Remove The host build, consume the host build from core-setup

build_projects/shared-build-targets-utils/Utils/PublishMutationUtilties.cs

@@ -0,0 +1,81 @@
+using Microsoft.DotNet.Cli.Build.Framework;
+using Newtonsoft.Json;
+using Newtonsoft.Json.Linq;
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Threading.Tasks;
+
+namespace Microsoft.DotNet.Cli.Build
+{
+    public class PublishMutationUtilties
+    {
+        public static void CleanPublishOutput(
+            string path, 
+            string name, 
+            bool deleteRuntimeConfigJson=false, 
+            bool deleteDepsJson=false)
+        {
+            File.Delete(Path.Combine(path, $"{name}{Constants.ExeSuffix}"));
+            File.Delete(Path.Combine(path, $"{name}.dll"));
+            File.Delete(Path.Combine(path, $"{name}.pdb"));
+
+            if (deleteRuntimeConfigJson)
+            {
+                File.Delete(Path.Combine(path, $"{name}.runtimeconfig.json"));
+            }
+
+            if (deleteDepsJson)
+            {
+                File.Delete(Path.Combine(path, $"{name}.deps.json"));
+            }
+        }
+
+        public static void ChangeEntryPointLibraryName(string depsFile, string newName)
+        {
+            JToken deps;
+            using (var file = File.OpenText(depsFile))
+            using (JsonTextReader reader = new JsonTextReader(file))
+            {
+                deps = JObject.ReadFrom(reader);
+            }
+
+            string version = null;
+            foreach (JProperty target in deps["targets"])
+            {
+                var targetLibrary = target.Value.Children<JProperty>().FirstOrDefault();
+                if (targetLibrary == null)
+                {
+                    continue;
+                }
+                version = targetLibrary.Name.Substring(targetLibrary.Name.IndexOf('/') + 1);
+                if (newName == null)
+                {
+                    targetLibrary.Remove();
+                }
+                else
+                {
+                    targetLibrary.Replace(new JProperty(newName + '/' + version, targetLibrary.Value));
+                }
+            }
+            if (version != null)
+            {
+                var library = deps["libraries"].Children<JProperty>().First();
+                if (newName == null)
+                {
+                    library.Remove();
+                }
+                else
+                {
+                    library.Replace(new JProperty(newName + '/' + version, library.Value));
+                }
+                using (var file = File.CreateText(depsFile))
+                using (var writer = new JsonTextWriter(file) { Formatting = Formatting.Indented })
+                {
+                    deps.WriteTo(writer);
+                }
+            }
+        }
+    }
+}