Does the ability to disable the check at a global and/or per call level
satisfy their requirements?

V/R,
William

On Mon, Apr 4, 2016 at 1:34 AM, Bill Deegan <[email protected]>
wrote:

> William,
>
> I've seen users with source and/or target as None.
> Usually they want to force an item to always build, or they don't
> understand that they are actually producing a file (or files) worthy of
> being the "target", or that they should/can create a token file for this
> purpose.
>
> So I guess your suggested change (which I think would be helpful for many)
> would affect them.
>
> -Bill
>
> On Sun, Apr 3, 2016 at 11:37 AM, William Blevins <[email protected]>
> wrote:
>
>> Krew,
>>
>> It seems that the issue of having dependencies of NoneType.None is rather
>> common and can be difficult to track down from personal experience. I think
>> we should consider adding code that throws an exception if NoneType.None is
>> added via env operations like Append, AppendUnique, Prepend, etc.
>>
>> For backwards compatibility reasons were someone wants NoneType.None, we
>> could have both a global check disable and/or an optional parameter to
>> disable checks.
>>
>> Any thoughts?
>>
>> V/R,
>> William
>>
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