Mention poetry 2.0 requirement

Author: dalito

README.md

@@ -7,22 +7,29 @@ A [Cookiecutter](https://cookiecutter.readthedocs.io/en/stable/) template for pr
 The following are required and recommended tools for using this cookiecutter and the LinkML project that it generates. This is all one-time setup, so if you have already done it skip to the [next section](#creating-a-new-project)!
 
   * **Python >= 3.9**
-  
-    LinkML tools are mainly written in Python, so you will need a recent Python interpreter to run this generator and to use the generated project.
 
+    LinkML tools are mainly written in Python, so you will need a recent Python interpreter to run this generator and to use the generated project.
 
   * **pipx**
-  
-    pipx is a tool for managing isolated Python-based applications. It is the recommended way to install Poetry and cruft. To install pipx follow the instructions here: https://pypa.github.io/pipx/installation/
 
+    pipx is a tool for managing isolated Python-based applications. It is the recommended way to install Poetry and cruft. To install pipx follow the instructions here: https://pypa.github.io/pipx/installation/
 
   * **Poetry**
-  
-    Poetry is a Python project management tool. You will use it in your generated project to manage dependencies and build distribution files. If you have pipx installed ([alternative installation methods](https://python-poetry.org/docs/#installation) are available) you can install Poetry by running:
+
+    Poetry is a Python project management tool. The template requires poetry version 2.0 or newer.
+    If you have pipx installed ([alternative installation methods](https://python-poetry.org/docs/#installation) are available) you can install Poetry by running:
      ```shell
      pipx install poetry
      ```
-  
+
+    - For having both Poetry 2.x and Poetry 1.x installed at the same time,
+      pipx has the option to install another version with a suffix-modified name,
+      here "poetry1",
+
+      ```bash
+        `pipx install --suffix=1 "poetry<2.0"`.
+      ```
+
     This project manages project-level configuration. User-level [configuration](https://python-poetry.org/docs/configuration/), if needed, is your responsibility.
 
   * **Poetry private repository**
@@ -34,7 +41,7 @@ The following are required and recommended tools for using this cookiecutter and
     export POETRY_PYPI_MIRROR_URL = "https://pypi-proxy.myorg.com/repository/pypi-all/simple"
     ```
 
-  * **Poetry Dynamic Versioning Plugin**: 
+  * **Poetry Dynamic Versioning Plugin**:
 
     This plugin automatically updates certain version strings in your generated project when you publish it. Your generated project will automatically be set up to use it. Install it by running:
     ```shell
@@ -48,7 +55,7 @@ The following are required and recommended tools for using this cookiecutter and
     ```shell
     pipx install cruft
     ```
-    You may also choose to not have a persistent installation of cruft, in which case you would replace any calls to the `cruft` command below with `pipx run cruft`. 
+    You may also choose to not have a persistent installation of cruft, in which case you would replace any calls to the `cruft` command below with `pipx run cruft`.
 
 ## Creating a new project