add empty string defaults to plugin executable paths

Author: jjw24

Flow.Launcher.Core/ExternalPlugins/Environments/AbstractPluginEnvironment.cs

@@ -1,13 +1,11 @@
-using Flow.Launcher.Infrastructure;
-using Flow.Launcher.Infrastructure.Logger;
+using Flow.Launcher.Infrastructure.Logger;
 using Flow.Launcher.Infrastructure.UserSettings;
 using Flow.Launcher.Plugin;
 using Flow.Launcher.Plugin.SharedCommands;
 using System;
 using System.Collections.Generic;
 using System.IO;
 using System.Linq;
-using System.Text.RegularExpressions;
 using System.Windows.Forms;
 
 namespace Flow.Launcher.Core.ExternalPlugins.Environments
@@ -32,12 +30,6 @@ public abstract class AbstractPluginEnvironment
 
         internal PluginsSettings PluginSettings;
 
-        private const string updatePythonIndicatorFilename = ".updatePythonPath";
-
-        private const string updateNodeIndicatorFilename = ".updateNodePath";
-
-        private const string appDataRegex = @"app-\d\.\d\.\d";
-
         internal AbstractPluginEnvironment(List<PluginMetadata> pluginMetadataList, PluginsSettings pluginSettings)
         {
             PluginMetadataList = pluginMetadataList;

Flow.Launcher.Infrastructure/UserSettings/PluginSettings.cs

@@ -5,7 +5,7 @@ namespace Flow.Launcher.Infrastructure.UserSettings
 {
     public class PluginsSettings : BaseModel
     {
-        private string pythonExecutablePath;
+        private string pythonExecutablePath = string.Empty;
         public string PythonExecutablePath {
             get { return pythonExecutablePath; }
             set
@@ -15,7 +15,7 @@ public string PythonExecutablePath {
             }
         }
 
-        private string nodeExecutablePath;
+        private string nodeExecutablePath = string.Empty;
         public string NodeExecutablePath
         {
             get { return nodeExecutablePath; }