dcoughlin added a comment.

In http://reviews.llvm.org/D14345#281475, @xazax.hun wrote:

> Hi!
>
> I think it is great to support this model in these scripts. Do you plan to 
> check the list of the project urls in to the repository as well?


The project URLs are implicitly included in the download script (which is 
checked into the repository). So, for example, here is a sample script to 
download the OmniGroup project from github:

  curl -L -O 
https://github.com/omnigroup/OmniGroup/archive/c9074bc24c46516687acf44824ad8b00c2146ad6.zip
  unzip c9074bc24c46516687acf44824ad8b00c2146ad6.zip
  mv OmniGroup-c9074bc24c46516687acf44824ad8b00c2146ad6 CachedSource



> I have one minor high level note about the handling of patches. I think it in 
> case a project would need more modifications, it is cleaner to have a 
> separate patch file for each kind of them. Maybe it would be worth to support 
> patching the project with multiple patches? E.g. applying all patches with a 
> name prefix.


I originally did it this way but I found that became cumbersome.  In order to 
fix an issue I had to copy the original pristine source, apply all previous 
patches to that copy, then copy the patched tree, then fix the issue in the 
second copy and the diff first copy with the second to generate the incremental 
patch.

With the single-patch approach the workflow is: copy the pristine source, apply 
the patch to the copy, fix the issue in the copy, and diff the pristine and the 
(now fixed) copy.

Since these patches are checked into the repo, they can always be differed with 
older versions of the patch to see what has changed.


http://reviews.llvm.org/D14345



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