Merge pull request #202 from itowlson/warn-for-downlevel-hosts

Highlight template for downlevel hosts

Author: itowlson

content/v2/http-outbound.md

@@ -112,7 +112,7 @@ You can find a complete example of using outbound HTTP in the JavaScript SDK rep
 
 > [**Want to go straight to the reference documentation?**  Find it here.](https://spinframework.github.io/spin-python-sdk/http/index.html)
 
-HTTP functions and classes are available in the `http` module. The function name is [`send`](https://spinframework.github.io/spin-python-sdk/http/index.html#spin_sdk.http.send). The [request type](https://spinframework.github.io/spin-python-sdk/http/index.html#spin_sdk.http.Request) is `Request`, and the [response type](https://spinframework.github.io/spin-python-sdk/http/index.html#spin_sdk.http.Response) is `Response`. For example:
+HTTP functions and classes are available in the `http` module. The function name is [`send`](https://spinframework.github.io/spin-python-sdk/http/index.html#spin_sdk.http.send). The [request type](https://spinframework.github.io/spin-python-sdk/v2/http/index.html#spin_sdk.http.Request) is `Request`, and the [response type](https://spinframework.github.io/spin-python-sdk/http/index.html#spin_sdk.http.Response) is `Response`. For example:
 
 ```python
 from spin_sdk.http import Request, Response, send

content/v3/http-outbound.md

@@ -111,7 +111,7 @@ You can find a complete example of using outbound HTTP in the JavaScript SDK rep
 
 > [**Want to go straight to the reference documentation?**  Find it here.](https://spinframework.github.io/spin-python-sdk/v3/http/index.html)
 
-HTTP functions and classes are available in the `http` module. The function name is [`send`](https://spinframework.github.io/spin-python-sdk/v3/http/index.html#spin_sdk.http.send). The [request type](https://spinframework.github.io/spin-python-sdk/http/index.html#spin_sdk.http.Request) is `Request`, and the [response type](https://spinframework.github.io/spin-python-sdk/v3/http/index.html#spin_sdk.http.Response) is `Response`. For example:
+HTTP functions and classes are available in the `http` module. The function name is [`send`](https://spinframework.github.io/spin-python-sdk/v3/http/index.html#spin_sdk.http.send). The [request type](https://spinframework.github.io/spin-python-sdk/v3/http/index.html#spin_sdk.http.Request) is `Request`, and the [response type](https://spinframework.github.io/spin-python-sdk/v3/http/index.html#spin_sdk.http.Response) is `Response`. For example:
 
 ```python
 from spin_sdk.http import Request, Response, send

content/v4/quickstart.md

@@ -231,7 +231,9 @@ You'll need the TinyGo compiler, as the standard Go compiler does not yet suppor
 {{card_element "template" "Zola SSG Template" "A template for using Zola framework to create a static webpage" "/hub/preview/template_zola_ssg" "rust" true }}
 {{blockEnd}}
 
-Now you are ready to create your first Spin application:
+Now you are ready to create your first Spin application.
+
+> The Rust, Go, and Python templates depend on Spin 4 and its support for WASI Preview 3. As Spin 4 is fairly new, some Spin hosts support only Spin 3.x. If you need to target such a host, look for a `http-<lang>-p2` template and use that instead.
 
 {{ tabs "sdk-type" }}
 

content/v4/writing-apps.md

@@ -258,6 +258,8 @@ HTTP path: /...
 
 All of these templates create a manifest containing a single component, and the source code for a minimal "hello world" component.
 
+> The Rust, Go, and Python templates depend on Spin 4 and its support for WASI Preview 3. As Spin 4 is fairly new, some Spin hosts support only Spin 3.x. If you need to target such a host, look for a `http-<lang>-p2` template and use that instead.
+
 ## Adding a New Component to an Application
 
 To add a new component to an existing application using a template, run the `spin add` command. This works in a very similar way to `spin new`, except that it expects the `spin.toml` file to already exist, and adds the details for the new component to that `spin.toml`.