This directory contains scripts and files to package libsodium for .NET Core.

Note: The NuGet package is intended for the implementation of language bindings such as NSec. It does not provide a .NET API itself.

In .NET Core, it is customary to provide pre-compiled binaries for all platforms as NuGet packages. The purpose of the prepare.py script in this directory is to generate a Makefile that downloads and builds libsodium binaries for a number of platforms and assembles them in a NuGet package that can be uploaded to nuget.org.

• For Windows, binaries are obtained from download.libsodium.org.

• For macOS, binaries are extracted from the Homebrew libsodium bottle.

• For Linux, libsodium is compiled in Docker containers.

See prepare.py for the complete list of supported platforms.

The metadata for the NuGet package is located in libsodium.props.

Versioning

Version numbers for the packages for .NET Core consist of three components:

• libsodium version The libsodium version is in the format X.Y.Z.

• package revision It may be necessary to release more than one package for a libsodium version, e.g., when adding support for a new platform or if a release contains a broken binary. In this case, a package revision number is added as a fourth part to the libsodium version, starting at 1. For example, 1.0.16 is the initial release of the package for libsodium 1.0.16 and 1.0.16.5 is the fifth revision (sixth release) of that package.

• pre-release label If a package is a pre-release, a label is appended to the version number in -preview-## format where ## is the number of the pre-release, starting at 01. For example, 1.0.16-preview-01 is the first pre-release of the package for libsodium 1.0.16 and 1.0.16.5-preview-02 the second pre-release of the fifth revision of the package for libsodium 1.0.16.

Making a release

1. Update any existing Docker images.

2. Run python3 prepare.py <version> to generate the Makefile, where <version> is the package version number in the format described above.

3. Take a look at the generated Makefile. It uses sudo a few times.

4. Run make to download and build the binaries and create the NuGet package. You may need to install docker, make, curl, tar and unzip first.

5. Grab a cup of coffee. Downloading the Docker images and compiling the Linux binaries takes a while. When done, the NuGet package is output as a .nupkg file in the build directory.

6. Run make test to perform a quick test of the NuGet package. Verify that everything else in the .nupkg file is in place.

7. Publish the release by uploading the .nupkg file to nuget.org.