diff --unified --recursive --text msbuild.orig/mono/build/install.proj msbuild.new/mono/build/install.proj
--- msbuild.orig/mono/build/install.proj	2019-04-09 01:19:48.000000000 +0200
+++ msbuild.new/mono/build/install.proj	2019-04-19 16:14:17.165327157 +0200
@@ -100,13 +100,13 @@
 
         <Exec
             WorkingDirectory="$(XBuildDir)"
-            Command="ln -sfn Current 15.0" />
+            Command="ln -sfn $(TargetMSBuildToolsVersion) Current" />
         <Exec
             WorkingDirectory="$(MonoInstallPrefix)\lib\mono\msbuild"
-            Command="ln -s Current 15.0" />
+            Command="ln -s $(TargetMSBuildToolsVersion) Current" />
         <ItemGroup>
-            <CopiedFiles Include="$(MonoInstallPrefix)\bin\msbuild\15.0" />
-            <CopiedFiles Include="$(XBuildDir)\15.0" />
+            <CopiedFiles Include="$(MonoInstallPrefix)\bin\msbuild\$(TargetMSBuildToolsVersion)" />
+            <CopiedFiles Include="$(XBuildDir)\$(TargetMSBuildToolsVersion)" />
         </ItemGroup>
 
         <Copy SourceFiles="@(MSBuildFiles)" DestinationFolder="$(MSBuildInstallBinDir)">