diff --git a/.dagger/env/dev/plan/main.cue b/.dagger/env/dev/plan/main.cue
index 50cbd540..dbc5dfc7 100644
--- a/.dagger/env/dev/plan/main.cue
+++ b/.dagger/env/dev/plan/main.cue
@@ -2,9 +2,9 @@
 package main
 
 import (
-	"dagger.io/dagger"
-	"dagger.io/os"
-	"dagger.io/go"
+	"alpha.dagger.io/dagger"
+	"alpha.dagger.io/os"
+	"alpha.dagger.io/go"
 )
 
 // Dagger source code
diff --git a/.dagger/env/docs/plan/main.cue b/.dagger/env/docs/plan/main.cue
index 38e530e0..e5a100f8 100644
--- a/.dagger/env/docs/plan/main.cue
+++ b/.dagger/env/docs/plan/main.cue
@@ -1,9 +1,9 @@
 package main
 
 import (
-	"dagger.io/dagger"
-	"dagger.io/js/yarn"
-	"dagger.io/netlify"
+	"alpha.dagger.io/dagger"
+	"alpha.dagger.io/js/yarn"
+	"alpha.dagger.io/netlify"
 )
 
 // dagger repository
diff --git a/.dagger/env/test-core/plan/test-core.cue b/.dagger/env/test-core/plan/test-core.cue
index aae00c60..c15e75a5 100644
--- a/.dagger/env/test-core/plan/test-core.cue
+++ b/.dagger/env/test-core/plan/test-core.cue
@@ -1,7 +1,7 @@
 package testcore
 
 import (
-	"dagger.io/dagger"
+	"alpha.dagger.io/dagger"
 )
 
 name: dagger.#Input & {
diff --git a/cmd/dagger/cmd/doc.go b/cmd/dagger/cmd/doc.go
index 6174e4cf..33458255 100644
--- a/cmd/dagger/cmd/doc.go
+++ b/cmd/dagger/cmd/doc.go
@@ -337,7 +337,7 @@ func walkStdlib(ctx context.Context, output, format string) {
 			return nil
 		}
 
-		pkgName := fmt.Sprintf("dagger.io/%s", p)
+		pkgName := fmt.Sprintf("alpha.dagger.io/%s", p)
 		lg.Info().Str("package", pkgName).Str("format", format).Msg("generating doc")
 		val, err := loadCode(pkgName)
 		if err != nil {
diff --git a/cue.mod/pkg/dagger.io b/cue.mod/pkg/alpha.dagger.io
similarity index 100%
rename from cue.mod/pkg/dagger.io
rename to cue.mod/pkg/alpha.dagger.io
diff --git a/docs/learn/102-dev.md b/docs/learn/102-dev.md
index 8936fa8f..8ece8a12 100644
--- a/docs/learn/102-dev.md
+++ b/docs/learn/102-dev.md
@@ -136,7 +136,7 @@ Let's write the corresponding Cue code to a new file in our package:
 package multibucket
 
 import (
-    "dagger.io/dagger"
+    "alpha.dagger.io/dagger"
 )
 
 // Source code of the sample application
@@ -153,7 +153,7 @@ The second component of our plan is the Yarn package built from the app source c
 package multibucket
 
 import (
-    "dagger.io/js/yarn"
+    "alpha.dagger.io/js/yarn"
 )
 
 // Build the source code using Yarn
@@ -165,7 +165,7 @@ app: yarn.#Package & {
 Let's break it down:
 
 - `package multibucket`: this file is part of the multibucket package
-- `import ( "dagger.io/js/yarn" )`: import a package from the [Dagger Universe](../reference/universe/README.md).
+- `import ( "alpha.dagger.io/js/yarn" )`: import a package from the [Dagger Universe](../reference/universe/README.md).
 - `app: yarn.#Package`: apply the `#Package` definition at the key `app`
 - `&`: also merge the following values at the same key...
 - `{ source: src }`: set the key `app.source` to the value of `src`. This connects our 2 components, forming the first link in our DAG.
@@ -182,7 +182,7 @@ The third component of our plan is the Netlify site to which the app will be dep
 package multibucket
 
 import (
-    "dagger.io/netlify"
+    "alpha.dagger.io/netlify"
 )
 
 // Netlify site
diff --git a/docs/learn/107-kubernetes.md b/docs/learn/107-kubernetes.md
index f8a76595..c617340a 100644
--- a/docs/learn/107-kubernetes.md
+++ b/docs/learn/107-kubernetes.md
@@ -164,7 +164,7 @@ values={[
 package kube
 
 import (
-  "dagger.io/kubernetes"
+  "alpha.dagger.io/kubernetes"
 )
 
 // input: ~/.kube/config file used for deployment
@@ -190,8 +190,8 @@ deploy: kubernetes.#Resources & {
 package kube
 
 import (
-  "dagger.io/kubernetes"
-  "dagger.io/gcp/gke"
+  "alpha.dagger.io/kubernetes"
+  "alpha.dagger.io/gcp/gke"
 )
 
 // gkeConfig used for deployment
@@ -218,8 +218,8 @@ deploy: kubernetes.#Resources & {
 package kube
 
 import (
-  "dagger.io/kubernetes"
-  "dagger.io/aws/eks"
+  "alpha.dagger.io/kubernetes"
+  "alpha.dagger.io/aws/eks"
 )
 
 // eksConfig used for deployment
@@ -587,8 +587,8 @@ package kube
 import (
   "encoding/yaml"
 
-  "dagger.io/dagger"
-  "dagger.io/docker"
+  "alpha.dagger.io/dagger"
+  "alpha.dagger.io/docker"
 )
 
 // input: source code repository, must contain a Dockerfile
diff --git a/docs/learn/108-cloudformation.md b/docs/learn/108-cloudformation.md
index d6dcee62..416f01e2 100644
--- a/docs/learn/108-cloudformation.md
+++ b/docs/learn/108-cloudformation.md
@@ -168,7 +168,7 @@ Let's implement the first step, use the `aws.#Config` relay, and request its fir
 package cloudformation
 
 import (
-  "dagger.io/aws"
+  "alpha.dagger.io/aws"
 )
 
 // AWS account: credentials and region
@@ -226,10 +226,10 @@ Now that we have the `config` definition properly configured, let's modify the C
 package cloudformation
 
 import (
-  "dagger.io/aws"
-  "dagger.io/dagger"
-  "dagger.io/random"
-  "dagger.io/aws/cloudformation"
+  "alpha.dagger.io/aws"
+  "alpha.dagger.io/dagger"
+  "alpha.dagger.io/random"
+  "alpha.dagger.io/aws/cloudformation"
 )
 
 // AWS account: credentials and region
diff --git a/docs/reference/universe/alpine.md b/docs/reference/universe/alpine.md
index fb3bdd16..7c2e6df8 100644
--- a/docs/reference/universe/alpine.md
+++ b/docs/reference/universe/alpine.md
@@ -2,12 +2,12 @@
 sidebar_label: alpine
 ---
 
-# dagger.io/alpine
+# alpha.dagger.io/alpine
 
 Base package for Alpine Linux
 
 ```cue
-import "dagger.io/alpine"
+import "alpha.dagger.io/alpine"
 ```
 
 ## alpine.#Image
diff --git a/docs/reference/universe/aws/README.md b/docs/reference/universe/aws/README.md
index b0755acc..7484c97e 100644
--- a/docs/reference/universe/aws/README.md
+++ b/docs/reference/universe/aws/README.md
@@ -2,12 +2,12 @@
 sidebar_label: aws
 ---
 
-# dagger.io/aws
+# alpha.dagger.io/aws
 
 AWS base package
 
 ```cue
-import "dagger.io/aws"
+import "alpha.dagger.io/aws"
 ```
 
 ## aws.#CLI
diff --git a/docs/reference/universe/aws/cloudformation.md b/docs/reference/universe/aws/cloudformation.md
index 2dbf7dd9..8528db70 100644
--- a/docs/reference/universe/aws/cloudformation.md
+++ b/docs/reference/universe/aws/cloudformation.md
@@ -2,12 +2,12 @@
 sidebar_label: cloudformation
 ---
 
-# dagger.io/aws/cloudformation
+# alpha.dagger.io/aws/cloudformation
 
 AWS CloudFormation
 
 ```cue
-import "dagger.io/aws/cloudformation"
+import "alpha.dagger.io/aws/cloudformation"
 ```
 
 ## cloudformation.#Stack
diff --git a/docs/reference/universe/aws/ecr.md b/docs/reference/universe/aws/ecr.md
index a77199d8..c45d1824 100644
--- a/docs/reference/universe/aws/ecr.md
+++ b/docs/reference/universe/aws/ecr.md
@@ -2,12 +2,12 @@
 sidebar_label: ecr
 ---
 
-# dagger.io/aws/ecr
+# alpha.dagger.io/aws/ecr
 
 Amazon Elastic Container Registry (ECR)
 
 ```cue
-import "dagger.io/aws/ecr"
+import "alpha.dagger.io/aws/ecr"
 ```
 
 ## ecr.#Credentials
diff --git a/docs/reference/universe/aws/ecs.md b/docs/reference/universe/aws/ecs.md
index 578d36ed..e80cafa8 100644
--- a/docs/reference/universe/aws/ecs.md
+++ b/docs/reference/universe/aws/ecs.md
@@ -2,10 +2,10 @@
 sidebar_label: ecs
 ---
 
-# dagger.io/aws/ecs
+# alpha.dagger.io/aws/ecs
 
 AWS Elastic Container Service (ECS)
 
 ```cue
-import "dagger.io/aws/ecs"
+import "alpha.dagger.io/aws/ecs"
 ```
diff --git a/docs/reference/universe/aws/eks.md b/docs/reference/universe/aws/eks.md
index 1f47ce10..7d445769 100644
--- a/docs/reference/universe/aws/eks.md
+++ b/docs/reference/universe/aws/eks.md
@@ -2,12 +2,12 @@
 sidebar_label: eks
 ---
 
-# dagger.io/aws/eks
+# alpha.dagger.io/aws/eks
 
 AWS Elastic Kubernetes Service (EKS)
 
 ```cue
-import "dagger.io/aws/eks"
+import "alpha.dagger.io/aws/eks"
 ```
 
 ## eks.#KubeConfig
diff --git a/docs/reference/universe/aws/elb.md b/docs/reference/universe/aws/elb.md
index 91661c59..adf122a4 100644
--- a/docs/reference/universe/aws/elb.md
+++ b/docs/reference/universe/aws/elb.md
@@ -2,12 +2,12 @@
 sidebar_label: elb
 ---
 
-# dagger.io/aws/elb
+# alpha.dagger.io/aws/elb
 
 AWS Elastic Load Balancer (ELBv2)
 
 ```cue
-import "dagger.io/aws/elb"
+import "alpha.dagger.io/aws/elb"
 ```
 
 ## elb.#RandomRulePriority
diff --git a/docs/reference/universe/aws/rds.md b/docs/reference/universe/aws/rds.md
index 735fb50f..9c5735f1 100644
--- a/docs/reference/universe/aws/rds.md
+++ b/docs/reference/universe/aws/rds.md
@@ -2,12 +2,12 @@
 sidebar_label: rds
 ---
 
-# dagger.io/aws/rds
+# alpha.dagger.io/aws/rds
 
 AWS Relational Database Service (RDS)
 
 ```cue
-import "dagger.io/aws/rds"
+import "alpha.dagger.io/aws/rds"
 ```
 
 ## rds.#Database
diff --git a/docs/reference/universe/aws/s3.md b/docs/reference/universe/aws/s3.md
index 69c5533c..ca7b54dd 100644
--- a/docs/reference/universe/aws/s3.md
+++ b/docs/reference/universe/aws/s3.md
@@ -2,12 +2,12 @@
 sidebar_label: s3
 ---
 
-# dagger.io/aws/s3
+# alpha.dagger.io/aws/s3
 
 AWS Simple Storage Service
 
 ```cue
-import "dagger.io/aws/s3"
+import "alpha.dagger.io/aws/s3"
 ```
 
 ## s3.#Object
diff --git a/docs/reference/universe/dagger/README.md b/docs/reference/universe/dagger/README.md
index b25bc93c..60694e45 100644
--- a/docs/reference/universe/dagger/README.md
+++ b/docs/reference/universe/dagger/README.md
@@ -2,12 +2,12 @@
 sidebar_label: dagger
 ---
 
