dagger/engine/fs.cue b/stdlib/europa/dagger/engine/fs.cue
index 1356ff73..a16c7d1a 100644
--- a/stdlib/europa/dagger/engine/fs.cue
+++ b/stdlib/europa/dagger/engine/fs.cue
@@ -3,6 +3,7 @@ package engine
 // Read a file from a filesystem tree
 #ReadFile: {
 	_type: "ReadFile"
+	$dagger: task: _name: "ReadFile"
 
 	// Filesystem tree holding the file
 	input: #FS
@@ -18,6 +19,7 @@ package engine
 // Write a file to a filesystem tree, creating it if needed
 #WriteFile: {
 	_type: "WriteFile"
+	$dagger: task: _name: "WriteFile"
 
 	// Input filesystem tree
 	input: #FS
@@ -31,3 +33,56 @@ package engine
 	// Output filesystem tree
 	output: #FS
 }
+
+// Produce an empty directory
+#Scratch: {
+	@dagger(notimplemented)
+	$dagger: task: _name: "Scratch"
+
+	output: #FS
+}
+
+// Create a directory
+#Mkdir: {
+	@dagger(notimplemented)
+	$dagger: task: _name: "Mkdir"
+
+	input: #FS
+
+	// Path of the directory
+	path: string
+	// FIXME: permissions?
+	mode: int
+	// Create parent directories as needed?
+	parents: *true | false
+
+	output: #FS
+}
+
+// Copy files from one FS tree to another
+#Copy: {
+	@dagger(notimplemented)
+	$dagger: task: _name: "Copy"
+
+	input: #FS
+	#CopyInfo
+	output: #FS
+}
+
+#CopyInfo: {
+	source: {
+		root: #FS
+		path: string | *"/"
+	}
+	dest: string
+}
+
+// Merge multiple FS trees into one
+#Merge: {
+	@dagger(notimplemented)
+	$dagger: task: _name: "Merge"
+
+	input: #FS
+	layers: [...#CopyInfo]
+	output: #FS
+}
diff --git a/stdlib/europa/dagger/engine/spec/engine/git.cue b/stdlib/europa/dagger/engine/git.cue
similarity index 84%
rename from stdlib/europa/dagger/engine/spec/engine/git.cue
rename to stdlib/europa/dagger/engine/git.cue
index f08ef290..f27db9ca 100644
--- a/stdlib/europa/dagger/engine/spec/engine/git.cue
+++ b/stdlib/europa/dagger/engine/git.cue
@@ -2,6 +2,7 @@ package engine
 
 // Push a directory to a git remote
 #GitPush: {
+	@dagger(notimplemented)
 	$dagger: task: _name: "GitPush"
 
 	input:  #FS
@@ -11,6 +12,7 @@ package engine
 
 // Pull a directory from a git remote
 #GitPull: {
+	@dagger(notimplemented)
 	$dagger: task: _name: "GitPull"
 
 	remote: string
diff --git a/stdlib/europa/dagger/engine/spec/engine/http.cue b/stdlib/europa/dagger/engine/http.cue
similarity index 94%
rename from stdlib/europa/dagger/engine/spec/engine/http.cue
rename to stdlib/europa/dagger/engine/http.cue
index f6adb948..d5f9a56f 100644
--- a/stdlib/europa/dagger/engine/spec/engine/http.cue
+++ b/stdlib/europa/dagger/engine/http.cue
@@ -18,7 +18,8 @@ package engine
 
 // Fetch a file over HTTP
 #HTTPFetch: {
-	_httpFetch: {}
+	@dagger(notimplemented)
+	$dagger: task: _name: "HTTPFetch"
 
 	// Source url
 	// Example: https://www.dagger.io/index.html
diff --git a/stdlib/europa/dagger/engine/image.cue b/stdlib/europa/dagger/engine/image.cue
index 5aa801bd..2d6ac907 100644
--- a/stdlib/europa/dagger/engine/image.cue
+++ b/stdlib/europa/dagger/engine/image.cue
@@ -1,5 +1,30 @@
 package engine
 
