• Use the GitLab endpoint for NuGet Packages
• Add the Package Registry as a source for NuGet packages
  • Add a source with the NuGet CLI
    • Project-level endpoint
    • Group-level endpoint
  • Add a source with Visual Studio
    • Project-level endpoint
    • Group-level endpoint
  • Add a source with the .NET CLI
    • Project-level endpoint
    • Group-level endpoint
  • Add a source with a configuration file
    • Project-level endpoint
    • Group-level endpoint
• Publish a NuGet package
  • Publish a package with the NuGet CLI
  • Publish a package with the .NET CLI
  • Publish a NuGet package by using CI/CD
  • Publishing a package with the same name or version
• Install packages
  • Install a package with the NuGet CLI
  • Install a package with the .NET CLI
• Symbol packages
• Supported CLI commands
• Example project
• Troubleshooting
  • Clear NuGet cache
  • Error publishing or Invalid Package: Failed metadata extraction error messages when trying to publish NuGet packages in a Docker-based GitLab installation

NuGet packages in the Package Registry

Publish NuGet packages in your project’s Package Registry. Then, install the packages whenever you need to use them as a dependency.

The Package Registry works with:

• NuGet CLI
• .NET Core CLI
• Visual Studio

For documentation of the specific API endpoints that these clients use, see the NuGet API documentation.

Learn how to install NuGet.

Use the GitLab endpoint for NuGet Packages

To use the GitLab endpoint for NuGet Packages, choose an option:

• Project-level: Use when you have few NuGet packages and they are not in the same GitLab group.
• Group-level: Use when you have many NuGet packages in different projects within the same GitLab group.

Some features such as publishing a package are only available on the project-level endpoint.

When asking for versions of a given NuGet package name, the GitLab Package Registry returns a maximum of 300 most recent versions.

Do not use authentication methods other than the methods documented here. Undocumented authentication methods might be removed in the future.

Add the Package Registry as a source for NuGet packages

To publish and install packages to the Package Registry, you must add the Package Registry as a source for your packages.

Prerequisites:

• Your GitLab username.
• A personal access token or deploy token. For repository authentication:
  • You can generate a personal access token with the scope set to api.
  • You can generate a deploy token with the scope set to read_package_registry, write_package_registry, or both.
• A name for your source.
• Depending on the endpoint level you use, either:
  • Your project ID, which is found on your project’s home page.
  • Your group ID, which is found on your group’s home page.

You can now add a new source to NuGet with:

• NuGet CLI
• Visual Studio
• .NET CLI
• Configuration file

Add a source with the NuGet CLI

Project-level endpoint

A project-level endpoint is required to publish NuGet packages to the Package Registry. A project-level endpoint is also required to install NuGet packages from a project.

To use the project-level NuGet endpoint, add the Package Registry as a source with nuget:

nuget source Add -Name <source_name> -Source "https://gitlab.example.com/api/v4/projects/<your_project_id>/packages/nuget/index.json" -UserName <gitlab_username or deploy_token_username> -Password <gitlab_personal_access_token or deploy_token>

• <source_name> is the desired source name.

For example:

nuget source Add -Name "GitLab" -Source "https://gitlab.example.com/api/v4/projects/10/packages/nuget/index.json" -UserName carol -Password 12345678asdf

Group-level endpoint

To install a NuGet package from a group, use a group-level endpoint.

To use the group-level NuGet endpoint, add the Package Registry as a source with nuget:

nuget source Add -Name <source_name> -Source "https://gitlab.example.com/api/v4/groups/<your_group_id>/-/packages/nuget/index.json" -UserName <gitlab_username or deploy_token_username> -Password <gitlab_personal_access_token or deploy_token>

• <source_name> is the desired source name.

For example:

nuget source Add -Name "GitLab" -Source "https://gitlab.example.com/api/v4/groups/23/-/packages/nuget/index.json" -UserName carol -Password 12345678asdf

Add a source with Visual Studio

Project-level endpoint

A project-level endpoint is required to publish NuGet packages to the Package Registry. A project-level endpoint is also required to install NuGet packages from a project.

To use the project-level NuGet endpoint, add the Package Registry as a source with Visual Studio:

1. Open Visual Studio.
2. In Windows, select Tools > Options. On macOS, select Visual Studio > Preferences.
3. In the NuGet section, select Sources to view a list of all your NuGet sources.
4. Select Add.

5. Complete the following fields:

   • Name: Name for the source.
   • Source: https://gitlab.example.com/api/v4/projects/<your_project_id>/packages/nuget/index.json, where <your_project_id> is your project ID, and gitlab.example.com is your domain name.
6. Select Save.