-# dagger.io/dagger
+# alpha.dagger.io/dagger
 
 Dagger core types
 
 ```cue
-import "dagger.io/dagger"
+import "alpha.dagger.io/dagger"
 ```
 
 ## dagger.#Secret
diff --git a/docs/reference/universe/dagger/op.md b/docs/reference/universe/dagger/op.md
index ddff6a1e..a862f0d8 100644
--- a/docs/reference/universe/dagger/op.md
+++ b/docs/reference/universe/dagger/op.md
@@ -2,12 +2,12 @@
 sidebar_label: op
 ---
 
-# dagger.io/dagger/op
+# alpha.dagger.io/dagger/op
 
 op: low-level operations for Dagger processing pipelines
 
 ```cue
-import "dagger.io/dagger/op"
+import "alpha.dagger.io/dagger/op"
 ```
 
 ## op.#Copy
diff --git a/docs/reference/universe/docker.md b/docs/reference/universe/docker.md
index 7812a1ec..f146a5a4 100644
--- a/docs/reference/universe/docker.md
+++ b/docs/reference/universe/docker.md
@@ -2,12 +2,12 @@
 sidebar_label: docker
 ---
 
-# dagger.io/docker
+# alpha.dagger.io/docker
 
 Docker container operations
 
 ```cue
-import "dagger.io/docker"
+import "alpha.dagger.io/docker"
 ```
 
 ## docker.#Build
diff --git a/docs/reference/universe/gcp/README.md b/docs/reference/universe/gcp/README.md
index f2ded155..1b42d71e 100644
--- a/docs/reference/universe/gcp/README.md
+++ b/docs/reference/universe/gcp/README.md
@@ -2,12 +2,12 @@
 sidebar_label: gcp
 ---
 
-# dagger.io/gcp
+# alpha.dagger.io/gcp
 
 Google Cloud Platform
 
 ```cue
-import "dagger.io/gcp"
+import "alpha.dagger.io/gcp"
 ```
 
 ## gcp.#Config
diff --git a/docs/reference/universe/gcp/gcr.md b/docs/reference/universe/gcp/gcr.md
index 9bfc320d..169fcdbc 100644
--- a/docs/reference/universe/gcp/gcr.md
+++ b/docs/reference/universe/gcp/gcr.md
@@ -2,12 +2,12 @@
 sidebar_label: gcr
 ---
 
-# dagger.io/gcp/gcr
+# alpha.dagger.io/gcp/gcr
 
 Google Container Registry
 
 ```cue
-import "dagger.io/gcp/gcr"
+import "alpha.dagger.io/gcp/gcr"
 ```
 
 ## gcr.#Credentials
diff --git a/docs/reference/universe/gcp/gke.md b/docs/reference/universe/gcp/gke.md
index 781db781..a01c1fd6 100644
--- a/docs/reference/universe/gcp/gke.md
+++ b/docs/reference/universe/gcp/gke.md
@@ -2,12 +2,12 @@
 sidebar_label: gke
 ---
 
-# dagger.io/gcp/gke
+# alpha.dagger.io/gcp/gke
 
 Google Kubernetes Engine
 
 ```cue
-import "dagger.io/gcp/gke"
+import "alpha.dagger.io/gcp/gke"
 ```
 
 ## gke.#KubeConfig
diff --git a/docs/reference/universe/git.md b/docs/reference/universe/git.md
index 95cdcaa5..956a4125 100644
--- a/docs/reference/universe/git.md
+++ b/docs/reference/universe/git.md
@@ -2,12 +2,12 @@
 sidebar_label: git
 ---
 
-# dagger.io/git
+# alpha.dagger.io/git
 
 Git operations
 
 ```cue
-import "dagger.io/git"
+import "alpha.dagger.io/git"
 ```
 
 ## git.#CurrentBranch
diff --git a/docs/reference/universe/go.md b/docs/reference/universe/go.md
index adb63faf..e464fe5c 100644
--- a/docs/reference/universe/go.md
+++ b/docs/reference/universe/go.md
@@ -2,12 +2,12 @@
 sidebar_label: go
 ---
 
-# dagger.io/go
+# alpha.dagger.io/go
 
 Go build operations
 
 ```cue
-import "dagger.io/go"
+import "alpha.dagger.io/go"
 ```
 
 ## go.#Build
diff --git a/docs/reference/universe/io.md b/docs/reference/universe/io.md
index ada35879..84bf2422 100644
--- a/docs/reference/universe/io.md
+++ b/docs/reference/universe/io.md
@@ -2,12 +2,12 @@
 sidebar_label: io
 ---
 
-# dagger.io/io
+# alpha.dagger.io/io
 
 IO operations
 
 ```cue
-import "dagger.io/io"
+import "alpha.dagger.io/io"
 ```
 
 ## io.#Dir
diff --git a/docs/reference/universe/js/yarn.md b/docs/reference/universe/js/yarn.md
index 1c4a2c35..322847d0 100644
--- a/docs/reference/universe/js/yarn.md
+++ b/docs/reference/universe/js/yarn.md
@@ -2,12 +2,12 @@
 sidebar_label: yarn
 ---
 
-# dagger.io/js/yarn
+# alpha.dagger.io/js/yarn
 
 Yarn is a package manager for Javascript applications
 
 ```cue
-import "dagger.io/js/yarn"
+import "alpha.dagger.io/js/yarn"
 ```
 
 ## yarn.#Package
diff --git a/docs/reference/universe/kubernetes/README.md b/docs/reference/universe/kubernetes/README.md
index d89aad60..9b4f102c 100644
--- a/docs/reference/universe/kubernetes/README.md
+++ b/docs/reference/universe/kubernetes/README.md
@@ -2,12 +2,12 @@
 sidebar_label: kubernetes
 ---
 
-# dagger.io/kubernetes
+# alpha.dagger.io/kubernetes
 
 Kubernetes client operations
 
 ```cue
-import "dagger.io/kubernetes"
+import "alpha.dagger.io/kubernetes"
 ```
 
 ## kubernetes.#Kubectl
diff --git a/docs/reference/universe/kubernetes/helm.md b/docs/reference/universe/kubernetes/helm.md
index 52a5e127..39c6c010 100644
--- a/docs/reference/universe/kubernetes/helm.md
+++ b/docs/reference/universe/kubernetes/helm.md
@@ -2,12 +2,12 @@
 sidebar_label: helm
 ---
 
-# dagger.io/kubernetes/helm
+# alpha.dagger.io/kubernetes/helm
 
 Helm package manager
 
 ```cue
-import "dagger.io/kubernetes/helm"
+import "alpha.dagger.io/kubernetes/helm"
 ```
 
 ## helm.#Chart
diff --git a/docs/reference/universe/kubernetes/kustomize.md b/docs/reference/universe/kubernetes/kustomize.md
index d7e8efe1..188b999b 100644
--- a/docs/reference/universe/kubernetes/kustomize.md
+++ b/docs/reference/universe/kubernetes/kustomize.md
@@ -2,12 +2,12 @@
 sidebar_label: kustomize
 ---
 
-# dagger.io/kubernetes/kustomize
+# alpha.dagger.io/kubernetes/kustomize
 
 Kustomize config management
 
 ```cue
-import "dagger.io/kubernetes/kustomize"
+import "alpha.dagger.io/kubernetes/kustomize"
 ```
 
 ## kustomize.#Kustomization
diff --git a/docs/reference/universe/netlify.md b/docs/reference/universe/netlify.md
index 823a429c..ccd4a68f 100644
--- a/docs/reference/universe/netlify.md
+++ b/docs/reference/universe/netlify.md
@@ -2,12 +2,12 @@
 sidebar_label: netlify
 ---
 
-# dagger.io/netlify
+# alpha.dagger.io/netlify
 
 Netlify client operations
 
 ```cue
-import "dagger.io/netlify"
+import "alpha.dagger.io/netlify"
 ```
 
 ## netlify.#Account
diff --git a/docs/reference/universe/os.md b/docs/reference/universe/os.md
index c1e7ef37..9a37823b 100644
--- a/docs/reference/universe/os.md
+++ b/docs/reference/universe/os.md
@@ -2,12 +2,12 @@
 sidebar_label: os
 ---
 
-# dagger.io/os
+# alpha.dagger.io/os
 
 OS operations
 
 ```cue
-import "dagger.io/os"
+import "alpha.dagger.io/os"
 ```
 
 ## os.#Container
diff --git a/docs/reference/universe/random.md b/docs/reference/universe/random.md
index b5f6a347..e80e4ed0 100644
--- a/docs/reference/universe/random.md
+++ b/docs/reference/universe/random.md
@@ -2,12 +2,12 @@
 sidebar_label: random
 ---
 
-# dagger.io/random
+# alpha.dagger.io/random
 
 Random generation utilities
 
 ```cue
-import "dagger.io/random"
+import "alpha.dagger.io/random"
 ```
 
 ## random.#String
diff --git a/docs/reference/universe/terraform.md b/docs/reference/universe/terraform.md
index 7188503f..0318ba15 100644
--- a/docs/reference/universe/terraform.md
+++ b/docs/reference/universe/terraform.md
@@ -2,12 +2,12 @@
 sidebar_label: terraform
 ---
 
-# dagger.io/terraform
+# alpha.dagger.io/terraform
 
 Terraform operations
 
 ```cue
-import "dagger.io/terraform"
+import "alpha.dagger.io/terraform"
 ```
 
 ## terraform.#Configuration
diff --git a/stdlib/.dagger/env/alpine/plan/alpine.cue b/stdlib/.dagger/env/alpine/plan/alpine.cue
index b5dc0b9d..f60b58aa 100644
--- a/stdlib/.dagger/env/alpine/plan/alpine.cue
+++ b/stdlib/.dagger/env/alpine/plan/alpine.cue
@@ -1,8 +1,8 @@
 package alpine
 
 import (
-	"dagger.io/alpine"
-	"dagger.io/dagger/op"
+	"alpha.dagger.io/alpine"
+	"alpha.dagger.io/dagger/op"
 )
 
 TestImageVersion: {
diff --git a/stdlib/.dagger/env/aws-ecr/plan/ecr.cue b/stdlib/.dagger/env/aws-ecr/plan/ecr.cue
index 2e094048..1b56f90b 100644
--- a/stdlib/.dagger/env/aws-ecr/plan/ecr.cue
+++ b/stdlib/.dagger/env/aws-ecr/plan/ecr.cue
@@ -1,10 +1,10 @@
 package main
 
 import (
-	"dagger.io/aws"
-	"dagger.io/aws/ecr"
-	"dagger.io/dagger/op"
-	"dagger.io/random"
+	"alpha.dagger.io/aws"
+	"alpha.dagger.io/aws/ecr"
+	"alpha.dagger.io/dagger/op"
+	"alpha.dagger.io/random"
 )
 
 TestConfig: awsConfig: aws.#Config & {
diff --git a/stdlib/.dagger/env/aws-eks/plan/eks.cue b/stdlib/.dagger/env/aws-eks/plan/eks.cue
index d0a92e9d..88406428 100644
--- a/stdlib/.dagger/env/aws-eks/plan/eks.cue
+++ b/stdlib/.dagger/env/aws-eks/plan/eks.cue
@@ -1,10 +1,10 @@
 package eks
 
 import (
-	"dagger.io/aws"
-	"dagger.io/aws/eks"
-	"dagger.io/kubernetes"
-	"dagger.io/dagger/op"
+	"alpha.dagger.io/aws"
+	"alpha.dagger.io/aws/eks"
+	"alpha.dagger.io/kubernetes"
+	"alpha.dagger.io/dagger/op"
 )
 
 TestConfig: awsConfig: aws.#Config & {
diff --git a/stdlib/.dagger/env/aws-s3/plan/s3.cue b/stdlib/.dagger/env/aws-s3/plan/s3.cue
index dfe20f5a..eb6f4914 100644
--- a/stdlib/.dagger/env/aws-s3/plan/s3.cue
+++ b/stdlib/.dagger/env/aws-s3/plan/s3.cue
@@ -1,9 +1,9 @@
 package s3
 
 import (
-	"dagger.io/dagger"
-	"dagger.io/aws"
-	"dagger.io/aws/s3"
+	"alpha.dagger.io/dagger"
+	"alpha.dagger.io/aws"
+	"alpha.dagger.io/aws/s3"
 )
 