+// Upload a container image to a remote repository
+#Push: {
+	@dagger(notimplemented)
+	$dagger: task: _name: "Push"
+
+	// Target repository address
+	dest: #Ref
+
+	// Filesystem contents to push
+	input: #FS
+
+	// Container image config
+	config: #ImageConfig
+
+	// Authentication
+	auth: [...{
+		target:   string
+		username: string
+		secret:   string | #Secret
+	}]
+
+	// Complete ref of the pushed image, including digest
+	result: #Ref
+}
+
 // A ref is an address for a remote container image
 //
 // Examples:
@@ -23,6 +48,7 @@ package engine
 // Download a container image from a remote repository
 #Pull: {
 	_type: "Pull"
+	$dagger: task: _name: "Pull"
 
 	// Repository source ref
 	source: #Ref
@@ -43,3 +69,27 @@ package engine
 	// Downloaded container image config
 	config: #ImageConfig
 }
+
+// Build a container image using buildkit
+// FIXME: rename to #Dockerfile to clarify scope
+#Build: {
+	@dagger(notimplemented)
+	$dagger: task: _name: "Build"
+
+	// Source directory to build
+	source: #FS
+	{
+		frontend:   "dockerfile"
+		dockerfile: {
+			path: string | *"Dockerfile"
+		} | {
+			contents: string
+		}
+	}
+
+	// Root filesystem produced by build
+	output: #FS
+
+	// Container image config produced by build
+	config: #ImageConfig
+}
diff --git a/stdlib/europa/dagger/engine/plan.cue b/stdlib/europa/dagger/engine/plan.cue
index d813666f..923614bf 100644
--- a/stdlib/europa/dagger/engine/plan.cue
+++ b/stdlib/europa/dagger/engine/plan.cue
@@ -1,17 +1,31 @@
 package engine
 
 // A deployment plan executed by `dagger up`
-#Plan: {
+#Plan: #DAG
+
+// A special kind of program which `dagger` can execute.
+#DAG: {
 	// Receive inputs from the client
 	inputs: {
 		// Receive directories
-		directories: [string]: _#inputDirectory
+		directories: [name=string]: _#inputDirectory
 		// Securely receive secrets
-		secrets: [string]: _#inputSecret
+		secrets: [name=string]: _#inputSecret
+		// Receive runtime parameters
+		params: {
+			@dagger(notimplemented)
+			[name=string]: _
+		}
+	}
+
+	// Send outputs to the client
+	outputs: {
+		@dagger(notimplemented)
+		directories: [name=string]: _#outputDirectory
 	}
 
 	// Forward network services to and from the client
-	proxy: [string]: _#proxyEndpoint
+	proxy: [endpoint=string]: _#proxyEndpoint
 
 	// Execute actions in containers
 	actions: {
@@ -20,10 +34,12 @@ package engine
 }
 
 _#inputDirectory: {
+	// FIXME: rename to "InputDirectory" for consistency
+	_type: "LocalDirectory"
+
 	// Import from this path ON THE CLIENT MACHINE
 	// Example: "/Users/Alice/dev/todoapp/src"
-	_type: "LocalDirectory"
-	path:  string
+	path: string
 
 	// Filename patterns to include
 	// Example: ["*.go", "Dockerfile"]
@@ -47,6 +63,14 @@ _#inputSecret: {
 	contents: #Secret
 
 	{
+		@dagger(notimplemented)
+
+		// Execute a command ON THE CLIENT MACHINE and read secret from standard output
+		command: [string, ...string] | string
+		// Execute command in an interactive terminal
+		//  for example to prompt for a passphrase
+		interactive: true | *false
+	} | {
 		// Read secret from a file ON THE CLIENT MACHINE
 		_type: "SecretFile"
 		path:  string
@@ -57,16 +81,45 @@ _#inputSecret: {
 	}
 }
 
