Remove requirement for specific NET SDK in GH Actions

.github/workflows/build.yml

@@ -40,11 +40,6 @@ jobs:
         run: |
           echo "Adding GNU tar to PATH"
           echo C:\Program Files\Git\usr\bin>>"%GITHUB_PATH%"
-      - uses: actions/setup-dotnet@v4
-        with:
-          dotnet-version: |
-            8.0
-            9.0.204
       - uses: actions/checkout@v4
       - name: 'Run: Compile, Test, Pack, Publish'
         run: ./build.cmd Compile Test Pack Publish
@@ -81,7 +76,7 @@ jobs:
         with:
           dotnet-version: |
             8.0
-            9.0.204
+            9.0
       - uses: actions/checkout@v4
       - name: 'Run: Compile, Test, Pack, Publish'
         run: ./build.cmd Compile Test Pack Publish
@@ -94,11 +89,6 @@ jobs:
     name: macos-latest
     runs-on: macos-latest
     steps:
-      - uses: actions/setup-dotnet@v4
-        with:
-          dotnet-version: |
-            8.0
-            9.0.204
       - uses: actions/checkout@v4
       - name: 'Run: Compile, Test, Pack, Publish'
         run: ./build.cmd Compile Test Pack Publish

.github/workflows/pr.yml

@@ -42,11 +42,6 @@ jobs:
         run: |
           echo "Adding GNU tar to PATH"
           echo C:\Program Files\Git\usr\bin>>"%GITHUB_PATH%"
-      - uses: actions/setup-dotnet@v4
-        with:
-          dotnet-version: |
-            8.0
-            9.0.204
       - uses: actions/checkout@v4
       - name: 'Run: Compile, Test, Pack'
         run: ./build.cmd Compile Test Pack
@@ -78,19 +73,14 @@ jobs:
         with:
           dotnet-version: |
             8.0
-            9.0.204
+            9.0
       - uses: actions/checkout@v4
       - name: 'Run: Compile, Test, Pack'
         run: ./build.cmd Compile Test Pack
   macos-latest:
     name: macos-latest
     runs-on: macos-latest
     steps:
-      - uses: actions/setup-dotnet@v4
-        with:
-          dotnet-version: |
-            8.0
-            9.0.204
       - uses: actions/checkout@v4
       - name: 'Run: Compile, Test, Pack'
         run: ./build.cmd Compile Test Pack

build/Build.CI.GitHubActions.cs

@@ -46,7 +46,11 @@ protected override GitHubActionsJob GetJobs(GitHubActionsImage image, IReadOnlyC
 
         var newSteps = new List<GitHubActionsStep>(job.Steps);
 
-        newSteps.Insert(0, new GitHubActionsSetupDotNetStep(["8.0", "9.0.204"]));
+        var onUbuntu = image.ToString().StartsWith("ubuntu", StringComparison.OrdinalIgnoreCase);
+        if (onUbuntu)
+        {
+            newSteps.Insert(0, new GitHubActionsSetupDotNetStep(["8.0", "9.0"]));
+        }
 
         var onWindows = image.ToString().StartsWith("windows", StringComparison.OrdinalIgnoreCase);
         if (onWindows)

build/Build.cs

@@ -149,6 +149,7 @@ protected override void OnBuildInitialized()
             DotNetRestore(x => x
                 .SetProjectFile(SolutionFile)
                 .SetVerbosity(DotNetVerbosity.minimal)
+                .AddProperty("BuildWithNetFrameworkHostedCompiler", "true")
             );
         });