 TestConfig: awsConfig: aws.#Config & {
diff --git a/stdlib/.dagger/env/aws-s3/plan/verify.cue b/stdlib/.dagger/env/aws-s3/plan/verify.cue
index d1fb596b..7588ba5a 100644
--- a/stdlib/.dagger/env/aws-s3/plan/verify.cue
+++ b/stdlib/.dagger/env/aws-s3/plan/verify.cue
@@ -1,9 +1,9 @@
 package s3
 
 import (
-	"dagger.io/aws"
-	"dagger.io/alpine"
-	"dagger.io/dagger/op"
+	"alpha.dagger.io/aws"
+	"alpha.dagger.io/alpine"
+	"alpha.dagger.io/dagger/op"
 )
 
 #List: {
diff --git a/stdlib/.dagger/env/docker-build/plan/dockerfile.cue b/stdlib/.dagger/env/docker-build/plan/dockerfile.cue
index 70b021f2..05792f57 100644
--- a/stdlib/.dagger/env/docker-build/plan/dockerfile.cue
+++ b/stdlib/.dagger/env/docker-build/plan/dockerfile.cue
@@ -1,9 +1,9 @@
 package docker
 
 import (
-	"dagger.io/dagger"
-	"dagger.io/dagger/op"
-	"dagger.io/docker"
+	"alpha.dagger.io/dagger"
+	"alpha.dagger.io/dagger/op"
+	"alpha.dagger.io/docker"
 )
 
 TestSourceBuild: dagger.#Artifact @dagger(input)
diff --git a/stdlib/.dagger/env/docker-command-ssh-key-passphrase/plan/command.cue b/stdlib/.dagger/env/docker-command-ssh-key-passphrase/plan/command.cue
index a4532607..82a06439 100644
--- a/stdlib/.dagger/env/docker-command-ssh-key-passphrase/plan/command.cue
+++ b/stdlib/.dagger/env/docker-command-ssh-key-passphrase/plan/command.cue
@@ -1,8 +1,8 @@
 package docker
 
 import (
-	"dagger.io/dagger"
-	"dagger.io/docker"
+	"alpha.dagger.io/dagger"
+	"alpha.dagger.io/docker"
 )
 
 TestConfig: {
diff --git a/stdlib/.dagger/env/docker-command-ssh-wrong-key-passphrase/plan/command.cue b/stdlib/.dagger/env/docker-command-ssh-wrong-key-passphrase/plan/command.cue
index 91f82ea4..8ffeda9b 100644
--- a/stdlib/.dagger/env/docker-command-ssh-wrong-key-passphrase/plan/command.cue
+++ b/stdlib/.dagger/env/docker-command-ssh-wrong-key-passphrase/plan/command.cue
@@ -1,8 +1,8 @@
 package docker
 
 import (
-	"dagger.io/dagger"
-	"dagger.io/docker"
+	"alpha.dagger.io/dagger"
+	"alpha.dagger.io/docker"
 )
 
 TestConfig: {
diff --git a/stdlib/.dagger/env/docker-command-ssh/plan/command.cue b/stdlib/.dagger/env/docker-command-ssh/plan/command.cue
index 1767faac..e87e9b3f 100644
--- a/stdlib/.dagger/env/docker-command-ssh/plan/command.cue
+++ b/stdlib/.dagger/env/docker-command-ssh/plan/command.cue
@@ -1,8 +1,8 @@
 package docker
 
 import (
-	"dagger.io/dagger"
-	"dagger.io/docker"
+	"alpha.dagger.io/dagger"
+	"alpha.dagger.io/docker"
 )
 
 TestConfig: {
diff --git a/stdlib/.dagger/env/docker-run-local/plan/local.cue b/stdlib/.dagger/env/docker-run-local/plan/local.cue
index 2c3505f4..36d4c36e 100644
--- a/stdlib/.dagger/env/docker-run-local/plan/local.cue
+++ b/stdlib/.dagger/env/docker-run-local/plan/local.cue
@@ -1,8 +1,8 @@
 package main
 
 import (
-	"dagger.io/docker"
-	"dagger.io/random"
+	"alpha.dagger.io/docker"
+	"alpha.dagger.io/random"
 )
 
 suffix: random.#String & {
diff --git a/stdlib/.dagger/env/docker-run-ssh/plan/simple.cue b/stdlib/.dagger/env/docker-run-ssh/plan/simple.cue
index 17b7499f..38246a1a 100644
--- a/stdlib/.dagger/env/docker-run-ssh/plan/simple.cue
+++ b/stdlib/.dagger/env/docker-run-ssh/plan/simple.cue
@@ -1,9 +1,9 @@
 package main
 
 import (
-	"dagger.io/docker"
-	"dagger.io/dagger"
-	"dagger.io/random"
+	"alpha.dagger.io/docker"
+	"alpha.dagger.io/dagger"
+	"alpha.dagger.io/random"
 )
 
 TestConfig: {
diff --git a/stdlib/.dagger/env/git/plan/git.cue b/stdlib/.dagger/env/git/plan/git.cue
index 67ae3cff..59e65d47 100644
--- a/stdlib/.dagger/env/git/plan/git.cue
+++ b/stdlib/.dagger/env/git/plan/git.cue
@@ -3,10 +3,10 @@ package git
 import (
 	"strings"
 
-	"dagger.io/git"
-	"dagger.io/alpine"
-	"dagger.io/os"
-	"dagger.io/dagger/op"
+	"alpha.dagger.io/git"
+	"alpha.dagger.io/alpine"
+	"alpha.dagger.io/os"
+	"alpha.dagger.io/dagger/op"
 )
 
 repo: git.#Repository & {
diff --git a/stdlib/.dagger/env/go/plan/go.cue b/stdlib/.dagger/env/go/plan/go.cue
index dc7ecc0d..4df695d3 100644
--- a/stdlib/.dagger/env/go/plan/go.cue
+++ b/stdlib/.dagger/env/go/plan/go.cue
@@ -1,10 +1,10 @@
 package go
 
 import (
-	"dagger.io/dagger"
-	"dagger.io/go"
-	"dagger.io/alpine"
-	"dagger.io/dagger/op"
+	"alpha.dagger.io/dagger"
+	"alpha.dagger.io/go"
+	"alpha.dagger.io/alpine"
+	"alpha.dagger.io/dagger/op"
 )
 
 TestData: dagger.#Artifact @dagger(input)
diff --git a/stdlib/.dagger/env/google-gcr/plan/gcr.cue b/stdlib/.dagger/env/google-gcr/plan/gcr.cue
index e5adc2b6..9c2f3add 100644
--- a/stdlib/.dagger/env/google-gcr/plan/gcr.cue
+++ b/stdlib/.dagger/env/google-gcr/plan/gcr.cue
@@ -1,10 +1,10 @@
 package main
 
 import (
-	"dagger.io/gcp"
-	"dagger.io/gcp/gcr"
-	"dagger.io/dagger/op"
-	"dagger.io/random"
+	"alpha.dagger.io/gcp"
+	"alpha.dagger.io/gcp/gcr"
+	"alpha.dagger.io/dagger/op"
+	"alpha.dagger.io/random"
 )
 
 TestConfig: gcpConfig: gcp.#Config
diff --git a/stdlib/.dagger/env/google-gke/plan/gke.cue b/stdlib/.dagger/env/google-gke/plan/gke.cue
index 450f72d0..2f1c6a9e 100644
--- a/stdlib/.dagger/env/google-gke/plan/gke.cue
+++ b/stdlib/.dagger/env/google-gke/plan/gke.cue
@@ -1,10 +1,10 @@
 package gke
 
 import (
-	"dagger.io/gcp"
-	"dagger.io/gcp/gke"
-	"dagger.io/kubernetes"
-	"dagger.io/dagger/op"
+	"alpha.dagger.io/gcp"
+	"alpha.dagger.io/gcp/gke"
+	"alpha.dagger.io/kubernetes"
+	"alpha.dagger.io/dagger/op"
 )
 
 TestConfig: gcpConfig: gcp.#Config
diff --git a/stdlib/.dagger/env/js-yarn/plan/yarn.cue b/stdlib/.dagger/env/js-yarn/plan/yarn.cue
index 15539e9e..69ddeb7d 100644
--- a/stdlib/.dagger/env/js-yarn/plan/yarn.cue
+++ b/stdlib/.dagger/env/js-yarn/plan/yarn.cue
@@ -1,10 +1,10 @@
 package react
 
 import (
-	"dagger.io/dagger"
-	"dagger.io/js/yarn"
-	"dagger.io/alpine"
-	"dagger.io/os"
+	"alpha.dagger.io/dagger"
+	"alpha.dagger.io/js/yarn"
+	"alpha.dagger.io/alpine"
+	"alpha.dagger.io/os"
 )
 
 TestData: dagger.#Artifact
diff --git a/stdlib/.dagger/env/kubernetes-deployment/plan/kubernetes.cue b/stdlib/.dagger/env/kubernetes-deployment/plan/kubernetes.cue
index 35f7caee..11cb8158 100644
--- a/stdlib/.dagger/env/kubernetes-deployment/plan/kubernetes.cue
+++ b/stdlib/.dagger/env/kubernetes-deployment/plan/kubernetes.cue
@@ -2,8 +2,8 @@ package main
 
 import (
 	"encoding/yaml"
-	"dagger.io/kubernetes"
-	"dagger.io/random"
+	"alpha.dagger.io/kubernetes"
+	"alpha.dagger.io/random"
 )
 
 // We assume that a kinD cluster is running locally
diff --git a/stdlib/.dagger/env/kubernetes-deployment/plan/verify.cue b/stdlib/.dagger/env/kubernetes-deployment/plan/verify.cue
index 0150b5f3..99c3377a 100644
--- a/stdlib/.dagger/env/kubernetes-deployment/plan/verify.cue
+++ b/stdlib/.dagger/env/kubernetes-deployment/plan/verify.cue
@@ -1,8 +1,8 @@
 package main
 
 import (
-	"dagger.io/dagger/op"
-	"dagger.io/kubernetes"
+	"alpha.dagger.io/dagger/op"
+	"alpha.dagger.io/kubernetes"
 )
 
 #VerifyApply: {
diff --git a/stdlib/.dagger/env/kubernetes-helm/plan/helm.cue b/stdlib/.dagger/env/kubernetes-helm/plan/helm.cue
index ab06eb13..67735840 100644
--- a/stdlib/.dagger/env/kubernetes-helm/plan/helm.cue
+++ b/stdlib/.dagger/env/kubernetes-helm/plan/helm.cue
@@ -1,9 +1,9 @@
 package main
 
 import (
-	"dagger.io/kubernetes/helm"
-	"dagger.io/random"
-	"dagger.io/dagger"
+	"alpha.dagger.io/kubernetes/helm"
+	"alpha.dagger.io/random"
+	"alpha.dagger.io/dagger"
 )
 
 // We assume that a kinD cluster is running locally
diff --git a/stdlib/.dagger/env/kubernetes-helm/plan/verify.cue b/stdlib/.dagger/env/kubernetes-helm/plan/verify.cue
index 581c1121..3acf6921 100644
--- a/stdlib/.dagger/env/kubernetes-helm/plan/verify.cue
+++ b/stdlib/.dagger/env/kubernetes-helm/plan/verify.cue
@@ -1,8 +1,8 @@
 package main
 
 import (
-	"dagger.io/dagger/op"
-	"dagger.io/kubernetes"
+	"alpha.dagger.io/dagger/op"
+	"alpha.dagger.io/kubernetes"
 )
 
 #VerifyHelm: {
diff --git a/stdlib/.dagger/env/kubernetes-kustomize/plan/kustomize.cue b/stdlib/.dagger/env/kubernetes-kustomize/plan/kustomize.cue
index 2ebe0682..5daa3652 100644
--- a/stdlib/.dagger/env/kubernetes-kustomize/plan/kustomize.cue
+++ b/stdlib/.dagger/env/kubernetes-kustomize/plan/kustomize.cue
@@ -2,8 +2,8 @@ package main
 
 import (
 	"encoding/yaml"
-	"dagger.io/dagger"
-	"dagger.io/kubernetes/kustomize"
+	"alpha.dagger.io/dagger"
+	"alpha.dagger.io/kubernetes/kustomize"
 )
 
 TestKustomize: {
diff --git a/stdlib/.dagger/env/kubernetes-kustomize/plan/verify.cue b/stdlib/.dagger/env/kubernetes-kustomize/plan/verify.cue
index 48075413..1e86276c 100644
--- a/stdlib/.dagger/env/kubernetes-kustomize/plan/verify.cue
+++ b/stdlib/.dagger/env/kubernetes-kustomize/plan/verify.cue
@@ -1,9 +1,9 @@
 package main
 
 import (
-	"dagger.io/dagger/op"
-	"dagger.io/dagger"
-	"dagger.io/alpine"
+	"alpha.dagger.io/dagger/op"
+	"alpha.dagger.io/dagger"
+	"alpha.dagger.io/alpine"
 )
 
