Specify C# version used by Nexus

[MalzSmith]

Currently there is no LangVersion specified on the project. This results in the C# version defaulting in 7.3. There are some features that are supported in C# 7.3, but not in 7.0, for example default literal expressions

[Casimir255]

The plugin which loads and compiles scripts is set to lastest.

I will merge if you update the commit to at least C# 8

[MalzSmith]

When trying to run the following script on our server

using NGPlugin.Config;
using Sandbox.Game.Entities;
using System.Collections.Generic;
using System.Linq;
using Sandbox.Game;
using Sandbox.Game.GameSystems.BankingAndCurrency;
using Sandbox.ModAPI;
using VRage.Game.ModAPI;
using VRageMath;

namespace NGPlugin.Scripts.ExampleScripts
{
    public class MoneyTaker : ScriptAPI
    {
        private readonly List<IMyPlayer> _playersCache = new List<IMyPlayer>(1);
        private readonly Dictionary<long, IMyPlayer> _playersById = new Dictionary<long, IMyPlayer>();

        public override bool InboundGate(MyCubeGrid BiggestGrid, List<MyCubeGrid> AllGrids, GateAPI Gate, List<long> allPlayers, ref Vector3D gridSpawnPos, ref byte targetServer)
        {
            foreach (var grid in AllGrids)
            {
                var owner = GetOwner(grid);
                if (owner == null)
                {
                    continue;
                }

                MyBankingSystem.ChangeBalance(owner.IdentityId, -1);
            }


            return true;
        }

        private IMyPlayer GetOwner(MyCubeGrid grid)
        {
            var ownerId = grid.BigOwners.FirstOrDefault();
            if (ownerId == default)
            {
                return null;
            }
            
            var found = _playersById.TryGetValue(ownerId, out IMyPlayer player);

            if (found)
            {
                return player;
            }
            
            _playersCache.Clear();
            MyAPIGateway.Multiplayer.Players.GetPlayers(_playersCache, p => p.IdentityId == ownerId);
            if (!_playersCache.Any())
            {
                return null;
            }
            
            player = _playersCache.First();
            _playersById.Add(ownerId, player);

            _playersCache.Clear();
            
            return player;
        }
        
        
        
        public override void OutboundGate(IEnumerable<MyCubeGrid> grids, GateAPI fromGate)
        {
            

        }
    }
}

We received this error:

06:22:10.0283 [ERROR]  CompiledScriptAPI: CS8107: Feature 'default literal' is not available in C# 7.0. Please use language version 7.1 or greater. 37,27
06:22:10.0283 [FATAL]  CompiledScriptAPI: Couldnt compile script MoneyTaker!
06:22:10.0283 [INFO]   ScriptCompiler: Compiled 13 out of 14 received scripts!

Are you sure that these C# features are available?

(This was on the 27th of January)