nixos-configs/common/home-manager/vscode-remote/module.nix

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moduleConfig:
{ lib, pkgs, ... }:
with lib;
{
options.services.vscode-server.enable = with types; mkEnableOption "VS Code Server";
config = moduleConfig rec {
name = "auto-fix-vscode-server";
description = "Automatically fix the VS Code server used by the remote SSH extension";
serviceConfig = {
# When a monitored directory is deleted, it will stop being monitored.
# Even if it is later recreated it will not restart monitoring it.
# Unfortunately the monitor does not kill itself when it stops monitoring,
# so rather than creating our own restart mechanism, we leverage systemd to do this for us.
Restart = "always";
RestartSec = 0;
ExecStart = "${pkgs.writeShellScript "${name}.sh" ''
set -euo pipefail
PATH=${makeBinPath (with pkgs; [ coreutils findutils inotify-tools ])}
bin_dir=~/.vscode-server/bin
# Fix any existing symlinks before we enter the inotify loop.
if [[ -e $bin_dir ]]; then
find "$bin_dir" -mindepth 2 -maxdepth 2 -name node -exec ln -sfT ${pkgs.nodejs-16_x}/bin/node {} \;
find "$bin_dir" -path '*/@vscode/ripgrep/bin/rg' -exec ln -sfT ${pkgs.ripgrep}/bin/rg {} \;
else
mkdir -p "$bin_dir"
fi
while IFS=: read -r bin_dir event; do
# A new version of the VS Code Server is being created.
if [[ $event == 'CREATE,ISDIR' ]]; then
# Create a trigger to know when their node is being created and replace it for our symlink.
touch "$bin_dir/node"
inotifywait -qq -e DELETE_SELF "$bin_dir/node"
ln -sfT ${pkgs.nodejs-16_x}/bin/node "$bin_dir/node"
ln -sfT ${pkgs.ripgrep}/bin/rg "$bin_dir/node_modules/@vscode/ripgrep/bin/rg"
# The monitored directory is deleted, e.g. when "Uninstall VS Code Server from Host" has been run.
elif [[ $event == DELETE_SELF ]]; then
# See the comments above Restart in the service config.
exit 0
fi
done < <(inotifywait -q -m -e CREATE,ISDIR -e DELETE_SELF --format '%w%f:%e' "$bin_dir")
''}";
};
};
}