+_#outputDirectory: {
+	@dagger(notimplemented)
+
+	// Filesystem contents to export
+	// Reference an #FS field produced by an action
+	contents: #FS
+
+	// Export to this path ON THE CLIENT MACHINE
+	dest: string
+}
+
 // Forward a network endpoint to and from the client
 _#proxyEndpoint: {
 	// Service endpoint can be proxied to action containers as unix sockets
 	// FIXME: should #Service be renamed to #ServiceEndpoint or #Endpoint? Naming things is hard...
-	// FIXME: reconcile with spec
-	_type:   "Service"
-	service: #Service
+	_type: "Service"
+	// FIXME: should be endpoint
+	service:  #Service
+	endpoint: service
 	{
+		// FIXME: reconcile with spec
 		unix: string
 	} | {
+		// FIXME: reconcile with spec
 		npipe: string
+	} | {
+		// Listen for connections ON THE CLIENT MACHINE, proxy to actions
+		listen: #Address @dagger(notimplemented)
+	} | {
+		// Connect to a remote endpoint FROM THE CLIENT MACHINE, proxy to actions
+		connect: #Address @dagger(notimplemented)
+	} | {
+		// Proxy to/from the contents of a file ON THE CLIENT MACHINE
+		filepath: string @dagger(notimplemented)
+	} | {
+		// Proxy to/from standard input and output of a command ON THE CLIENT MACHINE
+		command: [string, ...string] | string @dagger(notimplemented)
 	}
 }
+
+// A network service address
+#Address: string & =~"^(tcp://|unix://|udp://).*"
diff --git a/stdlib/europa/dagger/engine/spec/engine/address.cue b/stdlib/europa/dagger/engine/spec/engine/address.cue
deleted file mode 100644
index 908275ca..00000000
--- a/stdlib/europa/dagger/engine/spec/engine/address.cue
+++ /dev/null
@@ -1,4 +0,0 @@
-package engine
-
-// A network service address
-#Address: string & =~"^(tcp://|unix://|udp://).*"
diff --git a/stdlib/europa/dagger/engine/spec/engine/exec.cue b/stdlib/europa/dagger/engine/spec/engine/exec.cue
deleted file mode 100644
index 8d369018..00000000
--- a/stdlib/europa/dagger/engine/spec/engine/exec.cue
+++ /dev/null
@@ -1,71 +0,0 @@
-package engine
-
-// Execute a command in a container
-#Exec: {
-	$dagger: task: _name: "Exec"
-
-	// Container filesystem
-	input: #FS
-
-	// Transient filesystem mounts
-	//   Key is an arbitrary name, for example "app source code"
-	//   Value is mount configuration
-	mounts: [name=string]: #Mount
-
-	// Command to execute
-	// Example: ["echo", "hello, world!"]
-	args: [...string]
-
-	// Environment variables
-	env: [key=string]: string
-
-	// Working directory
-	workdir: string | *"/"
-
-	// User ID or name
-	user: string | *"root"
-
-	// If set, always execute even if the operation could be cached
-	always: true | *false
-
-	// Modified filesystem
-	output: #FS
-
-	// Command exit code
-	// Currently this field can only ever be zero.
-	// If the command fails, DAG execution is immediately terminated.
-	// FIXME: expand API to allow custom handling of failed commands
-	exit: int & 0
-
-	// Inject hostname resolution into the container
-	// key is hostname, value is IP
-	hosts: [hostname=string]: string
-}
-
-// A transient filesystem mount.
-#Mount: {
-	dest: string
-	{
-		contents: #CacheDir | #TempDir | #Service
-	} | {
-		contents: #FS
-		source:   string | *"/"
-		ro:       true | *false
-	} | {
-		contents: #Secret
-		uid:      uint32 | *0
-		gid:      uint32 | *0
-		optional: true | *false
-	}
-}
-
-// A (best effort) persistent cache dir
-#CacheDir: {
-	id:          string
-	concurrency: *"shared" | "private" | "locked"
-}
-
-// A temporary directory for command execution
-#TempDir: {
-	size?: int64
-}
diff --git a/stdlib/europa/dagger/engine/spec/engine/fs.cue b/stdlib/europa/dagger/engine/spec/engine/fs.cue
deleted file mode 100644
index 72a94d42..00000000
--- a/stdlib/europa/dagger/engine/spec/engine/fs.cue
+++ /dev/null
@@ -1,53 +0,0 @@
-package engine
-
-// Produce an empty directory
-// FIXME: replace with a null value for #FS?
-#Scratch: {
-	$dagger: task: _name: "Scratch"
-
-	output: #FS
-}
-
-#ReadFile: $dagger: task: _name: "ReadFile"
-
-#WriteFile: $dagger: task: _name: "WriteFile"
-
-// Create a directory
-#Mkdir: {
-	$dagger: task: _name: "Mkdir"
-
-	input: #FS
-
-	// Path of the directory
-	path: string
-	// FIXME: permissions?
-	mode: int
-	// Create parent directories as needed?
-	parents: *true | false
-
-	output: #FS
-}
-
-#Copy: {
-	$dagger: task: _name: "Copy"
-
-	input: #FS
-	#CopyInfo
-	output: #FS
-}
-
-#CopyInfo: {
-	source: {
-		root: #FS
-		path: string | *"/"
-	}
-	dest: string
-}
-
-#Merge: {
-	$dagger: task: _name: "Merge"
-
-	input: #FS
-	layers: [...#CopyInfo]
-	output: #FS
-}
diff --git a/stdlib/europa/dagger/engine/spec/engine/image.cue b/stdlib/europa/dagger/engine/spec/engine/image.cue
