All development is recommended to be done on a Linux system.
Install node.js and npm.
curl -fsSL https://deb.nodesource.com/setup_20.x | sudo -E bash -
sudo apt install -y nodejsInstall sage-lsp-server.
git clone https://github.com/SeanDictionary/sage-lsp-server
./src/server/envLSP/bin/pip install -e ./sage-lsp-server