wheel build instruction, remove py-build-release again

BUILD.md

@@ -66,7 +66,7 @@ Rerun is available as a package on PyPi and can be installed with `pip install r
 Additionally, prebuilt dev wheels from head of main are available at <https://github.com/rerun-io/rerun/releases/tag/prerelease>.
 
 If you want to build from source, you can do so easily in the pixi environment:
-* Run `pixi run py-build-release` to build SDK & viewer for python (or `pixi run py-build` for a debug build)
+* Run `pixi run py-build --release` to build SDK & viewer for python (or `pixi run py-build` for a debug build)
 * Then you can run examples from the repository, either by making the pixi shell active with  `pixi shell` and then running python or by using `pixi run`, e.g. `pixi run python examples/python/minimal/main.py`
 
 
@@ -84,25 +84,15 @@ pixi run py-fmt
 ```
 
 ### Building an installable Python Wheel
-The Python bindings to the core Rust library are built using https://github.com/PyO3/pyo3.
-
-To build an installable Python wheel run:
-```
-pip install -r rerun_py/requirements-build.txt
-maturin build -m rerun_py/Cargo.toml --release
+The `py-wheel` command builds a whl file:
+```sh
+pixi run py-wheel --release
 ```
-
-By default the wheels will be built to `target/wheels` (use the `-o` flag to set a different output directory).
-
-Now you can install `rerun` in any Python3 environment using:
-
+Which you can then install in your own virtual environment:
 ```sh
-pip3 install target/wheels/*.whl
+pip install ../rerun/target/wheels/*.whl
 ```
 
-
-
-
 ## Building and installing the Rerun C++ SDK
 
 On Windows you have to have a system install of Visual Studio 2022 in order to compile the SDK and samples.

pixi.toml

@@ -108,7 +108,7 @@ py-fmt-check = "ruff format --check --config rerun_py/pyproject.toml"
 py-lint = "mypy --install-types --non-interactive --no-warn-unused-ignore"
 
 py-build = "maturin develop --manifest-path rerun_py/Cargo.toml --extras=tests"
-py-build-release = "maturin develop --release --manifest-path rerun_py/Cargo.toml --extras=tests"
+py-wheel = "maturin build --manifest-path rerun_py/Cargo.toml"
 
 # Run the Python tests.
 # Don't call this on CI - use `nox` to run tests on all supported Python versions instead.

rerun_py/README.md

@@ -59,12 +59,16 @@ Note that SDK and Viewer can run on different machines!
 We use the [`pixi`](https://prefix.dev/) for managing dev-tool versioning, download and task running. See [here](https://github.com/casey/just#installation) for installation instructions.
 
 ```sh
-pixi run py-build-release
+pixi run py-build --release
 ```
-To build SDK & viewer for python (or `pixi run py-build` for a debug build).
+To build SDK & viewer for python (or `pixi run py-build` for a debug build) and install it in the pixi environment.
 
 You can then run examples from the repository, either by making the pixi shell active with `pixi shell` and then running python or by using `pixi run`, e.g. `pixi run python examples/python/minimal/main.py`.
 
+Respectively, to build a wheel instead for manual install use:
+```sh
+pixi run py-wheel --release
+```
 
 Refer to [BUILD.md](../BUILD.md) for details on the various different build options of the Rerun Viewer and SDKs for all target languages.