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.Net 5 support

Discussion in 'Experimental Scripting Previews' started by Lymdun, Mar 3, 2020.

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  1. JoshPeterson

    JoshPeterson

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    Sure! We're working on a Mono upgrade now. This will bring support for the .NET Core class libraries to Unity at the VM level. We're also work on adding support for using CoreCLR as the VM in place of Mono on some platforms. This latter work is more experimental and research-based - it may not prove to be something we can ship.

    The Mono upgrade is something we can and will ship.
     
    JoshPeterson, Mar 23, 2020
    #51
    ModLunar, Nemikolh, mischa2k and 2 others like this.

  2. Vincenzo

    Vincenzo

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    Will it land in 2020 LTS?
     
    Vincenzo, Mar 23, 2020
    #52

  3. JoshPeterson

    JoshPeterson

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    It is very unlikely that any .NET Core or .NET 5 support will land in 2020 LTS.
     
    JoshPeterson, Mar 23, 2020
    #53

  4. Vincenzo

    Vincenzo

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    And the new mono?
     
    Vincenzo, Mar 23, 2020
    #54

  5. JoshPeterson

    JoshPeterson

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    I think there is a chance that lands in 2020 LTS, but I'm not yet sure.
     
    JoshPeterson, Mar 23, 2020
    #55
    valarus, toomasio and Flurgle like this.

  6. Vincenzo

    Vincenzo

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    If it doesn't land in the LTS that is coming a year from now, it means it will be in something that is LTS 2 years from now. which makes it completely useless for production games. in the short to mid term. (probably even long term)
     
    Vincenzo, Mar 23, 2020
    #56
    Neonage likes this.

  7. Lymdun

    Lymdun

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    Anyway, thanks a lot @JoshPeterson for answering all our questions :)
     
    Lymdun, Mar 23, 2020
    #57
    SenseEater, toomasio and Flurgle like this.

  8. Lymdun

    Lymdun

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    Just in case, any new thing to report? :)
     
    Lymdun, May 24, 2020
    #58
    mischa2k likes this.

  9. JoshPeterson

    JoshPeterson

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    No, nothing new yet.
     
    JoshPeterson, May 26, 2020
    #59

  10. print_helloworld

    print_helloworld

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    Fascinating, give a good chunk of props to the researchers from me! @JoshPeterson
     
    print_helloworld, Jun 3, 2020
    #60
    SenseEater likes this.

  11. EternalClickbait

    EternalClickbait

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    Hey @JoshPeterson ,I'd like to use a .Net 5 (even though it's preview), for the cool features such as C#9 adn the things that come with it. I want to be able to use my .Net 5 library in unity, but it gives me errors because my library uses a higher version of 'System.Runtime'. Is Net 5 support coming in a future version, or will I have to wait until it's out of preview? It would be great if the Unity Team could add support to a alpha/beta version of Unity
     
    EternalClickbait, Jun 17, 2020
    #61

  12. JoshPeterson

    JoshPeterson

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    We don't have any plans for .NET 5 support to announce now. We do plan to support it in the future.
     
    JoshPeterson, Jun 17, 2020
    #62

  13. MaxGuernseyIII

    MaxGuernseyIII

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    @JoshPeterson What if we all keep asking for it every single day? Will that make it happen sooner?

    Seriously, though. This is an exciting development. Looking forward to it.
     
    MaxGuernseyIII, Jun 22, 2020
    #63

  14. JoshPeterson

    JoshPeterson

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    I don't think that will make it happen sooner. :) But anyone is free to continue asking. I'll share what information I can when I can.
     
    JoshPeterson, Jun 22, 2020
    #64
    ModLunar, PKras and MNNoxMortem like this.

  15. steego

    steego

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    ​
     
    steego, Jun 22, 2020
    #65
    ModLunar, xVergilx, Andresmonte and 5 others like this.

  16. Neonage

    Neonage

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    Will .NET 5.0 update provide Roslyn 2.0 with Source Generators feature?
     
    Neonage, Jun 25, 2020
    #66
    Nemikolh, GilbertoBitt and dadude123 like this.

  17. JoshPeterson

    JoshPeterson

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    I'm not sure yet. We're doing some work with source generators now (they are pretty cool!), but I can't say yet what will happen in the future with them.
     
    JoshPeterson, Jun 25, 2020
    #67
    Nemikolh, dadude123 and Neonage like this.

  18. MaxGuernseyIII

    MaxGuernseyIII

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    If you're going to support .NET 5, why bother with source generators? Why bother with a code editing experience at all? If I were you, I'd just release a NuGet package for dependencies and tell everyone to use Visual Studio to build .dlls for coding. It saves a lot of work for you and drives everyone to the premium coding experience available in the marketplace today.
     
