>
> I think I already proposed it some time ago (after someone told me that 
> Google doesn't actually use them) and got some feedback that they make 
> their build faster.
> A quick search in the groups gave me 
> https://groups.google.com/d/msg/google-web-toolkit/O8HaPzExxhc/X16AnKZI2JAJ, 
> but nothing more.
>

Does anybody know how much compile time is actually saved by using gwtar 
files? I have no idea and generally I don't care if a production compile 
takes 10 or 15 minutes.

It is just a bit unfortunate that the build file needs to be in sync with 
GWT module inheritance but maybe it is possible to write a gwtar tool that 
always does the right thing based on the given module inheritance (naive 
thoughts: generate a gwtar per graph clique or start with a defined module 
and do a breadth first traversal to generate one gwtar per module). Then 
users who want to use that feature could run the tool, but the GWT build 
would not do so by default. Or GWT does continue to generate them but 
packages the result in a different jar that is an optional dependency.

At the end I am only interested in having small SDK download sizes as I use 
SNAPSHOT builds in private projects. So I am also fine with just getting 
rid of gwtar files.

-- J.

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