The required attribute "Condition" is empty or missing from the element <When>

[vbfox]

Description

After a paket install under Paket 3.01 (The same solution worked well with 2.62.1) invalid nodes are present in the csproj :

    <When Condition="">
      <ItemGroup>
        <Reference Include="Elasticsearch.Net">
          <HintPath>..\..\packages\Elasticsearch.Net\lib\Elasticsearch.Net.dll</HintPath>
          <Private>True</Private>
          <Paket>True</Paket>
        </Reference>
      </ItemGroup>
    </When>

Producing:

MSB4035: foo.csproj(10,5): The required attribute "Condition" is empty or missing from the element .

Repro steps

1. Get the files from https://gist.github.com/vbfox/94a1eb1f9fdff79af17f7b6168b61c8e
2. Run paket install.
3. Notice that <When Condition=""> is generated.

Expected behavior

A valid project is generated.

Actual behavior

MsBuild complains & refuse to build.

Known workarounds

The bug seem related to the framework filtering feature, removing framework: >= net451 from paket.dependencies generate a valid (if bloated) project file.

[forki]

this was related to runtime dependency stuff.

[vbfox]

That seem solved !