build.proj

<?xml version="1.0" encoding="utf-8"?>
<Project ToolsVersion="12.0" DefaultTargets="BuildAndTest" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
  <Import Project="dir.props" />

  <!-- required to build the projects in their specified order -->
  <PropertyGroup>
    <SerializeProjects>true</SerializeProjects>
  </PropertyGroup>
  
  <PropertyGroup>
    <!-- To disable the restoration of packages, set RestoreDuringBuild=false or pass /p:RestoreDuringBuild=false.-->
    <RestoreDuringBuild Condition="'$(RestoreDuringBuild)'==''">true</RestoreDuringBuild>
  </PropertyGroup>

  <Import Project="$(ToolsDir)VersionTools.targets" Condition="Exists('$(ToolsDir)VersionTools.targets')" />

  <ItemGroup>
    <Project Include="src\dirs.proj" />
    <Project Include="src\sign.builds" />
    <Project Include="src\packages.builds" />
  </ItemGroup>

  <Import Project="dir.targets" />

  <Import Project="dir.traversal.targets" />
  
  <Import Project="$(ToolsDir)clean.targets" />

  <PropertyGroup>
    <TraversalBuildDependsOn>
      BatchRestorePackages;
      ValidateExactRestore;
      CreateOrUpdateCurrentVersionFile;
      $(TraversalBuildDependsOn);
    </TraversalBuildDependsOn>
  </PropertyGroup>

  <Target Name="BatchRestorePackages" Condition="'$(RestoreDuringBuild)'=='true'" DependsOnTargets="VerifyDependencies">
    <Message Importance="High" Text="Restoring all packages..." />
    
    <Exec Command="$(DnuRestoreCommand) $(DnuRestoreDirs)" StandardOutputImportance="Low" CustomErrorRegularExpression="^Unable to locate .*" />

    <ItemGroup>
      <_allPackagesConfigs Include="$(MSBuildProjectDirectory)\src\**\packages.config"/>
    </ItemGroup>
    <Exec Condition="'@(_allPackagesConfigs)' != '' and '$(OSEnvironment)' == 'Windows_NT'" Command="$(NugetRestoreCommand) &quot;%(_allPackagesConfigs.FullPath)&quot;" StandardOutputImportance="Low" />
  </Target>

  <!-- Tasks from buildtools for easy project.json dependency updates -->
  <UsingTask TaskName="UpdatePackageDependencyVersion" AssemblyFile="$(BuildToolsTaskDir)Microsoft.DotNet.Build.Tasks.dll" />

  <Target Name="UpdatePackageDependencyVersion">
    <UpdatePackageDependencyVersion ProjectJsons="@(ProjectJsonFiles)"
                                    PackageId="$(PackageId)"
                                    OldVersion="$(OldVersion)"
                                    NewVersion="$(NewVersion)" />
  </Target>
  
  <!-- Task from buildtools that uses lockfiles to validate that packages restored are exactly what were specified. -->
  <UsingTask TaskName="ValidateExactRestore" AssemblyFile="$(BuildToolsTaskDir)Microsoft.DotNet.Build.Tasks.dll" />

  <Target Name="ValidateExactRestore"
          Condition="'$(AllowInexactRestore)'!='true'">
    <ValidateExactRestore ProjectLockJsons="@(ProjectJsonFiles->'%(RootDir)%(Directory)%(Filename).lock.json')" />
  </Target>

  <!-- Override RestorePackages from dir.traversal.targets and do a batch restore -->
  <Target Name="RestorePackages" DependsOnTargets="BatchRestorePackages" />

  <!-- Override clean from dir.traversal.targets and just remove the full BinDir -->
  <Target Name="CleanAllProjects">
    <RemoveDir Directories="$(BinDir)" />
  </Target>

</Project>