No Nuget package creation in Release mode for a .Net Framework project (Visual studio 2022)

[lgsndbox]

Hello,

With Visual Studio 2022, I'm trying to automate the building of a Nuget package for a .Net Framework library using MSBuild.
I've followed instructions at https://docs.microsoft.com/en-us/nuget/create-packages/creating-a-package-msbuild
I understand that a .Net Framework project is a non-SDK-Style project, and I added the necessary PackageOutputPath and the <PackageReference Include="NuGet.Build.Tasks.Pack" Version="x.x.x"/>.

I'm also using <GeneratePackageOnBuild>true</GeneratePackageOnBuild>.

My problem is the following:
The Nuget Package is created when I'm on Debug, but not when I'm on Release.

My question is:
How to have it built on Release?

For reference here is an expurged version of my .csproj file

<?xml version="1.0" encoding="utf-8"?>
<Project ToolsVersion="15.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
  <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
  <PropertyGroup>
    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
    <ProjectGuid>{[...]]}</ProjectGuid>
    <OutputType>Library</OutputType>
    <AppDesignerFolder>Properties</AppDesignerFolder>
    <RootNamespace>[...]</RootNamespace>
    <AssemblyName>[...]</AssemblyName>
    <TargetFrameworkVersion>v4.7.2</TargetFrameworkVersion>
    <FileAlignment>512</FileAlignment>
    <Deterministic>true</Deterministic>
    <PackageId>$(AssemblyName)</PackageId>
    <Version>[...]</Version>
    <Authors>[...]</Authors>
    <Company>[...]</Company>
	  <Title>[...]</Title>
    <Description>[...]</Description>
    <PackageOutputPath>bin\Package\</PackageOutputPath>
	  <PackageTags>[...]</PackageTags>
    <GeneratePackageOnBuild>true</GeneratePackageOnBuild>
    <NuGetPackageImportStamp>
    </NuGetPackageImportStamp>
  </PropertyGroup>
  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
    <DebugSymbols>true</DebugSymbols>
    <DebugType>full</DebugType>
    <Optimize>false</Optimize>
    <OutputPath>bin\Debug\</OutputPath>
    <DefineConstants>DEBUG;TRACE</DefineConstants>
    <ErrorReport>prompt</ErrorReport>
    <WarningLevel>4</WarningLevel>
    <CodeAnalysisRuleSet>[...]</CodeAnalysisRuleSet>
  </PropertyGroup>
  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
    <DebugType>pdbonly</DebugType>
    <Optimize>true</Optimize>
    <OutputPath>bin\Release\</OutputPath>
    <DefineConstants>TRACE</DefineConstants>
    <ErrorReport>prompt</ErrorReport>
    <WarningLevel>4</WarningLevel>
	<CodeAnalysisRuleSet>[...]</CodeAnalysisRuleSet>
  </PropertyGroup>
  <ItemGroup>
    <Reference [...]/>
    [...]
  </ItemGroup>
  <ItemGroup>
    <Compile [...]/>
    [...]
  </ItemGroup>
  <ItemGroup>
    <None [...]>
      [...]
  </ItemGroup>
  <ItemGroup>
    <Analyzer Include="..\packages\StyleCop.Analyzers.1.1.118\analyzers\dotnet\cs\StyleCop.Analyzers.CodeFixes.dll" />
    <Analyzer Include="..\packages\StyleCop.Analyzers.1.1.118\analyzers\dotnet\cs\StyleCop.Analyzers.dll" />
  </ItemGroup>
  <ItemGroup>
    <!-- ... -->
    <PackageReference Include="NuGet.Build.Tasks.Pack" Version="6.1.0" />
    <!-- ... -->
  </ItemGroup>
  <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
  <Import Project="..\packages\NuGet.Build.Tasks.Pack.6.1.0\build\NuGet.Build.Tasks.Pack.targets" Condition="Exists('..\packages\NuGet.Build.Tasks.Pack.6.1.0\build\NuGet.Build.Tasks.Pack.targets')" />
  <Target Name="EnsureNuGetPackageBuildImports" BeforeTargets="PrepareForBuild">
    <PropertyGroup>
      <ErrorText>This project references NuGet package(s) that are missing on this computer. Use NuGet Package Restore to download them.  For more information, see http://go.microsoft.com/fwlink/?LinkID=322105. The missing file is {0}.</ErrorText>
    </PropertyGroup>
    <Error Condition="!Exists('..\packages\NuGet.Build.Tasks.Pack.6.1.0\build\NuGet.Build.Tasks.Pack.targets')" Text="$([System.String]::Format('$(ErrorText)', '..\packages\NuGet.Build.Tasks.Pack.6.1.0\build\NuGet.Build.Tasks.Pack.targets'))" />
  </Target>
  <Target Name="PublishNugetPackage" AfterTargets="PostBuildEvent" Condition="'$(Configuration)'=='Release'">
    <Message Importance="High" Text="Publishing Nuget Package [...]..." />
    <Exec Command="PowerShell -ExecutionPolicy Bypass -File publish-nuget-[...].ps1" />
  </Target>
</Project>

I've tried to change the line
<Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
to
<Configuration Condition=" '$(Configuration)' == '' ">Release</Configuration>

But to no avail. I must say that I don't understand the purpose of this line anyway.
It says that if the property Configuration is not defined, define it to Debug, but I fail to understand why this has to be done.
[EDIT] I have found the answer to that part here: https://stackoverflow.com/questions/33744624/set-a-default-build-configuration-for-project

Thanks for any input.

[rainersigwald]

I'm going to convert this to an issue so that I can move it to NuGet.

[rainersigwald]

NuGet/Home#11763