Initial macOS Build Support

.github/workflows/build-project.yml

@@ -22,7 +22,7 @@ jobs:
     runs-on: ubuntu-24.04
     strategy:
       matrix:
-        rid: [linux-x64, win-x64]
+        rid: [linux-x64, win-x64, osx-arm64]
 
     steps:
       - name: Checkout Repository

.github/workflows/build-release.yml

@@ -75,6 +75,9 @@ jobs:
       - name: win-x64 Build
         run: dotnet publish -p:PublishProfile=win-x64 -c Release -p:AssemblyVersion=${{ github.event.inputs.version }} -p:FileVersion=${{ github.event.inputs.version }} -o ./output/win-x64 ${{env.PROJECT_PATH}}
 
+      - name: osx-arm64 Build
+        run: dotnet publish -p:PublishProfile=osx-arm64 -c Release -p:AssemblyVersion=${{ github.event.inputs.version }} -p:FileVersion=${{ github.event.inputs.version }} -o ./output/osx-arm64 ${{env.PROJECT_PATH}}
+
       - name: flatpak-x86_64 Build
         env:
           APP_VERSION: ${{ github.event.inputs.version }}
@@ -87,6 +90,7 @@ jobs:
         run: |
           mkdir -p ./release
           mv ./output/win-x64/HedgeModManager.UI.exe ./release/HedgeModManager.exe
+          mv ./output/osx-arm64/HedgeModManager.UI ./release/HedgeModManager
           mv ./flatpak/${{env.FLATPAK_ID}}.flatpak ./release/${{env.FLATPAK_ID}}.flatpak
 
       - name: Create Release

.gitignore

@@ -215,3 +215,4 @@ _Pvt_Extensions/
 ModelManifest.xml
 
 Ignored/
+.DS_Store

Source/HedgeModManager.UI/Properties/PublishProfiles/osx-arm64.pubxml

@@ -0,0 +1,7 @@
+<Project>
+    <PropertyGroup>
+        <RuntimeIdentifier>osx-arm64</RuntimeIdentifier>
+        <PublishSingleFile>true</PublishSingleFile>
+        <SelfContained>false</SelfContained>
+    </PropertyGroup>
+</Project>

Source/Libraries/HedgeModManager.Epic/EpicLocator.cs

@@ -31,7 +31,12 @@ public void LocateEpicRoots()
             searchPaths.Add(Path.Combine(appdata, "heroic"));
             searchPaths.Add(Path.Combine("heroic"));
         }
-
+
+        if (OperatingSystem.IsMacOS())
+        {
+            searchPaths.Add(Path.Combine(appdata, "heroic"));
+        }
+
         if (OperatingSystem.IsLinux())
         {
             // Heroic Games Launcher (Flatpak)

Source/Libraries/HedgeModManager.Steam/SteamLocator.cs

@@ -32,6 +32,13 @@ public class SteamLocator : IGameLocator
         return null;
     }
 
+    [SupportedOSPlatform("macos")]
+    private string? FindSteamLibraryMacOS()
+    {
+        // TODO: Open a folder selection window
+        return "";
+    }
+
     private string? FindSteamLibraryUnix()
     {
         var pathList = new[]
@@ -62,6 +69,12 @@ public class SteamLocator : IGameLocator
                 return SteamInstallPath;
             }
 
+            if (OperatingSystem.IsMacOS())
+            {
+                SteamInstallPath = FindSteamLibraryMacOS();
+                return SteamInstallPath;
+            }
+
             SteamInstallPath = FindSteamLibraryUnix();
             return SteamInstallPath;
         }
@@ -128,6 +141,22 @@ public List<SteamGame> Locate()
                 continue;
             }
 
+            // Paths will be encoded by Windows Steam and will need to be adapted for macOS paths.
+            // C:\ is equivalent to the Wine prefix.
+            // Any other drive letter should be removed and treated as raw Unix path.
+            if (OperatingSystem.IsMacOS())
+            {
+                if (path.StartsWith(@"C:\"))
+                {
+                    path = SteamInstallPath;
+                }
+                else
+                {
+                    // Remove drive letter and replace slashes
+                    path = path[2..].Replace(@"\", "/");
+                }
+            }
+
             var libPath = Path.Combine(path, "steamapps");
             foreach (var app in apps)
             {