    MaxGuernseyIII, Jun 25, 2020
    #68

  19. Baste

    Baste

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    There's exactly zero overlap with things that are a "premium experience" and things that involve having Visual Studio installed on your computer.
     
    Baste, Jun 25, 2020
    #69
    antosond, xVergilx, JohnnyA and 4 others like this.

  20. JoshPeterson

    JoshPeterson

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    We support a number of difference code editors. I don't expect that to change with .NET 5 support.
     
    JoshPeterson, Jun 26, 2020
    #70

  21. MaxGuernseyIII

    MaxGuernseyIII

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    Why do you need to support any editors at all? Why not just complete the story of building .NET assemblies the developer's editor of choice and consuming it in Unity?

    For game logic, you're a NuGet package away from that. I can imagine how things like Editor extensions and UCB will require a little more work but, in the long run, it would save you so much effort and us so many headaches.
     
    MaxGuernseyIII, Jun 26, 2020
    #71
    Qbit86 likes this.

  22. Ramobo

    Ramobo

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    I guess it has something to do with ease of use. Supposedly, part of the reason why it's easy to start programming with Unity is because you don't have to worry about setting up a class library project and whatnot, but I fail to see the appeal in that — it's not hard at all.
    That said, a nicely integrated option to manage everything yourself would be great. You can do this already, but something about it feels off. Maybe it's just bias. The primary benefit I see is that you wouldn't be stuck with whichever presumably outdated version of Roslyn that Unity is currently using, so you can immediately use new syntactic sugar. You could also use any .NET language, not just C#.
    But I start to question the feasibility of this when I consider the amount of fancy crap that Unity does behind the scenes (which, for example, prohibits the usage of constructors in MonoBehaviours). Who knows what can of worms you open by taking the self-compilation route.
     
    Ramobo, Jun 27, 2020
    #72
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  23. MaxGuernseyIII

    MaxGuernseyIII

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    Precisely.

    The main problem is accessing dependencies. To write a .NET Standard 2.0 library that depends upon the Unity stuff (so you can, for instance, build MonoBehaviour classes in a .dll), you need to dig up some .dlls. I always used to scrape them out of my editor build. Then I had to make sure my projects properly referenced these .dlls based on location. Then I had to make sure my build server would have them in that location.

    An alternative was to build to the Unity framework. At least it was an option with the Visual Studio. I can say about other IDEs. That's all fine and dandy until you are building on a hosted agent and you can't get the framework installed because you (rightly) do not have permissions.

    Neither of these options are practical. It's cheaper to just keep a layer of Unity-aware code in your Unity project, encapsulated behind abstractions, and pay the occasional costs associated with that strategy.

    The main thing missing is a NuGet package. A package that you can depend upon from a .NET Standard project that provides the dependencies you need to compile Unity-aware code.
     
    MaxGuernseyIII, Jun 27, 2020
    #73
    Qbit86 and Ramobo like this.

  24. valarus

    valarus

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    valarus, Jul 13, 2020
    #74
    Qbit86 likes this.

  25. Qbit86

    Qbit86

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    For Unity Tech it's probably worth to consider moving part of the engine to the managed side.
     
    Qbit86, Jul 14, 2020
    #75
    Neonage likes this.

  26. runner78

    runner78

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    Unity does it partially. But I'm curious to see how well Unity performs with .NET 5, both game and editor.
     
    runner78, Jul 15, 2020
    #76

  27. Lymdun

    Lymdun

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    Any news about it?
     
    Lymdun, Jul 30, 2020
    #77
    Qbit86 likes this.

  28. JoshPeterson

    JoshPeterson

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    The book is not yet closed on 2020 LTS, but I suspect that new Mono will not make it.
     
    JoshPeterson, Jul 31, 2020
    #78
    GilbertoBitt and Lymdun like this.

  29. JesOb

    JesOb

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    May be experimental support? :)
     
    JesOb, Jul 31, 2020
    #79

  30. JoshPeterson

    JoshPeterson

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    I don't expect event that to be ready.
     
    JoshPeterson, Jul 31, 2020
    #80

  31. EternalClickbait

    EternalClickbait

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    @JoshPeterson When you say
    Do you mean that the 2020 LTS versions of Unity most likely won't support mono, and will probably .Net or IL2CPP?
     
