NuGet.msbuild

<?xml version="1.0" encoding="utf-8"?>
<Project xmlns="http://schemas.microsoft.com/developer/msbuild/2003" ToolsVersion="3.5" InitialTargets="CheckPrerequisites" DefaultTargets="Build">
    <PropertyGroup>
        <MSBuildCommunityTasksPath>$(MSBuildProjectDirectory)\Tools\MSBuildTasks\tools</MSBuildCommunityTasksPath>
    </PropertyGroup>
    <Import Project="$(MSBuildCommunityTasksPath)\MSBuild.Community.Tasks.Targets" 
            Condition="Exists('$(MSBuildCommunityTasksPath)')"/>

    <Target Name="CheckPrerequisites">
        <Error Condition="!Exists('$(MSBuildCommunityTasksPath)')"
               Text="Execute 'restore.cmd' to obtain required nuget packages" />

        <Warning Condition="'$(PackageVersion)' == '' OR '$(PackageVersion)' == '$(DefaultPackageVersion)'"
                 Text="Specify property PackageVersion to create package for publishing. See semver.org for naming conventions." />
    </Target>
    
    <PropertyGroup>
        <NuGet>.nuget\nuget.exe</NuGet>
        
        <Configuration Condition="'$(Configuration)' == ''">Release</Configuration>
        <OutDir>out\$(Configuration)</OutDir>
        
        <DefaultPackageVersion>1.0.0-internal</DefaultPackageVersion>   
        <PackageVersion>1.4.0</PackageVersion>   
        
        <NuGetPackagesDir>$(OutDir)\NuGet</NuGetPackagesDir>
        <PackageOutDir>$(OutDir)\Packages</PackageOutDir>
    </PropertyGroup>

    <PropertyGroup>
        <NuSpecFiles>$(NuGetPackagesDir)/**/*.nuspec</NuSpecFiles>
    </PropertyGroup>
    
    <Target Name="Build" DependsOnTargets="Clean;CopyBinaries;CollectNuspecs;UpdateVersion;Pack">
    </Target>

    <Target Name="CollectNuspecs">
        <ItemGroup>
            <NuSpecFiles Include="$(NuSpecFiles)" />
        </ItemGroup>
        <Message Text="Nuspec: %(NuSpecFiles.Identity)" />
    </Target>
    
    <Target Name="Pack">
        <MakeDir Directories="$(PackageOutDir)" />
        <Exec Command='$(NuGet) pack "%(NuSpecFiles.FullPath)" -OutputDirectory "$(PackageOutDir)"'/>
    </Target>
    
    <Target Name="UpdateVersion" Inputs="%(NuSpecFiles.Identity)" Outputs="_DO_IT_ANYWAY_">
        <Message Text="Updating package %(NuSpecFiles.Identity) to version $(PackageVersion) ..." />
        <XmlUpdate XmlFileName="%(NuSpecFiles.FullPath)"
               Prefix="d" Namespace="http://schemas.microsoft.com/packaging/2011/10/nuspec.xsd"
               XPath="/d:package/d:metadata/d:version"
               Value="$(PackageVersion)" />
        
        <XmlUpdate XmlFileName="%(NuSpecFiles.FullPath)"
               Prefix="d" Namespace="http://schemas.microsoft.com/packaging/2011/10/nuspec.xsd"
               XPath="/d:package/d:metadata/d:dependencies/d:dependency[@version='$version$']/@version"
               Value="$(PackageVersion)" />
    </Target>
    
    <ItemGroup>
        <!-- CSharpFunctionalExtensions -->
        <PackageBinaries Include='CSharpFunctionalExtensions\CSharpFunctionalExtensions.nuspec'>
            <Package>CSharpFunctionalExtensions</Package>
        </PackageBinaries>
        <PackageBinaries Include='$(OutDir)\CSharpFunctionalExtensions\4.5\CSharpFunctionalExtensions.dll'>
            <Package>CSharpFunctionalExtensions</Package>
            <Destination>lib\net45</Destination>
        </PackageBinaries>  
        <PackageBinaries Include='$(OutDir)\CSharpFunctionalExtensions\4.0\CSharpFunctionalExtensions.dll'>
            <Package>CSharpFunctionalExtensions</Package>
            <Destination>lib\net40</Destination>
        </PackageBinaries>  
        <PackageBinaries Include='$(OutDir)\CSharpFunctionalExtensions\3.5\CSharpFunctionalExtensions.dll'>
            <Package>CSharpFunctionalExtensions</Package>
            <Destination>lib\net35</Destination>
        </PackageBinaries>
    </ItemGroup>

    <Target Name="CopyBinaries" Inputs="%(PackageBinaries.Identity)" Outputs="_DO_IT_">
        <Message Text="Copying binaries for %(PackageBinaries.Package) ..." />
        <PropertyGroup>
            <PackageDir>$(NuGetPackagesDir)\%(PackageBinaries.Package)</PackageDir>
            <BinariesDestinationDir>$(PackageDir)\%(PackageBinaries.Destination)</BinariesDestinationDir>
        </PropertyGroup>
        <MakeDir Directories="$(BinariesDestinationDir)" />
        <Copy SourceFiles="%(PackageBinaries.Identity)" DestinationFolder="$(BinariesDestinationDir)\%(PackageBinaries.RecursiveDir)" />
    </Target>

    <Target Name="Clean">
        <RemoveDir Directories="$(PackageOutDir);$(NuGetPackagesDir)" />        
    </Target>    
</Project>