diff --git a/AGENTS.md b/AGENTS.md
index 64f637a..68886b5 100644
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -6,7 +6,8 @@ Rules for AI coding assistants working in this repository.
   `.gitea/workflows/validate.yml`.
 - **`uv` for everything:** `uv sync --group dev`, `uv run pytest`,
   `uv run ruff check .`, `uv run python ...`. Never `pip` into the ambient
-  environment.
+  environment. A node's `build:` is `uv pip install .`, so dataflows must be run
+  with `--uv`.
 - **`ruff` is the linter and the formatter.** `uv run ruff check .` must be clean.
 - **Markdown is linted too.** `uv run pymarkdown scan *.md` must be clean. Its line
   length is set in `pyproject.toml`.
diff --git a/README.md b/README.md
index bd7dc9a..d7f4ee3 100644
--- a/README.md
+++ b/README.md
@@ -16,7 +16,7 @@ nodes:
   - id: view
     git: ssh://git@gitea.liria.cl:5001/liria/dora-image-view.git
     tag: v0.1.0
-    build: pip install .
+    build: uv pip install .
     path: dora-image-view
     inputs:
       image: camera/image_bgr
diff --git a/dataflow.yml b/dataflow.yml
index 5099a51..bf33145 100644
--- a/dataflow.yml
+++ b/dataflow.yml
@@ -4,7 +4,7 @@
 #
 # It lives at the repository root rather than beside tests/source.py because a
 # node's working directory is the directory of the dataflow file, and both
-# nodes build with `pip install .`, which needs pyproject.toml in that
+# nodes build with `uv pip install .`, which needs pyproject.toml in that
 # directory.
 #
 # Both nodes are built from the checkout with `path:` + `build:`, which is what
@@ -38,7 +38,7 @@ nodes:
     args: tests/source.py
     # The source needs dora-rs, numpy and pyarrow; installing the project gives
     # it exactly the versions pinned in uv.lock.
-    build: pip install .
+    build: uv pip install .
     inputs:
       tick: dora/timer/millis/33
     outputs:
@@ -57,7 +57,7 @@ nodes:
 
   - id: view
     path: dora-image-view
-    build: pip install .
+    build: uv pip install .
     inputs:
       image: source/image
       depth: source/depth
diff --git a/dora-node.yml b/dora-node.yml
index beb1a55..68fbdc1 100644
--- a/dora-node.yml
+++ b/dora-node.yml
@@ -13,10 +13,10 @@ keywords: [opencv, view, bbox, bounding-box, image, depth, intrinsics, camera-in
 
 runtime: python
 entrypoint: dora-image-view
-# `dora build --uv` / `dora run --uv` rewrites this to `uv pip install .` and
-# gives the node its own managed venv under `.dora/python-envs/`, so the
-# dependencies it sees at runtime are the ones installed here.
-build: pip install .
+# Run the dataflow with --uv, which gives the node its own managed venv under
+# `.dora/python-envs/`, so what it imports at runtime is what was installed
+# here. Without --uv this needs a virtualenv to install into.
+build: uv pip install .
 dora: ">=1.0"
 
 inputs:
@@ -88,7 +88,7 @@ example: |
   - id: view
     git: ssh://git@gitea.liria.cl:5001/liria/dora-image-view.git
     tag: v0.1.0
-    build: pip install .
+    build: uv pip install .
     path: dora-image-view
     inputs:
       image: camera/image_bgr