On 25/05/16 10:23, Alex Sassmannshausen wrote:
>> The first, is that the hash is required, which I only had to compute
>> once, but if I wanted to change the package, I would have to update
>> this, which is prohibitive to local development. As an improvement to
>> this, could the hash be optional, and if it does not exist, be
>> calculated when the build is performed?
> 
> From my perspective, I think silently calculating a hash on the fly if
> it is not provided would be problematic: it might lead to laziness in
> completing the hash, which would undermine the security model of Guix
> (if I understand correctly).
> 
> But maybe an explicit flag setting the declaration to "dev-mode", might
> be useful?

In the use case I described, where you are packaging a local resource, I
don't think this is relevant, as you implicitly trust your own machine.
If you don't for some reason, you can just specify the hash.