Slowdown with ClojureScript 1.7.228

[mfikes]

With the latest release when using Natal, changes appear to take a couple of seconds to get updated in the simulator, as opposed to things being instant, according to the compilation log.

1.7.228 has a change to cause a lot more to be logged in verbose mode but even if verbosity is disabled, the 2-second compile cycle persists.

This may very well be an upstream regression with respect to WebDAV mounts—root cause is currently unknown and perhaps a bisect is in order.

[mfikes]

It appears the root cause is related to ClojureScript 1.7.228 employing a strategy of setting the last modified timestamp of copied files, which doesn't work with GCDWebServer (perhaps it isn't generally supported by WebDAV).

[sherbondy]

Relevant bit of WebDAV spec?
http://www.webdav.org/specs/rfc4918.html#etag
(Last-Modified information is right below that)

And GCDWebServer:
https://github.com/swisspol/GCDWebServer/blob/4360c4f7dbae42d49c45982d414867ba1fa59ba0/GCDWebDAVServer/GCDWebDAVServer.m#L371

[mfikes]

Relies on experimental changes upstream in compiler at https://github.com/mfikes/clojurescript/tree/set-last-modified