Patch csproj version.

appveyor.yml

@@ -1,6 +1,10 @@
 clone_depth: 1
 version: '{branch}-{build}'
 image: Visual Studio 2019
+dotnet_csproj:
+  patch: true
+  file: 'osu.Game\osu.Game.csproj' # Use wildcard when it's able to exclude Xamarin projects
+  version: '0.0.{build}'
 before_build:
   - ps: dotnet --info # Useful when version mismatch between CI and local
   - ps: nuget restore -verbosity quiet # Only nuget.exe knows both new (.NET Core) and old (Xamarin) projects

appveyor_deploy.yml

@@ -1,6 +1,10 @@
 clone_depth: 1
 version: '{build}'
 image: Visual Studio 2019
+dotnet_csproj:
+  patch: true
+  file: 'osu.Game\osu.Game.csproj' # Use wildcard when it's able to exclude Xamarin projects
+  version: $(APPVEYOR_REPO_TAG_NAME)
 before_build:
   - ps: dotnet --info # Useful when version mismatch between CI and local
   - ps: nuget restore -verbosity quiet # Only nuget.exe knows both new (.NET Core) and old (Xamarin) projects
@@ -8,7 +12,7 @@ test: off
 skip_non_tags: true
 configuration: Release
 build:
-  project: osu.sln
+  project: build\Desktop.proj # Skipping Xamarin Release that's slow and covered by fastlane
   parallel: true
   verbosity: minimal
 artifacts:

osu.Game/osu.Game.csproj

@@ -7,6 +7,7 @@
   <PropertyGroup Label="Nuget">
     <Title>osu!</Title>
     <PackageId>ppy.osu.Game</PackageId>
+    <Version>0.0.0</Version>
     <PackageIcon>icon.png</PackageIcon>
     <GeneratePackageOnBuild>true</GeneratePackageOnBuild>
   </PropertyGroup>