Updated nightly build install docs (#481)

Signed-off-by: Jonathan Swartz <jonathan@jswartz.info>

Author: swahtz

README.md

@@ -35,18 +35,6 @@ from source.
 For the most up-to-date information on installing *f*VDB's pip packages, please see the
 [installation documentation](https://fvdb.ai/installation.html).
 
-### Nightly Builds
-
-Nightly wheels built from the latest `main` branch are published to a custom pip index.
-To install the latest nightly build:
-
-```shell
-pip install --pre fvdb-core --extra-index-url https://fvdb-packages.s3.us-east-2.amazonaws.com/simple-nightly/
-```
-
-Nightly builds use a synthetic version (e.g. `0.0.0.dev20260224+pt28.cu128`) and require `--pre`.
-The `+pt28.cu128` suffix identifies the PyTorch and CUDA versions the wheel was built against.
-Upgrading to a stable release later works naturally with `pip install --upgrade fvdb-core`.
 
 ## Building *f*VDB from Source
 

docs/installation.rst

@@ -42,6 +42,31 @@ PyTorch 2.8.0 + CUDA 12.8
 
 
 
+Installation from nightly builds
+-------------------------------------
+
+Nightly wheels are built from the latest ``main`` branch and published daily.
+The nightly version includes a date stamp and PyTorch/CUDA build identifiers
+(e.g. ``0.0.0.dev20260224+pt28.cu128``).
+
+PyTorch 2.8.0 + CUDA 12.8
+~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+.. code-block:: bash
+
+    pip install fvdb-core==0.0.0.dev20260224+pt28.cu128 --extra-index-url="https://d36m13axqqhiit.cloudfront.net/simple-nightly" torch==2.8.0 --extra-index-url https://download.pytorch.org/whl/cu128
+
+To list all available nightly versions:
+
+.. code-block:: bash
+
+    pip index versions fvdb-core --index-url="https://d36m13axqqhiit.cloudfront.net/simple-nightly" --pre
+
+.. note::
+
+    Replace ``20260224`` with the desired nightly date. Nightly builds are retained for 30 days.
+
+
 Installation from source
 -----------------------------