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Rackup 2.2 no longer depends on
webrick
, and our usage ofrackup
fails if we don't add a dependency onwebrick
. For details on therackup
change, see:rack/rackup#23
Note that the
rackup
maintainers recommend usingfalcon
orpuma
instead ofwebrick
. However,falcon
andpuma
are heavier weight.falcon
has lots of runtime dependencies andpuma
depends onnio4r
which has native code. As a result, it's more likely to hit installation issues for ElasticGraph users thanwebrick
. So for now we are sticking withwebrick
but I'm open to changing this in the future.