The plugin requires PyCharm 2020.3 or later (include other JetBrains IDEs)
The plugin is in JetBrains repository (Poetry Plugin Page)
You can install the stable version on PyCharm's
Marketplace (Preference -> Plugins -> Marketplace) Official Document
The releases section of this repository contains a compiled version of the plugin: poetry-pycharm-plugin.zip(latest)
After downloading this file, you can install the plugin from disk by following the JetBrains instructions here.
Alternatively, you can clone this repository and follow the instructions under the "Building the plugin" heading below to build from source.
The build process will create the file
This file can be installed as a PyCharm plugin from disk following the same instructions.