 #VerifyKustomize: {
diff --git a/stdlib/.dagger/env/netlify/plan/netlify.cue b/stdlib/.dagger/env/netlify/plan/netlify.cue
index 68b35b9c..f506518f 100644
--- a/stdlib/.dagger/env/netlify/plan/netlify.cue
+++ b/stdlib/.dagger/env/netlify/plan/netlify.cue
@@ -1,10 +1,10 @@
 package main
 
 import (
-	"dagger.io/dagger/op"
-	"dagger.io/alpine"
-	"dagger.io/netlify"
-	"dagger.io/random"
+	"alpha.dagger.io/dagger/op"
+	"alpha.dagger.io/alpine"
+	"alpha.dagger.io/netlify"
+	"alpha.dagger.io/random"
 )
 
 TestNetlify: {
diff --git a/stdlib/.dagger/env/os-container/plan/main.cue b/stdlib/.dagger/env/os-container/plan/main.cue
index 5b6ebafe..af2836b4 100644
--- a/stdlib/.dagger/env/os-container/plan/main.cue
+++ b/stdlib/.dagger/env/os-container/plan/main.cue
@@ -1,8 +1,8 @@
 package main
 
 import (
-	"dagger.io/dagger"
-	"dagger.io/os"
+	"alpha.dagger.io/dagger"
+	"alpha.dagger.io/os"
 )
 
 // Test secret mount
diff --git a/stdlib/.dagger/env/os/plan/main.cue b/stdlib/.dagger/env/os/plan/main.cue
index bb6a6c7b..9ff1528b 100644
--- a/stdlib/.dagger/env/os/plan/main.cue
+++ b/stdlib/.dagger/env/os/plan/main.cue
@@ -1,8 +1,8 @@
 package main
 
 import (
-	"dagger.io/os"
-	"dagger.io/alpine"
+	"alpha.dagger.io/os"
+	"alpha.dagger.io/alpine"
 )
 
 // Write a file to an empty dir
diff --git a/stdlib/.dagger/env/sanity-check/.gitignore b/stdlib/.dagger/env/sanity-check/.gitignore
new file mode 100644
index 00000000..01ec19b0
--- /dev/null
+++ b/stdlib/.dagger/env/sanity-check/.gitignore
@@ -0,0 +1,2 @@
+# dagger state
+state/**
diff --git a/stdlib/.dagger/env/sanity-check/plan/main.cue b/stdlib/.dagger/env/sanity-check/plan/main.cue
new file mode 100644
index 00000000..cf0de8ba
--- /dev/null
+++ b/stdlib/.dagger/env/sanity-check/plan/main.cue
@@ -0,0 +1,67 @@
+package main
+
+import (
+	"alpha.dagger.io/dagger"
+	"alpha.dagger.io/os"
+	"alpha.dagger.io/alpine"
+)
+
+// Assert that there are no errors
+err: ""
+
+// Directory containing universe packages (./universe/ in dagger repo)
+universe: dagger.#Input & dagger.#Artifact
+
+ctr: #CueCLI & {
+	vendor: "alpha.dagger.io": universe
+	command: """
+		(
+		find . -name '*.cue' -print0 | xargs -0iX dirname X | sort -u | {
+
+			while read -r dir; do
+				echo "--- $dir"
+				cue eval "$dir" >/dev/null
+			done
+		} > /out 2>/err
+		) || true
+		"""
+}
+
+result: (os.#File & {
+		from: ctr.ctr
+		path: "/out"
+}).contents @dagger(output)
+
+err: (os.#File & {
+		from: ctr.ctr
+		path: "/err"
+}).contents @dagger(output)
+
+#CueCLI: {
+	command: string
+	vendor: [name=string]: dagger.#Artifact
+
+	ctr: os.#Container & {
+		image: alpine.#Image & {
+			package: {
+				curl: true
+				tar:  true
+			}
+		}
+		setup: [
+			"""
+				set -e
+				cd $(mktemp -d)
+				curl -L https://github.com/cuelang/cue/releases/download/v0.4.0/cue_v0.4.0_linux_amd64.tar.gz -o cue.tgz
+				tar zxvf cue.tgz
+				cp cue /usr/local/bin/cue
+				rm -fr ./*
+				""",
+		]
+		for name, dir in vendor {
+			mount: "/ctx/cue.mod/pkg/\(name)": from: dir
+		}
+		dir:       "/ctx"
+		"command": command
+	}
+}
diff --git a/stdlib/.dagger/env/sanity-check/values.yaml b/stdlib/.dagger/env/sanity-check/values.yaml
new file mode 100644
index 00000000..4f546458
--- /dev/null
+++ b/stdlib/.dagger/env/sanity-check/values.yaml
@@ -0,0 +1,27 @@
+plan:
+    module: .dagger/env/sanity-check/plan
+name: sanity-check
+inputs:
+    universe:
+        dir:
+            path: .
+sops:
+    kms: []
+    gcp_kms: []
+    azure_kv: []
+    hc_vault: []
+    age:
+        - recipient: age1gxwmtwahzwdmrskhf90ppwlnze30lgpm056kuesrxzeuyclrwvpsupwtpk
+          enc: |
+            -----BEGIN AGE ENCRYPTED FILE-----
+            YWdlLWVuY3J5cHRpb24ub3JnL3YxCi0+IFgyNTUxOSBtMjhYeVhscGxYWVg1RHZ2
+            bjlWcnFuQ1hvVGVvZGRDYUlpeWpYYUZnWW5nCndObmdoSkpZZXI4MytwNUtsMkwr
+            ZkY4a01iN1dSL05KaGExSk0rWFpjNzQKLS0tIGF0eVRXalloUERaU2lhZ2gwcG1G
+            RE1BR1ZvSlpRWnpZVERFQlB5ckhPYk0KMm8XjFKgcjWaXh9F542NXyv9dBZQdZJC
+            rn5YittfEOwRkrlqBCVwPtU+nhE5oDxnt9a0n8JMUgvB0Nnd6tgP+A==
+            -----END AGE ENCRYPTED FILE-----
+    lastmodified: "2021-06-24T15:27:51Z"
+    mac: ENC[AES256_GCM,data:SDJPXr1NjGSOcHMLmKrzJ9XkFjfXOg7g5pdgXS3fQ4sSALVBqhHSfHJnH2m4NVSJPyOd35ia2/BivTWTGw1oguovLSfSvlptPUDqbwsXQoB2NEFcAJ6eJeDyz8Bx98OrBliyJaVOVYzF4y5dWwW2BGuevW097PbY/Sv3p6x8fyY=,iv:IftNBSOvEn3nGRQlD47At8pvundsXdk68yz+cWct/tU=,tag:XUPxsP39xSjPgvIZNBV09w==,type:str]
+    pgp: []
+    encrypted_suffix: secret
+    version: 3.7.1
diff --git a/stdlib/.dagger/env/terraform/plan/terraform.cue b/stdlib/.dagger/env/terraform/plan/terraform.cue
index e34ea405..ad3d78f7 100644
--- a/stdlib/.dagger/env/terraform/plan/terraform.cue
+++ b/stdlib/.dagger/env/terraform/plan/terraform.cue
@@ -1,10 +1,10 @@
 package terraform
 
 import (
-	"dagger.io/dagger"
-	"dagger.io/dagger/op"
-	"dagger.io/alpine"
-	"dagger.io/terraform"
+	"alpha.dagger.io/dagger"
+	"alpha.dagger.io/dagger/op"
+	"alpha.dagger.io/alpine"
+	"alpha.dagger.io/terraform"
 )
 
 TestData: dagger.#Artifact @dagger(input)
diff --git a/stdlib/alpine/alpine.cue b/stdlib/alpine/alpine.cue
index 4e9735ac..b7b76a30 100644
--- a/stdlib/alpine/alpine.cue
+++ b/stdlib/alpine/alpine.cue
@@ -2,7 +2,7 @@
 package alpine
 
 import (
-	"dagger.io/dagger/op"
+	"alpha.dagger.io/dagger/op"
 )
 
 // Default Alpine version
diff --git a/stdlib/aws/aws.cue b/stdlib/aws/aws.cue
index 91648e54..2e0a3ba5 100644
--- a/stdlib/aws/aws.cue
+++ b/stdlib/aws/aws.cue
@@ -2,9 +2,9 @@
 package aws
 
 import (
-	"dagger.io/dagger"
-	"dagger.io/dagger/op"
-	"dagger.io/alpine"
+	"alpha.dagger.io/dagger"
+	"alpha.dagger.io/dagger/op"
+	"alpha.dagger.io/alpine"
 )
 
 // AWS Config shared by all AWS packages
diff --git a/stdlib/aws/cloudformation/cloudformation.cue b/stdlib/aws/cloudformation/cloudformation.cue
index 5f55a0a2..50dad7f8 100644
--- a/stdlib/aws/cloudformation/cloudformation.cue
+++ b/stdlib/aws/cloudformation/cloudformation.cue
@@ -4,8 +4,8 @@ package cloudformation
 import (
 	"encoding/json"
 
-	"dagger.io/dagger/op"
-	"dagger.io/aws"
+	"alpha.dagger.io/dagger/op"
+	"alpha.dagger.io/aws"
 )
 
 // AWS CloudFormation Stack
diff --git a/stdlib/aws/ecr/ecr.cue b/stdlib/aws/ecr/ecr.cue
index 4739af01..b6f77594 100644
--- a/stdlib/aws/ecr/ecr.cue
+++ b/stdlib/aws/ecr/ecr.cue
@@ -2,8 +2,8 @@
 package ecr
 
 import (
-	"dagger.io/aws"
-	"dagger.io/os"
+	"alpha.dagger.io/aws"
+	"alpha.dagger.io/os"
 )
 
 // Convert ECR credentials to Docker Login format
diff --git a/stdlib/aws/ecs/run-task.cue b/stdlib/aws/ecs/run-task.cue
index 06b848de..33ac7159 100644
--- a/stdlib/aws/ecs/run-task.cue
+++ b/stdlib/aws/ecs/run-task.cue
@@ -2,7 +2,7 @@
 package ecs
 
 import (
-	"dagger.io/aws"
+	"alpha.dagger.io/aws"
 )
 
 // Task implements ecs run-task for running a single container on ECS
diff --git a/stdlib/aws/eks/eks.cue b/stdlib/aws/eks/eks.cue
index 0ac2e0b1..db13fb7c 100644
--- a/stdlib/aws/eks/eks.cue
+++ b/stdlib/aws/eks/eks.cue
@@ -2,8 +2,8 @@
 package eks
 
 import (
-	"dagger.io/dagger/op"
-	"dagger.io/aws"
+	"alpha.dagger.io/dagger/op"
+	"alpha.dagger.io/aws"
 )
 
 // KubeConfig config outputs a valid kube-auth-config for kubectl client
diff --git a/stdlib/aws/elb/elb.cue b/stdlib/aws/elb/elb.cue
index 5923e75e..8d38c87e 100644
--- a/stdlib/aws/elb/elb.cue
+++ b/stdlib/aws/elb/elb.cue
@@ -2,8 +2,8 @@
 package elb
 
 import (
-	"dagger.io/dagger/op"
-	"dagger.io/aws"
+	"alpha.dagger.io/dagger/op"
+	"alpha.dagger.io/aws"
 )
 
 // Returns an unused rule priority (randomized in available range)
diff --git a/stdlib/aws/rds/rds.cue b/stdlib/aws/rds/rds.cue
index 31b429aa..02cedf31 100644
--- a/stdlib/aws/rds/rds.cue
+++ b/stdlib/aws/rds/rds.cue
@@ -2,9 +2,9 @@
 package rds
 
 import (
-	"dagger.io/dagger/op"
+	"alpha.dagger.io/dagger/op"
 	"encoding/json"
-	"dagger.io/aws"
+	"alpha.dagger.io/aws"
 )
 
 // Creates a new Database on an existing RDS Instance
diff --git a/stdlib/aws/s3/s3.cue b/stdlib/aws/s3/s3.cue
index 5749aff5..06772388 100644
--- a/stdlib/aws/s3/s3.cue
+++ b/stdlib/aws/s3/s3.cue
@@ -2,9 +2,9 @@
 package s3
 
 import (
-	"dagger.io/dagger"
-	"dagger.io/dagger/op"
-	"dagger.io/aws"
+	"alpha.dagger.io/dagger"
+	"alpha.dagger.io/dagger/op"
+	"alpha.dagger.io/aws"
 )
 
