TEST_PROGRAM='using System;
using System.Runtime.InteropServices;

static class Program
{
    [DllImport("libsodium")]
    static extern int sodium_init();

    static int Main()
    {
        int error = sodium_init();
        Console.WriteLine(error == 0
            ? "ok"
            : "error: sodium_init() returned {0}", error);
        return error == 0 ? 0 : 1;
    }
}
'

dotnet --info
cd ~
dotnet new console --name Test
cd Test
echo "$TEST_PROGRAM" > Program.cs
dotnet add package libsodium --version $1 --source /io/packages
dotnet restore
dotnet run