7. When you access the package, you must enter your Username and Password:

   • Username: Your GitLab username or deploy token username.
   • Password: Your personal access token or deploy token.

The source is displayed in your list.

If you get a warning, ensure that the Source, Username, and Password are correct.

Group-level endpoint

To install a package from a group, use a group-level endpoint.

To use the group-level NuGet endpoint, add the Package Registry as a source with Visual Studio:

1. Open Visual Studio.
2. In Windows, select Tools > Options. On macOS, select Visual Studio > Preferences.
3. In the NuGet section, select Sources to view a list of all your NuGet sources.
4. Select Add.

5. Complete the following fields:

   • Name: Name for the source.
   • Source: https://gitlab.example.com/api/v4/groups/<your_group_id>/-/packages/nuget/index.json, where <your_group_id> is your group ID, and gitlab.example.com is your domain name.
6. Select Save.

7. When you access the package, you must enter your Username and Password.

   • Username: Your GitLab username or deploy token username.
   • Password: Your personal access token or deploy token.

The source is displayed in your list.

If you get a warning, ensure that the Source, Username, and Password are correct.

Add a source with the .NET CLI

Project-level endpoint

A project-level endpoint is required to publish NuGet packages to the Package Registry. A project-level endpoint is also required to install NuGet packages from a project.

To use the project-level NuGet endpoint, add the Package Registry as a source with nuget:

dotnet nuget add source "https://gitlab.example.com/api/v4/projects/<your_project_id>/packages/nuget/index.json" --name <source_name> --username <gitlab_username or deploy_token_username> --password <gitlab_personal_access_token or deploy_token>

• <source_name> is the desired source name.
• --store-password-in-clear-text might be necessary depending on your operating system.

For example:

dotnet nuget add source "https://gitlab.example.com/api/v4/projects/10/packages/nuget/index.json" --name gitlab --username carol --password 12345678asdf

Group-level endpoint

To install a NuGet package from a group, use a group-level endpoint.

To use the group-level NuGet endpoint, add the Package Registry as a source with nuget:

dotnet nuget add source "https://gitlab.example.com/api/v4/groups/<your_group_id>/-/packages/nuget/index.json" --name <source_name> --username <gitlab_username or deploy_token_username> --password <gitlab_personal_access_token or deploy_token>

• <source_name> is the desired source name.
• --store-password-in-clear-text might be necessary depending on your operating system.

For example:

dotnet nuget add source "https://gitlab.example.com/api/v4/groups/23/-/packages/nuget/index.json" --name gitlab --username carol --password 12345678asdf

Add a source with a configuration file

Project-level endpoint

A project-level endpoint is required to:

• Publish NuGet packages to the Package Registry.
• Install NuGet packages from a project.

To use the project-level Package Registry as a source for .NET:

1. In the root of your project, create a file named nuget.config.

2. Add this content:

   <?xml version="1.0" encoding="utf-8"?>
   <configuration>
    <packageSources>
        <clear />
        <add key="gitlab" value="https://gitlab.example.com/api/v4/projects/<your_project_id>/packages/nuget/index.json" />
    </packageSources>
    <packageSourceCredentials>
        <gitlab>
            <add key="Username" value="%GITLAB_PACKAGE_REGISTRY_USERNAME%" />
            <add key="ClearTextPassword" value="%GITLAB_PACKAGE_REGISTRY_PASSWORD%" />
        </gitlab>
    </packageSourceCredentials>
   </configuration>
   

3. Configure the necessary environment variables:

   export GITLAB_PACKAGE_REGISTRY_USERNAME=<gitlab_username or deploy_token_username>
   export GITLAB_PACKAGE_REGISTRY_PASSWORD=<gitlab_personal_access_token or deploy_token>
   

Group-level endpoint

To install a package from a group, use a group-level endpoint.

To use the group-level Package Registry as a source for .NET:

1. In the root of your project, create a file named nuget.config.

2. Add this content:

   <?xml version="1.0" encoding="utf-8"?>
   <configuration>
    <packageSources>
        <clear />
        <add key="gitlab" value="https://gitlab.example.com/api/v4/groups/<your_group_id>/-/packages/nuget/index.json" />
    </packageSources>
    <packageSourceCredentials>
        <gitlab>
            <add key="Username" value="%GITLAB_PACKAGE_REGISTRY_USERNAME%" />
            <add key="ClearTextPassword" value="%GITLAB_PACKAGE_REGISTRY_PASSWORD%" />
        </gitlab>
    </packageSourceCredentials>
   </configuration>
   

3. Configure the necessary environment variables:

   export GITLAB_PACKAGE_REGISTRY_USERNAME=<gitlab_username or deploy_token_username>
   export GITLAB_PACKAGE_REGISTRY_PASSWORD=<gitlab_personal_access_token or deploy_token>
   

Publish a NuGet package

Prerequisite:

• Set up the source with a project-level endpoint.

