Add symlink handling for unix

StabilityMatrix.Core/Helper/Compat.cs

@@ -1,6 +1,7 @@
 using System.Diagnostics;
 using System.Diagnostics.CodeAnalysis;
 using System.Runtime.InteropServices;
+using System.Runtime.Versioning;
 using StabilityMatrix.Core.Models.FileInterfaces;
 
 namespace StabilityMatrix.Core.Helper;
@@ -15,8 +16,14 @@ public static class Compat
     
     // OS Platform
     public static PlatformKind Platform { get; }
+    
+    [SupportedOSPlatformGuard("Windows")]
     public static bool IsWindows => Platform.HasFlag(PlatformKind.Windows);
+    
+    [SupportedOSPlatformGuard("Linux")]
     public static bool IsLinux => Platform.HasFlag(PlatformKind.Linux);
+    
+    [SupportedOSPlatformGuard("macOS")]
     public static bool IsMacOS => Platform.HasFlag(PlatformKind.MacOS);
     public static bool IsUnix => Platform.HasFlag(PlatformKind.Unix);
     

StabilityMatrix.Core/Helper/SharedFolders.cs

@@ -21,6 +21,19 @@ public class SharedFolders : ISharedFolders
         this.packageFactory = packageFactory;
     }
     
+    // Platform redirect for junctions / symlinks
+    private static void CreateLinkOrJunction(string junctionDir, string targetDir, bool overwrite)
+    {
+        if (Compat.IsWindows)
+        {
+            Junction.Create(junctionDir, targetDir, overwrite);
+        }
+        else
+        {
+            Directory.CreateSymbolicLink(junctionDir, targetDir);
+        }
+    }
+
     public static void SetupLinks(Dictionary<SharedFolderType, string> definitions, 
         DirectoryPath modelsDirectory, DirectoryPath installDirectory)
     {
@@ -55,7 +68,7 @@ public class SharedFolders : ISharedFolders
                 destinationDir.Delete(true);
             }
             Logger.Info($"Creating junction link from {sourceDir} to {destinationDir}");
-            Junction.Create(destinationDir, sourceDir, true);
+            CreateLinkOrJunction(destinationDir, sourceDir, true);
         }
     }
 
@@ -92,7 +105,7 @@ public class SharedFolders : ISharedFolders
                 Directory.Delete(destination, false);
             }
             Logger.Info($"Updating junction link from {source} to {destination}");
-            Junction.Create(destination, source, true);
+            CreateLinkOrJunction(destination, source, true);
         }
     }