docs: add conda/mamba install instructions for specific backends

docs/install.md

@@ -7,38 +7,65 @@ hide:
 
 # Install Ibis
 
-=== "pip"
+## Using `pip`
+
+We suggest starting with the DuckDB backend. It's performant and fully
+featured.
+
+```sh
+pip install 'ibis-framework[duckdb]'
+```
+
+If you would like to use a different backend, all of the available options are
+listed below.
+
+{% for backend in sorted(ibis.backends.base._get_backend_names()) %}
+{% if backend != "spark" %}
+=== "{{ backend }}"
 
     ```sh
-    pip install 'ibis-framework[duckdb]' # (1) (2)
+    pip install 'ibis-framework[{{ backend }}]'
     ```
 
-    1. We suggest starting with the DuckDB backend.  It's performant and fully featured.  If you would like to use a different backend, all of the available options are listed below.
+{% endif %}
+{% endfor %}
+
+Note that the `ibis-framework` package is _not_ the same as the `ibis` package
+in PyPI. These two libraries cannot coexist in the same Python environment, as
+they are both imported with the `ibis` module name.
 
-    2. Note that the `ibis-framework` package is *not* the same as the `ibis` package in PyPI.  These two libraries cannot coexist in the same Python environment, as they are both imported with the `ibis` module name.
+## Using `conda` or `mamba`
+
+<!-- prettier-ignore-start -->
 
 {% for mgr in ["conda", "mamba"] %}
 === "{{ mgr }}"
 
+    The base `ibis-framework` package includes support for the `duckdb`
+    backend. This is our recommended backend for local execution.
+
     ```sh
     {{ mgr }} install -c conda-forge ibis-framework
     ```
 
-{% endfor %}
-
-## Install backend dependencies
+    If you would like to use a different backend, all of the available options
+    are listed below.
 
 {% for backend in sorted(ibis.backends.base._get_backend_names()) %}
 {% if backend != "spark" %}
-=== "{{ backend }}"
+    === "{{ backend }}"
 
-    ```sh
-    pip install 'ibis-framework[{{ backend }}]'
-    ```
+        ```sh
+        {{ mgr }} install -c conda-forge ibis-{{ backend }}
+        ```
 
 {% endif %}
 {% endfor %}
 
+{% endfor %}
+
+<!-- prettier-ignore-end -->
+
 ---
 
 After you've successfully installed Ibis, try going through the tutorial: