There are several different solutions for integrating NuGet into your build process depending on how much integration you require. In our case we wanted to use NuGet as package manager and allow developers to build their solutions even if they haven't got NuGet installed on their machine. For that to work we enabled package restore which adds the NuGet binaries to your solution folder and updates the project files. Note that NuGet doesn't always do the update of the project files correctly. In our case we found that some project files got updated but others didn't. To verify that the project was updated you will need to open the project file as XML file. To achieve this load the solution and right click the project in question and select unload project. Then right click the project again and select edit [PROJECT_NAME]. In the project file you should see
- A
RestorePackages property in the first propertygroup. This property should have the value true
- An
import statement at the very end of the project file. This import statement should point to the 'NuGet.targets file that accompanies the NuGet binary.
Below is an example of one of our project files (heavily edited)
<?xml version="1.0" encoding="utf-8"?>
<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
<PropertyGroup>
<SolutionDir Condition="'$(SolutionDir)' == '' or '$(SolutionDir)' == '*undefined*'">$(MSBuildProjectDirectory)\..</SolutionDir>
<ProjectGuid>{8B467882-7574-41B2-B3A8-2F34DA84BE82}</ProjectGuid>
<OutputType>Library</OutputType>
<RootNamespace>MyCompany.MyNamespace</RootNamespace>
<AssemblyName>MyCompany.MyNamespace</AssemblyName>
<!-- Allow NuGet to restore the packages if they are missing -->
<RestorePackages>true</RestorePackages>
</PropertyGroup>
<Import Project="$(SolutionDir)\BaseConfiguration.targets" />
<ItemGroup>
<Reference Include="System" />
<Reference Include="System.Core" />
</ItemGroup>
<ItemGroup>
<Compile Include="MyClass.cs" />
<!--
.... MANY MORE FILES HERE
-->
</ItemGroup>
<!-- Import the Nuget.targets file which integrates NuGet in the build process -->
<Import Project="$(SolutionDir)\.nuget\NuGet.targets" Condition="Exists('$(SolutionDir)\.nuget\NuGet.targets')" />
<!-- To modify your build process, add your task inside one of the targets below and uncomment it.
Other similar extension points exist, see Microsoft.Common.targets.
<Target Name="BeforeBuild">
</Target>
<Target Name="AfterBuild">
</Target>
-->
</Project>
The next step you'll need to take is to provide a solution level NuGet configuration file in which you'll indicate where the packages need to be 'installed' and what the URL of the package repository is. In our case the solution directory structure looks like:
(D) root
(D) build
(D) packages
(D) source
(D) .nuget
NuGet.config
NuGet.exe
NuGet.targets
(D) MyCoolProject
MyCoolProject.csproj
MyCoolProject.sln
(D) templates
NuGet.Config
Where (D) indicates a directory.
The NuGet.config file contains the following configuration settings.
<?xml version="1.0" encoding="utf-8"?>
<configuration>
<packageRestore>
<add key="enabled" value="True" />
</packageRestore>
<config>
<add key="repositorypath" value="packages" />
</config>
<packageSources>
<add key="OurPackageServer" value="PACKAGE_SERVER_ADDRESS" />
</packageSources>
<activePackageSource>
<add key="All" value="(Aggregate source)" />
</activePackageSource>
</configuration>
This configuration file indicates that package restore is enabled, that the repository path (where the packages are placed) is the packages directory and which package sources are active.
By placing a NuGet.config file in the root directory we can use the hierarchical configuration option with NuGet. This allows the individual solutions to override computer specific configurations. The other benefit is that this way we don't need to have NuGet installed on the build server (because the executable and the configurations are in the repository).
With this setup developers can build the solution from Visual Studio. The build should work fine on developers machines even if they don't have NuGet installed. Note however that they won't be able to add packages to a project without having NuGet installed in visual studio.
On the build server you can simply use MsBuild to build the solution which will automatically download the packages from your package repository. Visual Studio is not required to be installed on the build machine for that (just the .NET framework of your choice).