    EternalClickbait, Aug 1, 2020
    #81

  32. JoshPeterson

    JoshPeterson

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    No, sorry. I mean that it will not have an upgraded version of Mono. The 2020 LTS release will continue to support the same Mono and IL2CPP versions as the 2020.1 release.
     
    JoshPeterson, Aug 1, 2020
    #82

  33. EternalClickbait

    EternalClickbait

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    Cool, thanks.
     
    EternalClickbait, Aug 1, 2020
    #83

  34. gui_brawl

    gui_brawl

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    gui_brawl, Sep 2, 2020
    #84

  35. valarus

    valarus

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    Net 5 won't have full feature set this November. Features will be gradually added till Noveber 2021 until NET 6 LTS.
    So, it more likely for Unity to wait NET 6 LTS.
     
    valarus, Sep 2, 2020
    #85

  36. runner78

    runner78

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    There is actually no full feature set, which one can also say .NET 6 is not complete and will come with .NET 7 by November 2022. There was a new version every year, and an LTS every 2 years, which will be .NET 6. Is that what you meant?
     
    runner78, Sep 2, 2020
    #86
    valarus likes this.

  37. Kamyker

    Kamyker

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    Kamyker, Sep 15, 2020
    #87
    Qbit86 and Huszky like this.

  38. thorgeir

    thorgeir

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    Attached Files:

    thorgeir, Sep 15, 2020
    #88

  39. Qbit86

    Qbit86

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    Qbit86, Sep 15, 2020
    #89

  40. Ramobo

    Ramobo

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    Ramobo, Sep 16, 2020
    #90
    Qbit86 likes this.

  41. runner78

    runner78

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    Compiler only.
     
    runner78, Sep 16, 2020
    #91

  42. Kamyker

    Kamyker

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    What about types that were already in net core like Span @JoshPeterson ?

    If not then this C# 8 feature:
    Code (CSharp):
    1. Span<int> numbers = stackalloc[] { 1, 2, 3, 4, 5, 6 };
    also won't work without manually adding System.Memory nuget package that I guess isn't supported and may not work correctly.
     
    Kamyker, Sep 16, 2020
    #92
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  43. JoshPeterson

    JoshPeterson

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    Sure - C# 8 support was added by updating the version of Roslyn that Unity ships with.

    We do plan to support C# 9, although it looks like C# 9 will require the use of the .NET 5 class libraries, so we will need to add .NET 5 support first.

    This is certainly possible (we've done some internal prototyping), but we don't have any plans to announce in this respect now.
     
    JoshPeterson, Sep 16, 2020
    #93
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  44. JoshPeterson

    JoshPeterson

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    No, we don't support .NET Standard 2.1 yet, just .NET Standard 2.0.
     
    JoshPeterson, Sep 16, 2020
    #94

  45. JoshPeterson

    JoshPeterson

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    Yeah, sorry, I should not have written "all" for that blog post entry. I did not intend to be misleading. Instead I just did not think about the C# 8 features that require class library support which is in .NET Standard 2.1 or later.
     
    JoshPeterson, Sep 16, 2020
    #95

  46. Kamyker

    Kamyker

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    Were there any issues? I've upgraded it manually in 2020.1 to fix few C# 7.3 compiler bugs and be able to use 
    -a:RoslynAnalyzers\Microsoft.Unity.Analyzers.dll
    in csc.rsp and unity console (get rid of SerializedField false warnings).

    C# 8.0 works for me in 2020.1 by adding 
    -langversion:8.0
    to csc.rsp and 
    Directory.Build.props
    in project folder:
    Code (CSharp):
    1. <Project>
    2. <PropertyGroup>
    3.    <LangVersion>8.0</LangVersion>
    4. </PropertyGroup>
    5. </Project>
    Had to also delete .vs temp folder to get Directory.Build.props to load.
     
    Kamyker, Sep 16, 2020
    #96
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  47. JoshPeterson

    JoshPeterson

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    No, I don't recall any specific issues that happened here. We're not planning to back port to 2020.1 though, as that release won't be supported for too much longer. Our goal was to get the C# 8 support into the 2020 LTS release.
     
    JoshPeterson, Sep 16, 2020
    #97
    Kamyker likes this.

  48. Digika

    Digika

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    Man, stackalloc would be FIRE LIT
     
    Digika, Sep 26, 2020
    #98

  49. Baste

    Baste

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    stackalloc already works, you just have to put it into an int* instead of a span<int>
     
    Baste, Sep 26, 2020
    #99

  50. Kamyker

    Kamyker

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    Still doesn't work with stuff like Stream.Read.
     
    Kamyker, Sep 26, 2020
    #100
    Qbit86 likes this.
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