deleted file mode 100644
index b10ccb88..00000000
--- a/stdlib/europa/dagger/engine/spec/engine/image.cue
+++ /dev/null
@@ -1,51 +0,0 @@
-package engine
-
-// Upload a container image to a remote repository
-#Push: {
-	$dagger: task: _name: "Push"
-
-	// Target repository address
-	dest: #Ref
-
-	// Filesystem contents to push
-	input: #FS
-
-	// Container image config
-	config: #ImageConfig
-
-	// Authentication
-	auth: [...{
-		target:   string
-		username: string
-		secret:   string | #Secret
-	}]
-
-	// Complete ref of the pushed image, including digest
-	result: #Ref
-}
-
-// Download a container image from a remote repository
-#Pull: $dagger: task: _name: "Pull"
-
-// Build a container image using buildkit
-// FIXME: rename to #Dockerfile to clarify scope
-#Build: {
-	$dagger: task: _name: "Build"
-
-	// Source directory to build
-	source: #FS
-	{
-		frontend:   "dockerfile"
-		dockerfile: {
-			path: string | *"Dockerfile"
-		} | {
-			contents: string
-		}
-	}
-
-	// Root filesystem produced by build
-	output: #FS
-
-	// Container image config produced by build
-	config: #ImageConfig
-}
diff --git a/stdlib/europa/dagger/engine/spec/engine/plan.cue b/stdlib/europa/dagger/engine/spec/engine/plan.cue
deleted file mode 100644
index 423c31b8..00000000
--- a/stdlib/europa/dagger/engine/spec/engine/plan.cue
+++ /dev/null
@@ -1,102 +0,0 @@
-// The Dagger API.
-package engine
-
-// A deployment plan executed by `dagger up`
-#Plan: #DAG
-
-// A special kind of program which `dagger` can execute.
-#DAG: {
-	// Receive inputs from the client
-	inputs: {
-		// Receive directories
-		directories: [name=string]: _#inputDirectory
-		// Securely receive secrets
-		secrets: [name=string]: _#inputSecret
-		// Receive runtime parameters
-		params: [name=string]: _
-	}
-
-	// Send outputs to the client
-	outputs: {
-		directories: [name=string]: _#outputDirectory
-	}
-
-	// Forward network services to and from the client
-	proxy: [name=string]: _#proxyEndpoint
-
-	// Execute actions in containers
-	actions: {
-		...
-	}
-}
-
-_#inputDirectory: {
-	// Import from this path ON THE CLIENT MACHINE
-	// Example: "/Users/Alice/dev/todoapp/src"
-	source: string
-
-	// Filename patterns to include
-	// Example: ["*.go", "Dockerfile"]
-	include?: [...string]
-
-	// Filename patterns to exclude
-	// Example: ["node_modules"]
-	exclude?: [...string]
-
-	// Imported filesystem contents
-	// Use this as input for actions requiring an #FS field
-	contents: #FS
-}
-
-_#outputDirectory: {
-	// Filesystem contents to export
-	// Reference an #FS field produced by an action
-	contents: #FS
-
-	// Export to this path ON THE CLIENT MACHINE
-	dest: string
-}
-
-// Securely receive a secret from the client
-_#inputSecret: {
-	// Reference to the secret contents
-	// Use this by securely mounting it into a container.
-	// See universe.dagger.io/docker.#Run.mounts
-	// FIXME: `contents` field name causes confusion (not actually the secret contents..)
-	contents: #Secret
-
-	{
-		// Execute a command ON THE CLIENT MACHINE and read secret from standard output
-		command: [string, ...string] | string
-		// Execute command in an interactive terminal
-		//  for example to prompt for a passphrase
-		interactive: true | *false
-	} | {
-		// Read secret from a file ON THE CLIENT MACHINE
-		path: string
-	} | {
-		// Read secret from an environment variable ON THE CLIENT MACHINE
-		envvar: string
-	}
-}
-
-// Forward a network endpoint to and from the client
-_#proxyEndpoint: {
-	// Service endpoint can be proxied to action containers as unix sockets
-	// FIXME: should #Service be renamed to #ServiceEndpoint or #Endpoint? Naming things is hard...
-	endpoint: #Service
-
-	{
-		// Listen for connections ON THE CLIENT MACHINE, proxy to actions
-		listen: #Address
-	} | {
-		// Connect to a remote endpoint FROM THE CLIENT MACHINE, proxy to actions
-		connect: #Address
-	} | {
-		// Proxy to/from the contents of a file ON THE CLIENT MACHINE
-		filepath: string
-	} | {
-		// Proxy to/from standard input and output of a command ON THE CLIENT MACHINE
-		command: [string, ...string] | string
-	}
-}
diff --git a/stdlib/europa/dagger/engine/spec/spec.cue b/stdlib/europa/dagger/engine/spec/spec.cue
deleted file mode 100644
index 3bee3f87..00000000
--- a/stdlib/europa/dagger/engine/spec/spec.cue
+++ /dev/null
@@ -1,2 +0,0 @@
-// Placeholder package, to keep docs generating tool happy.
-package spec
diff --git a/stdlib/europa/dagger/plan.cue b/stdlib/europa/dagger/plan.cue
index 891174ea..c9db332f 100644
--- a/stdlib/europa/dagger/plan.cue
+++ b/stdlib/europa/dagger/plan.cue
@@ -1,7 +1,7 @@
 package dagger
 