When publishing packages:

• The Package Registry on GitLab.com can store up to 5 GB of content. This limit is configurable for self-managed GitLab instances.
• If you publish the same package with the same version multiple times, each consecutive upload is saved as a separate file. When installing a package, GitLab serves the most recent file.
• When publishing packages to GitLab, they aren’t displayed in the packages user interface of your project immediately. It can take up to 10 minutes to process a package.

Publish a package with the NuGet CLI

Prerequisites:

• A NuGet package created with NuGet CLI.
• Set a project-level endpoint.

Publish a package by running this command:

nuget push <package_file> -Source <source_name>

• <package_file> is your package filename, ending in .nupkg.
• <source_name> is the source name used during setup.

Publish a package with the .NET CLI

Prerequisites:

• A NuGet package created with .NET CLI.
• Set a project-level endpoint.

Publish a package by running this command:

dotnet nuget push <package_file> --source <source_name>

• <package_file> is your package filename, ending in .nupkg.
• <source_name> is the source name used during setup.

For example:

dotnet nuget push MyPackage.1.0.0.nupkg --source gitlab

Publish a NuGet package by using CI/CD

If you’re using NuGet with GitLab CI/CD, a CI job token can be used instead of a personal access token or deploy token. The token inherits the permissions of the user that generates the pipeline.

This example shows how to create a new package each time the main branch is updated:

1. Add a deploy job to your .gitlab-ci.yml file:

   image: mcr.microsoft.com/dotnet/core/sdk:3.1
   
   stages:
     - deploy
   
   deploy:
     stage: deploy
     script:
       - dotnet pack -c Release
       - dotnet nuget add source "${CI_API_V4_URL}/projects/${CI_PROJECT_ID}/packages/nuget/index.json" --name gitlab --username gitlab-ci-token --password $CI_JOB_TOKEN --store-password-in-clear-text
       - dotnet nuget push "bin/Release/*.nupkg" --source gitlab
     only:
       - main
     environment: production
   

2. Commit the changes and push it to your GitLab repository to trigger a new CI/CD build.

Publishing a package with the same name or version

When you publish a package with the same name or version as an existing package, the existing package is overwritten.

Install packages

If multiple packages have the same name and version, when you install a package, the most recently-published package is retrieved.

To install a NuGet package from the Package Registry, you must first add a project-level or group-level endpoint.

Install a package with the NuGet CLI

Install the latest version of a package by running this command:

nuget install <package_id> -OutputDirectory <output_directory> \
  -Version <package_version> \
  -Source <source_name>

• <package_id> is the package ID.
• <output_directory> is the output directory, where the package is installed.
• <package_version> The package version. Optional.
• <source_name> The source name. Optional.

Install a package with the .NET CLI

Install the latest version of a package by running this command:

dotnet add package <package_id> \
       -v <package_version>

• <package_id> is the package ID.
• <package_version> is the package version. Optional.

Symbol packages

If you push a .nupkg, symbol package files in the .snupkg format are uploaded automatically. You can also push them manually:

nuget push My.Package.snupkg -Source <source_name>

Consuming symbol packages is not yet guaranteed using clients such as Visual Studio or dotnet-symbol. The .snupkg files are available for download through the UI or the API.

Follow the NuGet symbol package issue for further updates.

Supported CLI commands

The GitLab NuGet repository supports the following commands for the NuGet CLI (nuget) and the .NET CLI (dotnet):

• nuget push: Upload a package to the registry.
• dotnet nuget push: Upload a package to the registry.
• nuget install: Install a package from the registry.
• dotnet add: Install a package from the registry.

Example project

For an example, see the Guided Exploration project Utterly Automated Software and Artifact Versioning with GitVersion. This project:

• Generates NuGet packages by the msbuild method.
• Generates NuGet packages by the nuget.exe method.
• Uses GitLab releases and release-cli in connection with NuGet packaging.
• Uses a tool called GitVersion to automatically determine and increment versions for the NuGet package in complex repositories.

You can copy this example project to your own group or instance for testing. See the project page for more details on what other GitLab CI patterns are demonstrated.

Troubleshooting

Clear NuGet cache

To improve performance, NuGet caches files related to a package. If you encounter issues, clear the cache with this command:

nuget locals all -clear

Error publishing or Invalid Package: Failed metadata extraction error messages when trying to publish NuGet packages in a Docker-based GitLab installation

Webhook requests to local network addresses are blocked to prevent exploitation of internal web services. If you get Error publishing or Invalid Package messages when you try to publish NuGet packages, change your network settings to allow webhook and integration requests to the local network.