Merge pull request #4741 from manics/docs-py-min

Consistently use minimum Python version in docs

README.md

@@ -56,7 +56,7 @@ for administration of the Hub and its users.
 ### Check prerequisites
 
 - A Linux/Unix based system
-- [Python](https://www.python.org/downloads/) 3.6 or greater
+- [Python](https://www.python.org/downloads/) 3.8 or greater
 - [nodejs/npm](https://www.npmjs.com/)
 
   - If you are using **`conda`**, the nodejs and npm dependencies will be installed for

docs/source/conf.py

@@ -70,6 +70,8 @@ myst_enable_extensions = [
 myst_substitutions = {
     # date example: Dev 07, 2022
     "date": datetime.date.today().strftime("%b %d, %Y").title(),
+    "node_min": "12",
+    "python_min": "3.8",
     "version": jupyterhub.__version__,
 }
 

docs/source/contributing/setup.md

@@ -12,18 +12,18 @@ development.
 ### Install Python
 
 JupyterHub is written in the [Python](https://python.org) programming language and
-requires you have at least version 3.8 installed locally. If you haven’t
+requires you have at least version {{python_min}} installed locally. If you haven’t
 installed Python before, the recommended way to install it is to use
 [Miniforge](https://github.com/conda-forge/miniforge#download).
 
 ### Install nodejs
 
-[NodeJS 12+](https://nodejs.org/en/) is required for building some JavaScript components.
+[NodeJS {{node_min}}+](https://nodejs.org/en/) is required for building some JavaScript components.
 `configurable-http-proxy`, the default proxy implementation for JupyterHub, is written in Javascript.
 If you have not installed NodeJS before, we recommend installing it in the `miniconda` environment you set up for Python.
 You can do so with `conda install nodejs`.
 
-Many in the Jupyter community use \[`nvm`\](<https://github.com/nvm-sh/nvm>) to
+Many in the Jupyter community use [`nvm`](https://github.com/nvm-sh/nvm) to
 managing node dependencies.
 
 ### Install git
@@ -59,7 +59,7 @@ a more detailed discussion.
    python -V
    ```
 
-   This should return a version number greater than or equal to 3.8.
+   This should return a version number greater than or equal to {{python_min}}.
 
    ```bash
    npm -v

docs/source/tutorial/quickstart.md

@@ -5,11 +5,11 @@
 Before installing JupyterHub, you will need:
 
 - a Linux/Unix-based system
-- [Python](https://www.python.org/downloads/) 3.6 or greater. An understanding
+- [Python {{python_min}}](https://www.python.org/downloads/) or greater. An understanding
   of using [`pip`](https://pip.pypa.io) or
   [`conda`](https://docs.conda.io/projects/conda/en/latest/user-guide/getting-started.html) for
   installing Python packages is helpful.
-- [nodejs/npm](https://www.npmjs.com/). [Install nodejs/npm](https://docs.npmjs.com/getting-started/installing-node),
+- [Node.js {{node_min}}](https://www.npmjs.com/) or greater, along with npm. [Install Node.js/npm](https://docs.npmjs.com/getting-started/installing-node),
   using your operating system's package manager.
 
   - If you are using **`conda`**, the nodejs and npm dependencies will be installed for
@@ -24,7 +24,7 @@ Before installing JupyterHub, you will need:
     ```
 
     [nodesource][] is a great resource to get more recent versions of the nodejs runtime,
-    if your system package manager only has an old version of Node.js (e.g. 10 or older).
+    if your system package manager only has an old version of Node.js.
 
 - A [pluggable authentication module (PAM)](https://en.wikipedia.org/wiki/Pluggable_authentication_module)
   to use the [default Authenticator](authenticators).