Добавьте эту строчку в начала csproj-файла:

  <PropertyGroup>
    <NoStdLib>true</NoStdLib>
    <Nemerle Condition=" '$(Nemerle)' == '' ">$(ProgramFiles)\Nemerle</Nemerle>
    <Name>ClassLibrary1</Name>
  </PropertyGroup>

Добавьте ссылки на следующие сборки: mscorlib, System, System.Core, Nemerle, Nemerle.Linq:

Add references to the Nemerle.dll and the Nemerle.Linq.dll:
<Reference Include="mscorlib" />
<Reference Include="System" />
<Reference Include="System.Core">
  <RequiredTargetFramework>3.5</RequiredTargetFramework>
</Reference>
<Reference Include="Nemerle">
  <SpecificVersion>False</SpecificVersion>
  <HintPath>$(Nemerle)\Nemerle.dll</HintPath>
  <Private>True</Private>
</Reference>
<MacroReference Include="Nemerle.Linq">
  <HintPath>$(Nemerle)\Nemerle.Linq.dll</HintPath>
</MacroReference>

и замените стровку:

  <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />

на

<Import Project="$(Nemerle)\Nemerle.MSBuild.targets" />

Теперь c#-файлы будут компилироваться компилятором Nemerle (ncc). Вы так же можете добавлять новые файлы.

Это не очевидно, но C# при этом интерпретируется как Nemerle с синтаксисом C#. Но многие проекты (OSS???) были откомпилированы в процессе тестов парсера.

Z>Надеюсь ты проверил? У меня под рукой не было простенького проекта на CLR4, а nemerle стоит для .net4, поэтому рекомендации наполовину в теории. Я не сбилдил так ни одного проекта.

C:\Program Files (x86)\Nemerle\Nemerle.MSBuild.targets(230,9): error : Internal compiler error 'cannot reflect `System.Array'', please report a bug to bugs.nemerle.org. You can try modifying program near this location.
C:\Program Files (x86)\Nemerle\Nemerle.MSBuild.targets(230,9): error : internal compiler error: assertion failed in file ncc\external\InternalTypes.n, line 162: cannot reflect `System.Array'
     at Nemerle.Compiler.SystemTypeClass.Reflect(String type_name)
     at Nemerle.Compiler.SystemTypeClass.Init()
     at Nemerle.Compiler.ManagerClass._N__N_lambda__26508__26671.apply_void()
     at Nemerle.Compiler.ManagerClass._N_tryEx_26531(_N_closure_26515 _N_LoadExternalLibraries_cp_26530, FunctionVoid f)
     at Nemerle.Compiler.ManagerClass.LoadExternalLibraries()
     at Nemerle.Compiler.ManagerClass.Run()
     at Nemerle.CommandlineCompiler.MainClass.main_with_catching()

C:\Program Files (x86)\Nemerle\Nemerle.MSBuild.targets(230,9): error MSB4062: The "Nemerle.Tools.MSBuildTask.Ncc" task could not be loaded from the assembly C:\Program Files (x86)\Nemerle\\Nemerle.MSBuild.Tasks.dll. Could not load file or assembly 'file:///C:\Program Files (x86)\Nemerle\Nemerle.MSBuild.Tasks.dll' or one of its dependencies. This assembly is built by a runtime newer than the currently loaded runtime and cannot be loaded. Confirm that the <UsingTask> declaration is correct, and that the assembly and all its dependencies are available.

------ Build started: Project: ConsoleApplication1, Configuration: Debug Any CPU ------
C:\Program Files (x86)\Nemerle\ncc.exe 
/no-color 
/no-stdlib 
/greedy-references:- 
/define:DEBUG;TRACE 
/target:exe 
/debug+ 
/project-path:c:\Projects\test\ConsoleApplication1\ConsoleApplication1.csproj 
/root-namespace:ConsoleApplication1

 Program.cs
Properties\AssemblyInfo.cs
 
/ref:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\v3.5\System.Core.dll" 
/ref:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\v3.5\System.Data.DataSetExtensions.dll" 
/ref:C:\Windows\Microsoft.NET\Framework\v2.0.50727\System.Data.dll 
/ref:C:\Windows\Microsoft.NET\Framework\v2.0.50727\System.dll 
/ref:C:\Windows\Microsoft.NET\Framework\v2.0.50727\System.Xml.dll 
/ref:"C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\v3.5\System.Xml.Linq.dll" 

/out:obj\Debug\ConsoleApplication1.exe
C:\Program Files (x86)\Nemerle\Nemerle.MSBuild.targets(230,9): error : Internal compiler error 'cannot reflect `System.Array'', please report a bug to bugs.nemerle.org. You can try modifying program near this location.
C:\Program Files (x86)\Nemerle\Nemerle.MSBuild.targets(230,9): error : internal compiler error: assertion failed in file ncc\external\InternalTypes.n, line 162: cannot reflect `System.Array'
   at Nemerle.Compiler.SystemTypeClass.Reflect(String type_name)
   at Nemerle.Compiler.SystemTypeClass.Init()
   at Nemerle.Compiler.ManagerClass._N__N_lambda__24868__25031.apply_void()
   at Nemerle.Compiler.ManagerClass._N_tryEx_24891(_N_closure_24875 _N_LoadExternalLibraries_cp_24890, FunctionVoid f)
   at Nemerle.Compiler.ManagerClass.LoadExternalLibraries()
   at Nemerle.Compiler.ManagerClass.Run()
   at Nemerle.CommandlineCompiler.MainClass.main_with_catching()

Done building project "ConsoleApplication1.csproj" -- FAILED.
========== Build: 0 succeeded or up-to-date, 1 failed, 0 skipped ==========

using System;
using System.Collections.Generic;
using System.Text;

namespace ConsoleApplication4
{
    class Program
    {
        static void Main(string[] args)
        {
        }
    }
}

__>C:\Program Files (x86)\Nemerle\Nemerle.MSBuild.targets(230,9): error : Internal compiler error 'cannot reflect `System.Array'', please report a bug to bugs.nemerle.org. You can try modifying program near this location.
__>

    <Reference Include="Nemerle">
      <SpecificVersion>False</SpecificVersion>
      <HintPath>$(Nemerle)\Nemerle.dll</HintPath>
      <Private>True</Private>
    </Reference>
    <MacroReference Include="Nemerle.Linq">
      <HintPath>$(Nemerle)\Nemerle.Linq.dll</HintPath>
    </MacroReference>

    <MacroReference Include="Nemerle.Linq">
      <HintPath>$(Nemerle)\Nemerle.Linq.dll</HintPath>
    </MacroReference>

app.config;app.config : error MSB3249: Application Configuration file "app.config;app.config" is invalid. Could not find file 'c:\Projects\test\ConsoleApplication1\app.config;app.config'.