Update install docs

doc/install/installing.rst

@@ -135,20 +135,6 @@ You can then run the installer using
 Finally, close your terminal window and open a new one to make the ``conda`` command
 properly available.
 
-Alternatively, if you have already installed Anaconda or Miniconda, make sure that you create your environment
-with the "channel" set to "conda-forge", e.g. for a Python 3.13 environment:
-
-.. code-block:: bash
-
-   conda create --name amuse_p313 python=3.13 --channel conda-forge --override-channels
-
-
-which you activate in the usual way:
-
-.. code-block:: bash 
-
-   conda activate amuse_p313
-
 
 .. _installing_amuse:
 
@@ -162,22 +148,22 @@ command in your terminal to download it as above, for example:
 
 .. code-block:: bash
 
-   curl -L -O "https://github.com/amusecode/amuse/archive/refs/tags/v2025.5.0.tar.gz"
+   curl -L -O "https://github.com/amusecode/amuse/archive/refs/tags/v2025.9.0.tar.gz"
 
 
 This ``.tar.gz`` file needs to be unpacked first (you may need to change the version if
 you downloaded a newer one):
 
 .. code-block:: bash
 
-   tar xf v2025.5.0.tar.gz
+   tar xf v2025.9.0.tar.gz
 
 
 Then we can enter the directory with the AMUSE source code:
 
 .. code-block:: bash
 
-   cd amuse-2025.5.0
+   cd amuse-2025.9.0
 
 
 And then you can start the installer:
@@ -200,40 +186,6 @@ Slack <https://amusecode.slack.com>`_ or by `making an issue on
 GitHub <https://github.com/amusecode/amuse/issues/new/choose>`_.
 
 
-Installing from a Git repository
-````````````````````````````````
-
-If you plan to modify AMUSE or one of the codes in it, then you may want to install from
-a local git clone instead of from a tar file. This will take more disk space and more
-download time, so it shouldn't be the first option, but if you want to do it then you
-can. You'll need to gave `git` installed:
-
-.. code-block:: bash
-
-   git clone https://github.com/amusecode/amuse.git
-
-
-Then you can enter the source directory using:
-
-.. code-block:: bash
-
-   cd amuse
-
-
-Select a version to build (use either one of these, or whichever version is relevant):
-
-.. code-block:: bash
-
-   git switch main                          # current development version
-   git checkout checkout v2025.5.0          # tagged release
-
-And now you can start the installer as before:
-
-.. code-block:: bash
-
-   ./setup
-
-
 Additional packages
 ```````````````````
 
@@ -288,6 +240,41 @@ You should now have a working AMUSE setup. To start
 using it, see :ref:`getting_started_with_amuse` or the :ref:`interactive_tutorial`
 
 
+Debugging conda package installation
+````````````````````````````````````
+
+If you encounter problems with installing packages using ``conda``, or AMUSE doesn't
+compile correctly, then you should check that you are using the ``conda-forge`` channel
+rather than something else.
+
+Conda can use different sources of packages, which it calls channels. Different channels
+contain software packaged by different people, and packages from different channels are
+often incompatible. If you type
+
+.. code-block:: bash
+
+    conda list
+
+
+then you should see a list of packages that are installed in the active environment, and
+which channel they came from. Ideally, all of them have ``conda-forge`` as the channel.
+
+If not, then you can reinstall the package from ``conda-forge`` and see if that improves
+the situation.
+
+To reinstall a package from ``conda-forge``, use
+
+.. code-block:: bash
+
+    conda install -c conda-forge <package name>
+
+
+If you want to combine AMUSE with another package that isn't available from conda-forge,
+then you may have to install that from another channel, and hope that things work. Or
+ask the maintainers of that package to add it to conda-forge and be a bit more
+compatible with the rest of the world.
+
+
 Alternative installation options
 ================================
 
@@ -296,6 +283,42 @@ almost everyone wanting to use AMUSE to do astrophysics. Nevertheless, there may
 cases where you need a different setup, for example because you cannot use Conda. In
 that case, you'll want one of these alternative installations.
 
+.. _installing_from_git:
+
+Installing from a Git repository
+--------------------------------
+
+If you plan to modify AMUSE or one of the codes in it, then you may want to install from
+a local git clone instead of from a tar file. This will take more disk space and more
+download time, so it shouldn't be the first option, but if you want to do it then you
+can. You'll need to gave `git` installed:
+
+.. code-block:: bash
+
+   git clone https://github.com/amusecode/amuse.git
+
+
+Then you can enter the source directory using:
+
+.. code-block:: bash
+
+   cd amuse
+
+
+Select a version to build (use either one of these, or whichever version is relevant):
+
+.. code-block:: bash
+
+   git switch main                          # current development version
+   git checkout checkout v2025.9.0          # tagged release
+
+And now you can start the installer as before:
+
+.. code-block:: bash
+
+   ./setup
+
+
 .. _using_a_virtualenv:
 
 Using a virtualenv

doc/reference/index.rst

@@ -26,7 +26,6 @@ Reference documentation
    legacy_support
    message-protocol
    distributed
-   cuda-setup
    cartesius
    slurm
    style_guide

support/setup/help.sh

@@ -107,7 +107,7 @@ or a Python virtualenv. If you have an environment into which you'd like to
 install AMUSE, you should activate it now. To create a new Conda environment,
 use
 
-    conda create -n Amuse-env
+    conda create --channel conda-forge --override-channels -n Amuse-env
 
 Then you activate it using