 import (
-	"alpha.dagger.io/europa/dagger/engine/spec/engine"
+	"alpha.dagger.io/europa/dagger/engine"
 )
 
 // A deployment plan executed by `dagger up`
diff --git a/stdlib/europa/dagger/types.cue b/stdlib/europa/dagger/types.cue
index 5cb13464..f1f53df8 100644
--- a/stdlib/europa/dagger/types.cue
+++ b/stdlib/europa/dagger/types.cue
@@ -1,7 +1,7 @@
 package dagger
 
 import (
-	"alpha.dagger.io/europa/dagger/engine/spec/engine"
+	"alpha.dagger.io/europa/dagger/engine"
 )
 
 // A reference to a filesystem tree.
diff --git a/stdlib/europa/dagger/utils.cue b/stdlib/europa/dagger/utils.cue
index 29adf65b..bb9fccc4 100644
--- a/stdlib/europa/dagger/utils.cue
+++ b/stdlib/europa/dagger/utils.cue
@@ -1,7 +1,7 @@
 package dagger
 
 import (
-	"alpha.dagger.io/europa/dagger/engine/spec/engine"
+	"alpha.dagger.io/europa/dagger/engine"
 )
 
 // Select a subdirectory from a filesystem tree
diff --git a/stdlib/stdlib.go b/stdlib/stdlib.go
index bb69da5e..958fe794 100644
--- a/stdlib/stdlib.go
+++ b/stdlib/stdlib.go
@@ -14,7 +14,7 @@ import (
 
 var (
 	// FS contains the filesystem of the stdlib.
-	//go:embed **/*.cue **/*/*.cue europa/dagger/*.cue europa/dagger/engine/*.cue europa/dagger/engine/spec/*.cue europa/dagger/engine/spec/engine/*.cue
+	//go:embed **/*.cue **/*/*.cue europa/dagger/*.cue europa/dagger/engine/*.cue
 	FS embed.FS
 
 	ModuleName    = "alpha.dagger.io"