 // S3 Bucket object(s) sync
diff --git a/stdlib/dagger/dagger.cue b/stdlib/dagger/dagger.cue
index 28b67351..9731bfb1 100644
--- a/stdlib/dagger/dagger.cue
+++ b/stdlib/dagger/dagger.cue
@@ -2,7 +2,7 @@
 package dagger
 
 import (
-	"dagger.io/dagger/op"
+	"alpha.dagger.io/dagger/op"
 )
 
 // An artifact such as source code checkout, container image, binary archive...
diff --git a/stdlib/docker/command.cue b/stdlib/docker/command.cue
index d9352e6b..e2be5084 100644
--- a/stdlib/docker/command.cue
+++ b/stdlib/docker/command.cue
@@ -3,9 +3,9 @@ package docker
 import (
 	"strconv"
 
-	"dagger.io/alpine"
-	"dagger.io/dagger"
-	"dagger.io/dagger/op"
+	"alpha.dagger.io/alpine"
+	"alpha.dagger.io/dagger"
+	"alpha.dagger.io/dagger/op"
 )
 
 // A container image that can run any docker command
diff --git a/stdlib/docker/docker.cue b/stdlib/docker/docker.cue
index 642d1a59..4ddc4475 100644
--- a/stdlib/docker/docker.cue
+++ b/stdlib/docker/docker.cue
@@ -2,8 +2,8 @@
 package docker
 
 import (
-	"dagger.io/dagger"
-	"dagger.io/dagger/op"
+	"alpha.dagger.io/dagger"
+	"alpha.dagger.io/dagger/op"
 )
 
 // Build a Docker image from source, using included Dockerfile
diff --git a/stdlib/gcp/gcloud.cue b/stdlib/gcp/gcloud.cue
index c8792ba2..bbbbd5f5 100644
--- a/stdlib/gcp/gcloud.cue
+++ b/stdlib/gcp/gcloud.cue
@@ -1,8 +1,8 @@
 package gcp
 
 import (
-	"dagger.io/dagger/op"
-	"dagger.io/alpine"
+	"alpha.dagger.io/dagger/op"
+	"alpha.dagger.io/alpine"
 )
 
 // Re-usable gcloud component
diff --git a/stdlib/gcp/gcp.cue b/stdlib/gcp/gcp.cue
index ea0e055e..18e71dff 100644
--- a/stdlib/gcp/gcp.cue
+++ b/stdlib/gcp/gcp.cue
@@ -2,7 +2,7 @@
 package gcp
 
 import (
-	"dagger.io/dagger"
+	"alpha.dagger.io/dagger"
 )
 
 // Base Google Cloud Config
diff --git a/stdlib/gcp/gcr/gcr.cue b/stdlib/gcp/gcr/gcr.cue
index 5d32fa72..deafcfaf 100644
--- a/stdlib/gcp/gcr/gcr.cue
+++ b/stdlib/gcp/gcr/gcr.cue
@@ -2,8 +2,8 @@
 package gcr
 
 import (
-	"dagger.io/dagger/op"
-	"dagger.io/gcp"
+	"alpha.dagger.io/dagger/op"
+	"alpha.dagger.io/gcp"
 )
 
 // Credentials retriever for GCR
diff --git a/stdlib/gcp/gke/gke.cue b/stdlib/gcp/gke/gke.cue
index 6ded54f0..640fd62e 100644
--- a/stdlib/gcp/gke/gke.cue
+++ b/stdlib/gcp/gke/gke.cue
@@ -2,8 +2,8 @@
 package gke
 
 import (
-	"dagger.io/dagger/op"
-	"dagger.io/gcp"
+	"alpha.dagger.io/dagger/op"
+	"alpha.dagger.io/gcp"
 )
 
 // KubeConfig config outputs a valid kube-auth-config for kubectl client
diff --git a/stdlib/git/git.cue b/stdlib/git/git.cue
index 8148e144..82d58b5e 100644
--- a/stdlib/git/git.cue
+++ b/stdlib/git/git.cue
@@ -2,9 +2,9 @@
 package git
 
 import (
-	"dagger.io/dagger"
-	"dagger.io/dagger/op"
-	"dagger.io/alpine"
+	"alpha.dagger.io/dagger"
+	"alpha.dagger.io/dagger/op"
+	"alpha.dagger.io/alpine"
 )
 
 // A git repository
diff --git a/stdlib/go/go.cue b/stdlib/go/go.cue
index f0de9b20..423dd947 100644
--- a/stdlib/go/go.cue
+++ b/stdlib/go/go.cue
@@ -2,11 +2,11 @@
 package go
 
 import (
-	"dagger.io/dagger"
-	"dagger.io/dagger/op"
-	"dagger.io/docker"
+	"alpha.dagger.io/dagger"
+	"alpha.dagger.io/dagger/op"
+	"alpha.dagger.io/docker"
 
-	"dagger.io/os"
+	"alpha.dagger.io/os"
 )
 
 // A standalone go environment
diff --git a/stdlib/js/yarn/yarn.cue b/stdlib/js/yarn/yarn.cue
index f9471215..7f90dbd3 100644
--- a/stdlib/js/yarn/yarn.cue
+++ b/stdlib/js/yarn/yarn.cue
@@ -4,9 +4,9 @@ package yarn
 import (
 	"strings"
 
-	"dagger.io/dagger"
-	"dagger.io/alpine"
-	"dagger.io/os"
+	"alpha.dagger.io/dagger"
+	"alpha.dagger.io/alpine"
+	"alpha.dagger.io/os"
 )
 
 // A Yarn package
diff --git a/stdlib/kubernetes/helm/helm.cue b/stdlib/kubernetes/helm/helm.cue
index 0544ef92..bf0bca88 100644
--- a/stdlib/kubernetes/helm/helm.cue
+++ b/stdlib/kubernetes/helm/helm.cue
@@ -4,9 +4,9 @@ package helm
 import (
 	"strconv"
 
-	"dagger.io/dagger"
-	"dagger.io/dagger/op"
-	"dagger.io/kubernetes"
+	"alpha.dagger.io/dagger"
+	"alpha.dagger.io/dagger/op"
+	"alpha.dagger.io/kubernetes"
 )
 
 // Install a Helm chart
diff --git a/stdlib/kubernetes/kubernetes.cue b/stdlib/kubernetes/kubernetes.cue
index 1a6a902c..f98838ab 100644
--- a/stdlib/kubernetes/kubernetes.cue
+++ b/stdlib/kubernetes/kubernetes.cue
@@ -2,9 +2,9 @@
 package kubernetes
 
 import (
-	"dagger.io/dagger/op"
-	"dagger.io/dagger"
-	"dagger.io/alpine"
+	"alpha.dagger.io/dagger/op"
+	"alpha.dagger.io/dagger"
+	"alpha.dagger.io/alpine"
 )
 
 // Kubectl client
diff --git a/stdlib/kubernetes/kustomize/kustomization.cue b/stdlib/kubernetes/kustomize/kustomization.cue
index 4a8b323d..60cf3dd7 100644
--- a/stdlib/kubernetes/kustomize/kustomization.cue
+++ b/stdlib/kubernetes/kustomize/kustomization.cue
@@ -2,9 +2,9 @@
 package kustomize
 
 import (
-	"dagger.io/dagger/op"
-	"dagger.io/dagger"
-	"dagger.io/alpine"
+	"alpha.dagger.io/dagger/op"
+	"alpha.dagger.io/dagger"
+	"alpha.dagger.io/alpine"
 )
 
 #Kustomization: {
diff --git a/stdlib/netlify/netlify.cue b/stdlib/netlify/netlify.cue
index d1c3d293..482d43e5 100644
--- a/stdlib/netlify/netlify.cue
+++ b/stdlib/netlify/netlify.cue
@@ -2,9 +2,9 @@
 package netlify
 
 import (
-	"dagger.io/dagger"
-	"dagger.io/alpine"
-	"dagger.io/os"
+	"alpha.dagger.io/dagger"
+	"alpha.dagger.io/alpine"
+	"alpha.dagger.io/os"
 )
 
 // Netlify account credentials
diff --git a/stdlib/os/container.cue b/stdlib/os/container.cue
index 8e8e1e8c..ede2ccbc 100644
--- a/stdlib/os/container.cue
+++ b/stdlib/os/container.cue
@@ -3,10 +3,10 @@ package os
 import (
 	"strings"
 
-	"dagger.io/dagger"
-	"dagger.io/dagger/op"
+	"alpha.dagger.io/dagger"
+	"alpha.dagger.io/dagger/op"
 
-	"dagger.io/alpine"
+	"alpha.dagger.io/alpine"
 )
 
 // Default image for basic use cases
diff --git a/stdlib/os/dir.cue b/stdlib/os/dir.cue
index ed47aaa4..c5afe16b 100644
--- a/stdlib/os/dir.cue
+++ b/stdlib/os/dir.cue
@@ -1,8 +1,8 @@
 package os
 
 import (
-	"dagger.io/dagger"
-	"dagger.io/dagger/op"
+	"alpha.dagger.io/dagger"
+	"alpha.dagger.io/dagger/op"
 )
 
 #Dir: {
diff --git a/stdlib/os/file.cue b/stdlib/os/file.cue
index 40ae675d..6a4fb49e 100644
--- a/stdlib/os/file.cue
+++ b/stdlib/os/file.cue
@@ -2,8 +2,8 @@
 package os
 
 import (
-	"dagger.io/dagger"
-	"dagger.io/dagger/op"
+	"alpha.dagger.io/dagger"
+	"alpha.dagger.io/dagger/op"
 )
 
 // Built-in file implementation, using buildkit
diff --git a/stdlib/random/string.cue b/stdlib/random/string.cue
index a15891e1..e84d809f 100644
--- a/stdlib/random/string.cue
+++ b/stdlib/random/string.cue
@@ -4,8 +4,8 @@ package random
 import (
 	"strconv"
 
-	"dagger.io/alpine"
-	"dagger.io/dagger/op"
+	"alpha.dagger.io/alpine"
+	"alpha.dagger.io/dagger/op"
 )
 
 // Generate a random string
diff --git a/stdlib/stdlib.go b/stdlib/stdlib.go
index 48aa9907..b2ac9019 100644
--- a/stdlib/stdlib.go
+++ b/stdlib/stdlib.go
@@ -10,6 +10,6 @@ var (
 	//go:embed **/*.cue **/*/*.cue
 	FS embed.FS
 
-	PackageName = "dagger.io"
+	PackageName = "alpha.dagger.io"
 	Path        = path.Join("cue.mod", "pkg", PackageName)
 )
diff --git a/stdlib/terraform/terraform.cue b/stdlib/terraform/terraform.cue
index 703a7113..1e6ab939 100644
--- a/stdlib/terraform/terraform.cue
+++ b/stdlib/terraform/terraform.cue
@@ -4,8 +4,8 @@ package terraform
 import (
 	"encoding/json"
 
-	"dagger.io/dagger"
-	"dagger.io/dagger/op"
+	"alpha.dagger.io/dagger"
+	"alpha.dagger.io/dagger/op"
 )
 
 // Terraform configuration
diff --git a/stdlib/universe.bats b/stdlib/universe.bats
index 55be3aa8..90548f1b 100644
--- a/stdlib/universe.bats
+++ b/stdlib/universe.bats
@@ -4,6 +4,10 @@ setup() {
     common_setup
 }
 
+@test "cue-sanity-check" {
+    dagger -e sanity-check up
+}
+
 
 @test "os" {
     dagger -e os up
diff --git a/tests/cli.bats b/tests/cli.bats
index 8fcc086e..044377fa 100644
--- a/tests/cli.bats
+++ b/tests/cli.bats
@@ -69,8 +69,8 @@ setup() {
 
     ln -s "$TESTDIR"/cli/packages "$DAGGER_WORKSPACE"/plan
 
-    "$DAGGER" new "a" --module "$DAGGER_WORKSPACE"/plan --package dagger.io/test/a
-    "$DAGGER" new "b" --module "$DAGGER_WORKSPACE"/plan --package dagger.io/test/b
+    "$DAGGER" new "a" --module "$DAGGER_WORKSPACE"/plan --package alpha.dagger.io/test/a
+    "$DAGGER" new "b" --module "$DAGGER_WORKSPACE"/plan --package alpha.dagger.io/test/b
 
