`Project cannot be packaged` warning even when `<IsPackable>true</IsPackable>` in project file has defined

Steps to reproduce

I have a netcoreapp2.2 project which i’m trying to build by using dotnet (3.0.100) getting the warning for warning : This project cannot be packaged because packaging has been disabled. Add <IsPackable>true</IsPackable> to the project file to enable producing a package from this project.

Expected behavior

Ignore projects which has defined <IsPackable>true</IsPackable>.

Actual behavior

Now cli prints out a warning which should not.

Environment data

dotnet --info output: .NET Core SDK (reflecting any global.json): Version: 3.0.100 Commit: 04339c3a26

Runtime Environment: OS Name: ubuntu OS Version: 18.04 OS Platform: Linux RID: ubuntu.18.04-x64 Base Path: /usr/share/dotnet/sdk/3.0.100/

Host (useful for support): Version: 3.0.0 Commit: 95a0a61858

.NET Core SDKs installed: 2.1.105 [/usr/share/dotnet/sdk] 2.1.503 [/usr/share/dotnet/sdk] 2.2.103 [/usr/share/dotnet/sdk] 3.0.100 [/usr/share/dotnet/sdk]

.NET Core runtimes installed: Microsoft.AspNetCore.All 2.1.7 [/usr/share/dotnet/shared/Microsoft.AspNetCore.All] Microsoft.AspNetCore.All 2.2.1 [/usr/share/dotnet/shared/Microsoft.AspNetCore.All] Microsoft.AspNetCore.App 2.1.7 [/usr/share/dotnet/shared/Microsoft.AspNetCore.App] Microsoft.AspNetCore.App 2.2.1 [/usr/share/dotnet/shared/Microsoft.AspNetCore.App] Microsoft.AspNetCore.App 3.0.0 [/usr/share/dotnet/shared/Microsoft.AspNetCore.App] Microsoft.NETCore.App 2.0.7 [/usr/share/dotnet/shared/Microsoft.NETCore.App] Microsoft.NETCore.App 2.1.7 [/usr/share/dotnet/shared/Microsoft.NETCore.App] Microsoft.NETCore.App 2.2.1 [/usr/share/dotnet/shared/Microsoft.NETCore.App] Microsoft.NETCore.App 3.0.0 [/usr/share/dotnet/shared/Microsoft.NETCore.App]

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

[ivanparvaresh]

The problem was i was using global project properties which was applying to all projects:

<GeneratePackageOnBuild>true</GeneratePackageOnBuild>

By adding a condition it fixed:

<PropertyGroup Condition="$(IsPackable) == True">
<GeneratePackageOnBuild>true</GeneratePackageOnBuild>
</PropertyGroup>

[ivanparvaresh]

@dasMulli no dotnet pack. the problem is in dotnet build command. when i’m trying to build the solution which contains multiple projects, some of them has <IsPackagable>true</IsPackagable> some of them not or have <IsPackagable>false</IsPackagable> tags. but for those project which the target framework is netcoreapp2.2 fails ( if the the tag has set to false ) .