MSBuildProjectDescriptions has dedicated property for the csproj path

src/Microsoft.DotNet.ProjectModel/MSBuildProjectDescription.cs

@@ -9,15 +9,17 @@ namespace Microsoft.DotNet.ProjectModel
 {
     /// <summary>
     /// Represents an MSBuild project.
-    /// It has been invisibly built by MSBuild, so it behaves like a package: can provide all assets up front
+    /// It has been built by MSBuild, so it behaves like a package: can provide all assets up front
+    /// 
+    /// The Path represents the path to the project.json, if there is one near the csproj file.
     /// </summary>
     public class MSBuildProjectDescription : TargetLibraryWithAssets
     {
         public MSBuildProjectDescription(
             string path, 
+            string msbuildProjectPath, 
             LockFileProjectLibrary projectLibrary, 
             LockFileTargetLibrary lockFileLibrary, 
-            Project projectFile,
             IEnumerable<LibraryRange> dependencies, 
             bool compatible, 
             bool resolved)
@@ -31,12 +33,11 @@ namespace Microsoft.DotNet.ProjectModel
                   compatible: compatible,
                   framework: null)
         {
-            ProjectFile = projectFile;
             ProjectLibrary = projectLibrary;
+            MsbuildProjectPath = msbuildProjectPath;
         }
 
         public LockFileProjectLibrary ProjectLibrary { get; }
-
+        public string MsbuildProjectPath { get; set; }
-        public Project ProjectFile { get; }
     }
 }

src/Microsoft.DotNet.ProjectModel/Resolution/MSBuildDependencyProvider.cs

@@ -36,10 +36,10 @@ namespace Microsoft.DotNet.ProjectModel.Resolution
             var projectFile = projectLibrary.Path == null ? null : _projectResolver(projectLibrary.Path);
 
             var msbuildPackageDescription = new MSBuildProjectDescription(
+                projectLibrary.Path,
                 msbuildProjectPath,
                 projectLibrary,
                 targetLibrary,
-                projectFile,
                 dependencies, 
                 compatible, 
                 resolved: compatible && exists);