Latest GitVersionTask betas (since 5.0.0-beta3-44) fail on dotnet build

[NeilCross]

The last gitversiontask beta that builds for me is: beta3-35.
Reproducible on a dotnet new classlib.

This invocation builds as expected:

dotnet new classlib
dotnet add package gitversiontask -v 5.0.0-beta3-35
git init
git add -A
git commit -m "initial"
dotnet build

Whereas the below, referencing the next beta fails to build.

dotnet new classlib
dotnet add package gitversiontask -v 5.0.0-beta4-44
git init
git add -A
git commit -m "initial"
dotnet build

It has the following error:

Build FAILED.

obj\Debug\netstandard2.0\boop3.AssemblyInfo.cs(12,12): error CS0579: Duplicate 'System.Reflection.AssemblyFileVersionAttribute' attribute [D:\boop3\boop3.csproj]
obj\Debug\netstandard2.0\boop3.AssemblyInfo.cs(13,12): error CS0579: Duplicate 'System.Reflection.AssemblyInformationalVersionAttribute' attribute [D:\boop3\boop3.csproj]
obj\Debug\netstandard2.0\boop3.AssemblyInfo.cs(16,12): error CS0579: Duplicate 'System.Reflection.AssemblyVersionAttribute' attribute [D:\boop3\boop3.csproj]

and sure enough, the attributes are written to two class files.

λ  gci -r | sls AssemblyInformationalVersion
obj\Debug\netstandard2.0\AssemblyInfo_boop3_dgyyotex.v3l.g.cs:13:[assembly:                                                                   AssemblyInformationalVersion("0.1.0+0.Branch.master.Sha.2729dfa312463561d6310d72222982c7fdc4e672")]
obj\Debug\netstandard2.0\boop3.AssemblyInfo.cs:13:[assembly:                                                                                  System.Reflection.AssemblyInformationalVersionAttribute("0.1.0+0.Branch.master.Sha.2729dfa312463561d6310d72222982c7fdc4e672")]

This occurs for all betas up to the current latest preview (5.0.0-beta4-25).

dotnet --info is below:

.NET Core SDK (reflecting any global.json):
 Version:   2.2.400-preview-010195
 Commit:    67701f6169

Runtime Environment:
 OS Name:     Windows
 OS Version:  10.0.18362
 OS Platform: Windows
 RID:         win10-x64
 Base Path:   C:\Program Files\dotnet\sdk\2.2.400-preview-010195\

Host (useful for support):
  Version: 2.2.5
  Commit:  0a3c9209c0

.NET Core SDKs installed:
  2.1.104 [C:\Program Files\dotnet\sdk]
  2.1.202 [C:\Program Files\dotnet\sdk]
  2.1.403 [C:\Program Files\dotnet\sdk]
  2.1.500 [C:\Program Files\dotnet\sdk]
  2.1.502 [C:\Program Files\dotnet\sdk]
  2.1.503 [C:\Program Files\dotnet\sdk]
  2.1.600-preview-009472 [C:\Program Files\dotnet\sdk]
  2.1.600-preview-009497 [C:\Program Files\dotnet\sdk]
  2.1.600 [C:\Program Files\dotnet\sdk]
  2.1.601 [C:\Program Files\dotnet\sdk]
  2.1.602 [C:\Program Files\dotnet\sdk]
  2.1.700-preview-009601 [C:\Program Files\dotnet\sdk]
  2.1.700-preview-009618 [C:\Program Files\dotnet\sdk]
  2.1.700 [C:\Program Files\dotnet\sdk]
  2.1.800-preview-009677 [C:\Program Files\dotnet\sdk]
  2.2.100 [C:\Program Files\dotnet\sdk]
  2.2.200-preview-009748 [C:\Program Files\dotnet\sdk]
  2.2.200-preview-009804 [C:\Program Files\dotnet\sdk]
  2.2.200 [C:\Program Files\dotnet\sdk]
  2.2.201 [C:\Program Files\dotnet\sdk]
  2.2.202 [C:\Program Files\dotnet\sdk]
  2.2.300-preview-010050 [C:\Program Files\dotnet\sdk]
  2.2.300-preview-010067 [C:\Program Files\dotnet\sdk]
  2.2.400-preview-010195 [C:\Program Files\dotnet\sdk]

.NET Core runtimes installed:
  Microsoft.AspNetCore.All 2.1.5 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.All]
  Microsoft.AspNetCore.All 2.1.6 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.All]
  Microsoft.AspNetCore.All 2.1.7 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.All]
  Microsoft.AspNetCore.All 2.1.8 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.All]
  Microsoft.AspNetCore.All 2.1.9 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.All]
  Microsoft.AspNetCore.All 2.1.11 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.All]
  Microsoft.AspNetCore.All 2.2.0 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.All]
  Microsoft.AspNetCore.All 2.2.1 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.All]
  Microsoft.AspNetCore.All 2.2.2 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.All]
  Microsoft.AspNetCore.All 2.2.3 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.All]
  Microsoft.AspNetCore.All 2.2.5 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.All]
  Microsoft.AspNetCore.App 2.1.5 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 2.1.6 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 2.1.7 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 2.1.8 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 2.1.9 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 2.1.11 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 2.2.0 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 2.2.1 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 2.2.2 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 2.2.3 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 2.2.5 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
  Microsoft.NETCore.App 2.0.6 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
  Microsoft.NETCore.App 2.0.9 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
  Microsoft.NETCore.App 2.1.5 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
  Microsoft.NETCore.App 2.1.6 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
  Microsoft.NETCore.App 2.1.7 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
  Microsoft.NETCore.App 2.1.8 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
  Microsoft.NETCore.App 2.1.9 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
  Microsoft.NETCore.App 2.1.11 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
  Microsoft.NETCore.App 2.2.0 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
  Microsoft.NETCore.App 2.2.1 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
  Microsoft.NETCore.App 2.2.2 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
  Microsoft.NETCore.App 2.2.3 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
  Microsoft.NETCore.App 2.2.5 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]

To install additional .NET Core runtimes or SDKs:
  https://aka.ms/dotnet-download

[NeilCross]

Digging a little more, if i prevent the output of the version with the following in csproj

<GenerateAssemblyFileVersionAttribute>false</GenerateAssemblyFileVersionAttribute>
<GenerateAssemblyVersionAttribute>false</GenerateAssemblyVersionAttribute>
<GenerateAssemblyInformationalVersionAttribute>false</GenerateAssemblyInformationalVersionAttribute>   

The build succeeds, in this test. However the generated class, with the name like:

obj\Debug\netstandard2.0\AssemblyInfo_boop4_zrjgli21.gle.g.cs

will still contains the attributes.

This seems like a reasonable workaround, but i'm sure it shouldn't be the default configuration required for a new gitversion user.

[arturcic]

@NeilCross, can you give a try to this version ? Now the GenerateAssembly*Attribute are disabled if UpdateAssemblyInfo = true, that's the default

[NeilCross]

@arturcic, spot on, that release up the current beta 5 work as expected, thanks so much 👍