     "$DAGGER" up -e "a"
     "$DAGGER" up -e "b"
diff --git a/tests/cli/input/artifact/main.cue b/tests/cli/input/artifact/main.cue
index aa8f8737..e9423a0a 100644
--- a/tests/cli/input/artifact/main.cue
+++ b/tests/cli/input/artifact/main.cue
@@ -1,8 +1,8 @@
 package testing
 
 import (
-	"dagger.io/dagger/op"
-	"dagger.io/dagger"
+	"alpha.dagger.io/dagger/op"
+	"alpha.dagger.io/dagger"
 )
 
 source: dagger.#Artifact
diff --git a/tests/cli/input/ignore/main.cue b/tests/cli/input/ignore/main.cue
index 8cd23563..f08eb7d7 100644
--- a/tests/cli/input/ignore/main.cue
+++ b/tests/cli/input/ignore/main.cue
@@ -1,8 +1,8 @@
 package testing
 
 import (
-	"dagger.io/dagger/op"
-	"dagger.io/dagger"
+	"alpha.dagger.io/dagger/op"
+	"alpha.dagger.io/dagger"
 )
 
 source: dagger.#Artifact
diff --git a/tests/cli/input/list/main.cue b/tests/cli/input/list/main.cue
index 794c07be..01ec455c 100644
--- a/tests/cli/input/list/main.cue
+++ b/tests/cli/input/list/main.cue
@@ -1,8 +1,8 @@
 package main
 
 import (
-	"dagger.io/dagger"
-	"dagger.io/aws"
+	"alpha.dagger.io/dagger"
+	"alpha.dagger.io/aws"
 )
 
 awsConfig: aws.#Config & {
diff --git a/tests/cli/output/list/main.cue b/tests/cli/output/list/main.cue
index a19ae14d..95cabedc 100644
--- a/tests/cli/output/list/main.cue
+++ b/tests/cli/output/list/main.cue
@@ -1,7 +1,7 @@
 package main
 
 import (
-	"dagger.io/dagger"
+	"alpha.dagger.io/dagger"
 )
 
 #A: {
diff --git a/tests/cli/packages/a/main.cue b/tests/cli/packages/a/main.cue
index 665d2d5e..01440d18 100644
--- a/tests/cli/packages/a/main.cue
+++ b/tests/cli/packages/a/main.cue
@@ -1,6 +1,6 @@
 package a
 
-import "dagger.io/dagger/op"
+import "alpha.dagger.io/dagger/op"
 
 exp: {
 	string
diff --git a/tests/cli/packages/b/main.cue b/tests/cli/packages/b/main.cue
index a0e5806b..a8c337ff 100644
--- a/tests/cli/packages/b/main.cue
+++ b/tests/cli/packages/b/main.cue
@@ -1,6 +1,6 @@
 package b
 
-import "dagger.io/dagger/op"
+import "alpha.dagger.io/dagger/op"
 
 exp: {
 	string
diff --git a/tests/cli/packages/cue.mod/module.cue b/tests/cli/packages/cue.mod/module.cue
index 8f2d4fdb..c0728a77 100644
--- a/tests/cli/packages/cue.mod/module.cue
+++ b/tests/cli/packages/cue.mod/module.cue
@@ -1 +1 @@
-module: "dagger.io/test"
+module: "alpha.dagger.io/test"
diff --git a/tests/cli/simple/main.cue b/tests/cli/simple/main.cue
index 42621fef..672beced 100644
--- a/tests/cli/simple/main.cue
+++ b/tests/cli/simple/main.cue
@@ -1,6 +1,6 @@
 package testing
 
-import "dagger.io/dagger/op"
+import "alpha.dagger.io/dagger/op"
 
 foo: "value"
 bar: "another value"
diff --git a/tests/compute/dockersocket/main.cue b/tests/compute/dockersocket/main.cue
index 7b97f7b2..a554623c 100644
--- a/tests/compute/dockersocket/main.cue
+++ b/tests/compute/dockersocket/main.cue
@@ -1,8 +1,8 @@
 package main
 
 import (
-	"dagger.io/dagger/op"
-	"dagger.io/docker"
+	"alpha.dagger.io/dagger/op"
+	"alpha.dagger.io/docker"
 )
 
 TestDockerSocket: #up: [
diff --git a/tests/compute/exclude/.dagger/env/default/plan/main.cue b/tests/compute/exclude/.dagger/env/default/plan/main.cue
index b86eecb5..682e4316 100644
--- a/tests/compute/exclude/.dagger/env/default/plan/main.cue
+++ b/tests/compute/exclude/.dagger/env/default/plan/main.cue
@@ -1,9 +1,9 @@
 package testing
 
 import (
-	"dagger.io/alpine"
-	"dagger.io/dagger"
-	"dagger.io/dagger/op"
+	"alpha.dagger.io/alpine"
+	"alpha.dagger.io/dagger"
+	"alpha.dagger.io/dagger/op"
 )
 
 TestData: dagger.#Artifact
diff --git a/tests/compute/secrets/invalid/env/env.cue b/tests/compute/secrets/invalid/env/env.cue
index bfded599..bfe94379 100644
--- a/tests/compute/secrets/invalid/env/env.cue
+++ b/tests/compute/secrets/invalid/env/env.cue
@@ -1,9 +1,9 @@
 package testing
 
 import (
-	"dagger.io/dagger"
-	"dagger.io/dagger/op"
-	"dagger.io/alpine"
+	"alpha.dagger.io/dagger"
+	"alpha.dagger.io/dagger/op"
+	"alpha.dagger.io/alpine"
 )
 
 mySecret: dagger.#Secret
diff --git a/tests/compute/secrets/invalid/string/string.cue b/tests/compute/secrets/invalid/string/string.cue
index 2015a1d7..aa194dee 100644
--- a/tests/compute/secrets/invalid/string/string.cue
+++ b/tests/compute/secrets/invalid/string/string.cue
@@ -1,8 +1,8 @@
 package testing
 
 import (
-	"dagger.io/dagger/op"
-	"dagger.io/alpine"
+	"alpha.dagger.io/dagger/op"
+	"alpha.dagger.io/alpine"
 )
 
 mySecret: dagger.#Secret
diff --git a/tests/compute/secrets/simple/simple.cue b/tests/compute/secrets/simple/simple.cue
index 4d1f5ca6..0b8d3d7f 100644
--- a/tests/compute/secrets/simple/simple.cue
+++ b/tests/compute/secrets/simple/simple.cue
@@ -1,9 +1,9 @@
 package testing
 
 import (
-	"dagger.io/dagger"
-	"dagger.io/dagger/op"
-	"dagger.io/alpine"
+	"alpha.dagger.io/dagger"
+	"alpha.dagger.io/dagger/op"
+	"alpha.dagger.io/alpine"
 )
 
 mySecret: dagger.#Secret
diff --git a/tests/compute/success/exec-nocache/main.cue b/tests/compute/success/exec-nocache/main.cue
index fb9eef6b..6609cdbd 100644
--- a/tests/compute/success/exec-nocache/main.cue
+++ b/tests/compute/success/exec-nocache/main.cue
@@ -1,8 +1,8 @@
 package main
 
 import (
-	"dagger.io/alpine"
-	"dagger.io/dagger/op"
+	"alpha.dagger.io/alpine"
+	"alpha.dagger.io/dagger/op"
 )
 
 rand: {
diff --git a/tests/ops/copy/invalid/cache/main.cue b/tests/ops/copy/invalid/cache/main.cue
index 266abddb..8fef0a56 100644
--- a/tests/ops/copy/invalid/cache/main.cue
+++ b/tests/ops/copy/invalid/cache/main.cue
@@ -1,6 +1,6 @@
 package testing
 
-import "dagger.io/dagger/op"
+import "alpha.dagger.io/dagger/op"
 
 TestCacheCopyLoadAlpine: {
 	string
diff --git a/tests/ops/copy/valid/component/main.cue b/tests/ops/copy/valid/component/main.cue
index 239233fd..6af0f5d6 100644
--- a/tests/ops/copy/valid/component/main.cue
+++ b/tests/ops/copy/valid/component/main.cue
@@ -1,6 +1,6 @@
 package testing
 
-import "dagger.io/dagger/op"
+import "alpha.dagger.io/dagger/op"
 
 TestComponent: #up: [
 	op.#FetchContainer & {
diff --git a/tests/ops/copy/valid/script/main.cue b/tests/ops/copy/valid/script/main.cue
index e51539e2..fe85ac53 100644
--- a/tests/ops/copy/valid/script/main.cue
+++ b/tests/ops/copy/valid/script/main.cue
@@ -1,6 +1,6 @@
 package testing
 
-import "dagger.io/dagger/op"
+import "alpha.dagger.io/dagger/op"
 
 TestScriptCopy: {
 	string
diff --git a/tests/ops/dockerbuild/main.cue b/tests/ops/dockerbuild/main.cue
index 4e966f72..3f1fb7f0 100644
--- a/tests/ops/dockerbuild/main.cue
+++ b/tests/ops/dockerbuild/main.cue
@@ -1,8 +1,8 @@
 package testing
 
 import (
-	"dagger.io/dagger"
-	"dagger.io/dagger/op"
+	"alpha.dagger.io/dagger"
+	"alpha.dagger.io/dagger/op"
 )
 
 // Set to `--input-dir=./tests/dockerbuild/testdata`
diff --git a/tests/ops/exec/always/main.cue b/tests/ops/exec/always/main.cue
index dad2f1b4..6305ee94 100644
--- a/tests/ops/exec/always/main.cue
+++ b/tests/ops/exec/always/main.cue
@@ -1,6 +1,6 @@
 package testing
 
-import "dagger.io/dagger/op"
+import "alpha.dagger.io/dagger/op"
 
 #up: [
 	op.#FetchContainer & {
diff --git a/tests/ops/exec/dir/doesnotexist/main.cue b/tests/ops/exec/dir/doesnotexist/main.cue
index adcb9f80..d96a40be 100644
--- a/tests/ops/exec/dir/doesnotexist/main.cue
+++ b/tests/ops/exec/dir/doesnotexist/main.cue
@@ -1,6 +1,6 @@
 package testing
 
-import "dagger.io/dagger/op"
+import "alpha.dagger.io/dagger/op"
 
 #up: [
 	op.#FetchContainer & {
diff --git a/tests/ops/exec/dir/exist/main.cue b/tests/ops/exec/dir/exist/main.cue
index 28e74fa2..26bed476 100644
--- a/tests/ops/exec/dir/exist/main.cue
+++ b/tests/ops/exec/dir/exist/main.cue
@@ -1,6 +1,6 @@
 package testing
 
-import "dagger.io/dagger/op"
+import "alpha.dagger.io/dagger/op"
 
 #up: [
 	op.#FetchContainer & {
diff --git a/tests/ops/exec/env/invalid/main.cue b/tests/ops/exec/env/invalid/main.cue
index e9c5a331..6b79d5e4 100644
--- a/tests/ops/exec/env/invalid/main.cue
+++ b/tests/ops/exec/env/invalid/main.cue
@@ -1,6 +1,6 @@
 package testing
 
-import "dagger.io/dagger/op"
+import "alpha.dagger.io/dagger/op"
 
 #up: [
 	op.#FetchContainer & {
diff --git a/tests/ops/exec/env/overlay/main.cue b/tests/ops/exec/env/overlay/main.cue
index 35e8bfc3..92367318 100644
--- a/tests/ops/exec/env/overlay/main.cue
+++ b/tests/ops/exec/env/overlay/main.cue
@@ -1,6 +1,6 @@
 package testing
 
-import "dagger.io/dagger/op"
+import "alpha.dagger.io/dagger/op"
 
 bar: string
 
diff --git a/tests/ops/exec/env/valid/main.cue b/tests/ops/exec/env/valid/main.cue
index b378e4c1..a6af1699 100644
--- a/tests/ops/exec/env/valid/main.cue
+++ b/tests/ops/exec/env/valid/main.cue
@@ -1,6 +1,6 @@
 package testing
 
-import "dagger.io/dagger/op"
+import "alpha.dagger.io/dagger/op"
 
 #up: [
 	op.#FetchContainer & {
diff --git a/tests/ops/exec/error/main.cue b/tests/ops/exec/error/main.cue
index 8347c5ae..4fa7b8ee 100644
--- a/tests/ops/exec/error/main.cue
+++ b/tests/ops/exec/error/main.cue
@@ -1,6 +1,6 @@
 package testing
 
-import "dagger.io/dagger/op"
+import "alpha.dagger.io/dagger/op"
 
 #up: [
 	op.#FetchContainer & {
diff --git a/tests/ops/exec/exit_code/main.cue b/tests/ops/exec/exit_code/main.cue
index d83a1e77..23a6a8a0 100644
--- a/tests/ops/exec/exit_code/main.cue
+++ b/tests/ops/exec/exit_code/main.cue
@@ -1,6 +1,6 @@
 package testing
 
-import "dagger.io/dagger/op"
+import "alpha.dagger.io/dagger/op"
 
 #up: [
 	op.#FetchContainer & {
diff --git a/tests/ops/exec/invalid/main.cue b/tests/ops/exec/invalid/main.cue
index e1feea27..8a271fcd 100644
--- a/tests/ops/exec/invalid/main.cue
+++ b/tests/ops/exec/invalid/main.cue
@@ -1,6 +1,6 @@
 package testing
 
-import "dagger.io/dagger/op"
+import "alpha.dagger.io/dagger/op"
 
 #up: [
 	op.#FetchContainer & {
diff --git a/tests/ops/exec/simple/main.cue b/tests/ops/exec/simple/main.cue
index 4ec86863..bf9c9400 100644
--- a/tests/ops/exec/simple/main.cue
+++ b/tests/ops/exec/simple/main.cue
@@ -1,6 +1,6 @@
 package testing
 
-import "dagger.io/dagger/op"
+import "alpha.dagger.io/dagger/op"
 
 #up: [
 	op.#FetchContainer & {
diff --git a/tests/ops/exec/undefined/non_concrete_not_referenced/main.cue b/tests/ops/exec/undefined/non_concrete_not_referenced/main.cue
index 85b6a817..ad4952b8 100644
--- a/tests/ops/exec/undefined/non_concrete_not_referenced/main.cue
+++ b/tests/ops/exec/undefined/non_concrete_not_referenced/main.cue
@@ -1,6 +1,6 @@
 package testing
 
-import "dagger.io/dagger/op"
+import "alpha.dagger.io/dagger/op"
 
 hello: "world"
 bar:   string
diff --git a/tests/ops/exec/undefined/non_concrete_referenced/main.cue b/tests/ops/exec/undefined/non_concrete_referenced/main.cue
index 3a1e8796..62c9a255 100644
--- a/tests/ops/exec/undefined/non_concrete_referenced/main.cue
+++ b/tests/ops/exec/undefined/non_concrete_referenced/main.cue
@@ -1,6 +1,6 @@
 package testing
 
-import "dagger.io/dagger/op"
+import "alpha.dagger.io/dagger/op"
 
 hello: "world"
 bar:   string
diff --git a/tests/ops/exec/undefined/with_pkg_def/cue.mod/module.cue b/tests/ops/exec/undefined/with_pkg_def/cue.mod/module.cue
index 38b913a1..7e830608 100644
--- a/tests/ops/exec/undefined/with_pkg_def/cue.mod/module.cue
+++ b/tests/ops/exec/undefined/with_pkg_def/cue.mod/module.cue
@@ -1 +1 @@
-module: "dagger.io/testing"
+module: "alpha.dagger.io/testing"
diff --git a/tests/ops/exec/undefined/with_pkg_def/cue.mod/pkg/dagger.io/def/main.cue b/tests/ops/exec/undefined/with_pkg_def/cue.mod/pkg/alpha.dagger.io/def/main.cue
similarity index 100%
rename from tests/ops/exec/undefined/with_pkg_def/cue.mod/pkg/dagger.io/def/main.cue
rename to tests/ops/exec/undefined/with_pkg_def/cue.mod/pkg/alpha.dagger.io/def/main.cue
diff --git a/tests/ops/exec/undefined/with_pkg_def/main.cue b/tests/ops/exec/undefined/with_pkg_def/main.cue
index cd8a98b5..50d175a9 100644
--- a/tests/ops/exec/undefined/with_pkg_def/main.cue
+++ b/tests/ops/exec/undefined/with_pkg_def/main.cue
@@ -1,8 +1,8 @@
 package testing
 
 import (
-	"dagger.io/dagger/op"
-	"dagger.io/def"
+	"alpha.dagger.io/dagger/op"
+	"alpha.dagger.io/def"
 )
 
 #up: [
diff --git a/tests/ops/exec/undefined/with_pkg_mandatory/cue.mod/module.cue b/tests/ops/exec/undefined/with_pkg_mandatory/cue.mod/module.cue
index 38b913a1..7e830608 100644
--- a/tests/ops/exec/undefined/with_pkg_mandatory/cue.mod/module.cue
+++ b/tests/ops/exec/undefined/with_pkg_mandatory/cue.mod/module.cue
@@ -1 +1 @@
-module: "dagger.io/testing"
+module: "alpha.dagger.io/testing"
diff --git a/tests/ops/exec/undefined/with_pkg_mandatory/cue.mod/pkg/dagger.io/nonoptional/main.cue b/tests/ops/exec/undefined/with_pkg_mandatory/cue.mod/pkg/alpha.dagger.io/nonoptional/main.cue
similarity index 100%
rename from tests/ops/exec/undefined/with_pkg_mandatory/cue.mod/pkg/dagger.io/nonoptional/main.cue
rename to tests/ops/exec/undefined/with_pkg_mandatory/cue.mod/pkg/alpha.dagger.io/nonoptional/main.cue
diff --git a/tests/ops/exec/undefined/with_pkg_mandatory/main.cue b/tests/ops/exec/undefined/with_pkg_mandatory/main.cue
index e6673db4..e2421bd1 100644
--- a/tests/ops/exec/undefined/with_pkg_mandatory/main.cue
+++ b/tests/ops/exec/undefined/with_pkg_mandatory/main.cue
@@ -1,8 +1,8 @@
 package testing
 
 import (
-	"dagger.io/nonoptional"
-	"dagger.io/dagger/op"
+	"alpha.dagger.io/nonoptional"
+	"alpha.dagger.io/dagger/op"
 )
 
 #up: [
diff --git a/tests/ops/exec/undefined/with_pkg_optional/cue.mod/module.cue b/tests/ops/exec/undefined/with_pkg_optional/cue.mod/module.cue
index 38b913a1..7e830608 100644
--- a/tests/ops/exec/undefined/with_pkg_optional/cue.mod/module.cue
+++ b/tests/ops/exec/undefined/with_pkg_optional/cue.mod/module.cue
@@ -1 +1 @@
-module: "dagger.io/testing"
+module: "alpha.dagger.io/testing"
diff --git a/tests/ops/exec/undefined/with_pkg_optional/cue.mod/pkg/dagger.io/optional/main.cue b/tests/ops/exec/undefined/with_pkg_optional/cue.mod/pkg/alpha.dagger.io/optional/main.cue
similarity index 100%
rename from tests/ops/exec/undefined/with_pkg_optional/cue.mod/pkg/dagger.io/optional/main.cue
rename to tests/ops/exec/undefined/with_pkg_optional/cue.mod/pkg/alpha.dagger.io/optional/main.cue
diff --git a/tests/ops/exec/undefined/with_pkg_optional/main.cue b/tests/ops/exec/undefined/with_pkg_optional/main.cue
index 59569918..1dbc5f88 100644
--- a/tests/ops/exec/undefined/with_pkg_optional/main.cue
+++ b/tests/ops/exec/undefined/with_pkg_optional/main.cue
@@ -1,8 +1,8 @@
 package testing
 
 import (
-	"dagger.io/optional"
-	"dagger.io/dagger/op"
+	"alpha.dagger.io/optional"
+	"alpha.dagger.io/dagger/op"
 )
 
 #up: [
diff --git a/tests/ops/export/bool/main.cue b/tests/ops/export/bool/main.cue
index 604b033a..51327ec1 100644
--- a/tests/ops/export/bool/main.cue
+++ b/tests/ops/export/bool/main.cue
@@ -1,6 +1,6 @@
 package testing
 
-import "dagger.io/dagger/op"
+import "alpha.dagger.io/dagger/op"
 
 TestExportBool: {
 	bool
diff --git a/tests/ops/export/concurrency/main.cue b/tests/ops/export/concurrency/main.cue
index 36832bec..1711b810 100644
--- a/tests/ops/export/concurrency/main.cue
+++ b/tests/ops/export/concurrency/main.cue
@@ -1,6 +1,6 @@
 package testing
 
-import "dagger.io/dagger/op"
+import "alpha.dagger.io/dagger/op"
 
 TestExportConcurrency1: {
 	string
diff --git a/tests/ops/export/float/main.cue b/tests/ops/export/float/main.cue
index 5382a1eb..701700d2 100644
--- a/tests/ops/export/float/main.cue
+++ b/tests/ops/export/float/main.cue
@@ -1,6 +1,6 @@
 package testing
 
-import "dagger.io/dagger/op"
+import "alpha.dagger.io/dagger/op"
 
 TestExportFloat: {
 	float
diff --git a/tests/ops/export/invalid/format/main.cue b/tests/ops/export/invalid/format/main.cue
index d74428d7..0f61829e 100644
--- a/tests/ops/export/invalid/format/main.cue
+++ b/tests/ops/export/invalid/format/main.cue
@@ -1,6 +1,6 @@
 package testing
 
-import "dagger.io/dagger/op"
+import "alpha.dagger.io/dagger/op"
 
 TestExportInvalidFormat: {
 	string
diff --git a/tests/ops/export/invalid/validation/main.cue b/tests/ops/export/invalid/validation/main.cue
index 931bd291..f1ce3ee3 100644
--- a/tests/ops/export/invalid/validation/main.cue
+++ b/tests/ops/export/invalid/validation/main.cue
@@ -1,6 +1,6 @@
 package testing
 
-import "dagger.io/dagger/op"
+import "alpha.dagger.io/dagger/op"
 
 TestExportInvalidValidation: {
 	string
diff --git a/tests/ops/export/json/main.cue b/tests/ops/export/json/main.cue
index df3341d6..5ee735d8 100644
--- a/tests/ops/export/json/main.cue
+++ b/tests/ops/export/json/main.cue
@@ -1,6 +1,6 @@
 package testing
 
-import "dagger.io/dagger/op"
+import "alpha.dagger.io/dagger/op"
 
 TestExportScalar: {
 	bool
diff --git a/tests/ops/export/number/main.cue b/tests/ops/export/number/main.cue
index 5fa8c376..5aa6d567 100644
--- a/tests/ops/export/number/main.cue
+++ b/tests/ops/export/number/main.cue
@@ -1,6 +1,6 @@
 package testing
 
-import "dagger.io/dagger/op"
+import "alpha.dagger.io/dagger/op"
 
 TestExportNumber: {
 	number
diff --git a/tests/ops/export/string/main.cue b/tests/ops/export/string/main.cue
index b5bc85e8..a1ab778a 100644
--- a/tests/ops/export/string/main.cue
+++ b/tests/ops/export/string/main.cue
@@ -1,6 +1,6 @@
 package testing
 
-import "dagger.io/dagger/op"
+import "alpha.dagger.io/dagger/op"
 
 TestExportString: {
 	string
diff --git a/tests/ops/export/withvalidation/main.cue b/tests/ops/export/withvalidation/main.cue
index 6e604137..e1d6f935 100644
--- a/tests/ops/export/withvalidation/main.cue
+++ b/tests/ops/export/withvalidation/main.cue
@@ -1,6 +1,6 @@
 package testing
 
-import "dagger.io/dagger/op"
+import "alpha.dagger.io/dagger/op"
 
 TestExportStringValidation: {
 	string
diff --git a/tests/ops/export/yaml/main.cue b/tests/ops/export/yaml/main.cue
index 35e6b07c..fca9b8e5 100644
--- a/tests/ops/export/yaml/main.cue
+++ b/tests/ops/export/yaml/main.cue
@@ -1,6 +1,6 @@
 package testing
 
-import "dagger.io/dagger/op"
+import "alpha.dagger.io/dagger/op"
 
 TestExportScalar: {
 	bool
diff --git a/tests/ops/fetch-container/exist/main.cue b/tests/ops/fetch-container/exist/main.cue
index 58c592fd..f024ce12 100644
--- a/tests/ops/fetch-container/exist/main.cue
+++ b/tests/ops/fetch-container/exist/main.cue
@@ -1,6 +1,6 @@
 package testing
 
-import "dagger.io/dagger/op"
+import "alpha.dagger.io/dagger/op"
 
 TestBusybox1: #up: [
 	op.#FetchContainer & {
diff --git a/tests/ops/fetch-container/invalid/main.cue b/tests/ops/fetch-container/invalid/main.cue
index 0de73875..0bec0af0 100644
--- a/tests/ops/fetch-container/invalid/main.cue
+++ b/tests/ops/fetch-container/invalid/main.cue
@@ -1,6 +1,6 @@
 package testing
 
-import "dagger.io/dagger/op"
+import "alpha.dagger.io/dagger/op"
 
 #up: [
 	op.#FetchContainer & {
diff --git a/tests/ops/fetch-container/nonexistent/digest/main.cue b/tests/ops/fetch-container/nonexistent/digest/main.cue
index e41a0af6..ce559e4b 100644
--- a/tests/ops/fetch-container/nonexistent/digest/main.cue
+++ b/tests/ops/fetch-container/nonexistent/digest/main.cue
@@ -1,6 +1,6 @@
 package testing
 
-import "dagger.io/dagger/op"
+import "alpha.dagger.io/dagger/op"
 
 #up: [
 	op.#FetchContainer & {
diff --git a/tests/ops/fetch-container/nonexistent/image-with-valid-digest/main.cue b/tests/ops/fetch-container/nonexistent/image-with-valid-digest/main.cue
index 7eaa1468..8adf89a3 100644
--- a/tests/ops/fetch-container/nonexistent/image-with-valid-digest/main.cue
+++ b/tests/ops/fetch-container/nonexistent/image-with-valid-digest/main.cue
@@ -1,6 +1,6 @@
 package testing
 
-import "dagger.io/dagger/op"
+import "alpha.dagger.io/dagger/op"
 
 // XXX WATCHOUT
 // Once buildkit has pulled that digest, it will stay cached and happily succeed WHATEVER the image name then is
diff --git a/tests/ops/fetch-container/nonexistent/image/main.cue b/tests/ops/fetch-container/nonexistent/image/main.cue
index d32c238a..7216d7db 100644
--- a/tests/ops/fetch-container/nonexistent/image/main.cue
+++ b/tests/ops/fetch-container/nonexistent/image/main.cue
@@ -1,6 +1,6 @@
 package testing
 
-import "dagger.io/dagger/op"
+import "alpha.dagger.io/dagger/op"
 
 #up: [
 	op.#FetchContainer & {
diff --git a/tests/ops/fetch-container/nonexistent/tag/main.cue b/tests/ops/fetch-container/nonexistent/tag/main.cue
index cc24916a..f8a670b0 100644
--- a/tests/ops/fetch-container/nonexistent/tag/main.cue
+++ b/tests/ops/fetch-container/nonexistent/tag/main.cue
@@ -1,6 +1,6 @@
 package testing
 
-import "dagger.io/dagger/op"
+import "alpha.dagger.io/dagger/op"
 
 #up: [
 	op.#FetchContainer & {
diff --git a/tests/ops/fetch-git/exist/main.cue b/tests/ops/fetch-git/exist/main.cue
index dc8cf641..fc54f838 100644
--- a/tests/ops/fetch-git/exist/main.cue
+++ b/tests/ops/fetch-git/exist/main.cue
@@ -1,6 +1,6 @@
 package testing
 
-import "dagger.io/dagger/op"
+import "alpha.dagger.io/dagger/op"
 
 #up: [
 	op.#FetchGit & {
diff --git a/tests/ops/fetch-git/gitdir/main.cue b/tests/ops/fetch-git/gitdir/main.cue
index 61fc0607..0f58dcc9 100644
--- a/tests/ops/fetch-git/gitdir/main.cue
+++ b/tests/ops/fetch-git/gitdir/main.cue
@@ -1,6 +1,6 @@
 package testing
 
-import "dagger.io/dagger/op"
+import "alpha.dagger.io/dagger/op"
 
 repo1: #up: [
 	op.#FetchGit & {
diff --git a/tests/ops/fetch-git/invalid/main.cue b/tests/ops/fetch-git/invalid/main.cue
index dac913c6..8e653fbd 100644
--- a/tests/ops/fetch-git/invalid/main.cue
+++ b/tests/ops/fetch-git/invalid/main.cue
@@ -1,6 +1,6 @@
 package testing
 
-import "dagger.io/dagger/op"
+import "alpha.dagger.io/dagger/op"
 
 #up: [
 	op.#FetchGit & {
diff --git a/tests/ops/fetch-git/nonexistent/bork/main.cue b/tests/ops/fetch-git/nonexistent/bork/main.cue
index 9d8cab55..9d3d67d1 100644
--- a/tests/ops/fetch-git/nonexistent/bork/main.cue
+++ b/tests/ops/fetch-git/nonexistent/bork/main.cue
@@ -1,6 +1,6 @@
 package testing
 
-import "dagger.io/dagger/op"
+import "alpha.dagger.io/dagger/op"
 
 #up: [
 	op.#FetchGit & {
diff --git a/tests/ops/fetch-git/nonexistent/ref/main.cue b/tests/ops/fetch-git/nonexistent/ref/main.cue
index 618075ac..1f9b2d60 100644
--- a/tests/ops/fetch-git/nonexistent/ref/main.cue
+++ b/tests/ops/fetch-git/nonexistent/ref/main.cue
@@ -1,6 +1,6 @@
 package testing
 
-import "dagger.io/dagger/op"
+import "alpha.dagger.io/dagger/op"
 
 #up: [
 	op.#FetchGit & {
diff --git a/tests/ops/fetch-git/nonexistent/remote/main.cue b/tests/ops/fetch-git/nonexistent/remote/main.cue
index 4193c76f..4a18f303 100644
--- a/tests/ops/fetch-git/nonexistent/remote/main.cue
+++ b/tests/ops/fetch-git/nonexistent/remote/main.cue
@@ -1,6 +1,6 @@
 package testing
 
-import "dagger.io/dagger/op"
+import "alpha.dagger.io/dagger/op"
 
 #up: [
 	op.#FetchGit & {
diff --git a/tests/ops/load/invalid/cache/main.cue b/tests/ops/load/invalid/cache/main.cue
index 5191fa53..2b0873d4 100644
--- a/tests/ops/load/invalid/cache/main.cue
+++ b/tests/ops/load/invalid/cache/main.cue
@@ -1,6 +1,6 @@
 package testing
 
-import "dagger.io/dagger/op"
+import "alpha.dagger.io/dagger/op"
 
 test1: {
 	string
diff --git a/tests/ops/load/valid/component/main.cue b/tests/ops/load/valid/component/main.cue
index 05e9d75e..574c0abd 100644
--- a/tests/ops/load/valid/component/main.cue
+++ b/tests/ops/load/valid/component/main.cue
@@ -1,6 +1,6 @@
 package testing
 
-import "dagger.io/dagger/op"
+import "alpha.dagger.io/dagger/op"
 
 TestComponent: #up: [
 	op.#FetchContainer & {
diff --git a/tests/ops/load/valid/script/main.cue b/tests/ops/load/valid/script/main.cue
index d4184b09..d74567ed 100644
--- a/tests/ops/load/valid/script/main.cue
+++ b/tests/ops/load/valid/script/main.cue
@@ -1,6 +1,6 @@
 package testing
 
-import "dagger.io/dagger/op"
+import "alpha.dagger.io/dagger/op"
 
 test: {
 	string
diff --git a/tests/ops/mounts/valid/cache/main.cue b/tests/ops/mounts/valid/cache/main.cue
index 69b9d603..4159723b 100644
--- a/tests/ops/mounts/valid/cache/main.cue
+++ b/tests/ops/mounts/valid/cache/main.cue
@@ -1,7 +1,7 @@
 package testing
 
 import (
-	"dagger.io/dagger/op"
+	"alpha.dagger.io/dagger/op"
 )
 
 TestMountCache: {
diff --git a/tests/ops/mounts/valid/component/main.cue b/tests/ops/mounts/valid/component/main.cue
index 836673aa..2c9b5f47 100644
--- a/tests/ops/mounts/valid/component/main.cue
+++ b/tests/ops/mounts/valid/component/main.cue
@@ -1,6 +1,6 @@
 package testing
 
-import "dagger.io/dagger/op"
+import "alpha.dagger.io/dagger/op"
 
 test: {
 	string
diff --git a/tests/ops/mounts/valid/script/main.cue b/tests/ops/mounts/valid/script/main.cue
index 2ccc40bb..afde31f5 100644
--- a/tests/ops/mounts/valid/script/main.cue
+++ b/tests/ops/mounts/valid/script/main.cue
@@ -1,6 +1,6 @@
 package testing
 
-import "dagger.io/dagger/op"
+import "alpha.dagger.io/dagger/op"
 
 TestInvalidMountPath: {
 	string
diff --git a/tests/ops/mounts/valid/tmpfs/main.cue b/tests/ops/mounts/valid/tmpfs/main.cue
index 7980a56d..71699d83 100644
--- a/tests/ops/mounts/valid/tmpfs/main.cue
+++ b/tests/ops/mounts/valid/tmpfs/main.cue
@@ -1,6 +1,6 @@
 package testing
 
-import "dagger.io/dagger/op"
+import "alpha.dagger.io/dagger/op"
 
 TestMountTmpfs: {
 	string
diff --git a/tests/ops/push-container/main.cue b/tests/ops/push-container/main.cue
index 13e3827a..7761c0a7 100644
--- a/tests/ops/push-container/main.cue
+++ b/tests/ops/push-container/main.cue
@@ -1,9 +1,9 @@
 package main
 
 import (
-	"dagger.io/dagger/op"
-	"dagger.io/alpine"
-	"dagger.io/random"
+	"alpha.dagger.io/dagger/op"
+	"alpha.dagger.io/alpine"
+	"alpha.dagger.io/random"
 )
 
 registry: {
diff --git a/tests/ops/subdir/invalid/exec/main.cue b/tests/ops/subdir/invalid/exec/main.cue
index 19442466..8c42c368 100644
--- a/tests/ops/subdir/invalid/exec/main.cue
+++ b/tests/ops/subdir/invalid/exec/main.cue
@@ -1,6 +1,6 @@
 package testing
 
-import "dagger.io/dagger/op"
+import "alpha.dagger.io/dagger/op"
 
 TestInvalidExecSubdir: {
 	string
diff --git a/tests/ops/subdir/invalid/path/main.cue b/tests/ops/subdir/invalid/path/main.cue
index 4b61a118..cbfd9ed1 100644
--- a/tests/ops/subdir/invalid/path/main.cue
+++ b/tests/ops/subdir/invalid/path/main.cue
@@ -1,6 +1,6 @@
 package testing
 
-import "dagger.io/dagger/op"
+import "alpha.dagger.io/dagger/op"
 
 TestInvalidPathSubdir: {
 	string
diff --git a/tests/ops/subdir/valid/container/main.cue b/tests/ops/subdir/valid/container/main.cue
index 13219f2d..26311b10 100644
--- a/tests/ops/subdir/valid/container/main.cue
+++ b/tests/ops/subdir/valid/container/main.cue
@@ -1,6 +1,6 @@
 package testing
 
-import "dagger.io/dagger/op"
+import "alpha.dagger.io/dagger/op"
 
 #TestContainer: #up: [
 	op.#FetchContainer & {
diff --git a/tests/ops/subdir/valid/simple/main.cue b/tests/ops/subdir/valid/simple/main.cue
index 639eed63..384c3f38 100644
--- a/tests/ops/subdir/valid/simple/main.cue
+++ b/tests/ops/subdir/valid/simple/main.cue
@@ -1,6 +1,6 @@
 package testing
 
-import "dagger.io/dagger/op"
+import "alpha.dagger.io/dagger/op"
 
 TestSimpleSubdir: {
 	string
diff --git a/tests/stdlib/docker/push-pull/push-pull.cue b/tests/stdlib/docker/push-pull/push-pull.cue
index edaad5b3..5ca34cf8 100644
--- a/tests/stdlib/docker/push-pull/push-pull.cue
+++ b/tests/stdlib/docker/push-pull/push-pull.cue
@@ -1,11 +1,11 @@
 package main
 
 import (
-	"dagger.io/dagger"
-	"dagger.io/dagger/op"
-	"dagger.io/alpine"
-	"dagger.io/docker"
-	"dagger.io/random"
+	"alpha.dagger.io/dagger"
+	"alpha.dagger.io/dagger/op"
+	"alpha.dagger.io/alpine"
+	"alpha.dagger.io/docker"
+	"alpha.dagger.io/random"
 )
 
 source: dagger.#Artifact