Clojurians Log v2

Thanks, @bhauman! I tried with cljs.main, and it delivers fast recompiles:

$ clj -M:figwheel -m cljs.main --compile-opts env/figwheel/resources/cljsmain-all.edn --watch src/cljs --watch src/cljc --compile
[...]
Copying file: [lots of files...]
... done. Elapsed 27.26382128 seconds
Watching paths: /Users/martin/c/v/foo/src/cljs, /Users/martin/c/v/foo/src/cljc
Change detected, recompiling ...
Compiling /Users/martin/c/v/foo/src/cljc/foo/views/home_page.cljc to target/cljsbuild/public/js/foo/views/home_page.js
Copying file:/Users/martin/c/v/foo/src/cljc/foo/views/home_page.cljc to target/cljsbuild/public/js/foo/views/home_page.cljc
... done. Elapsed 4.864356377 seconds

[Figwheel:FINE] Detected changed cljs files:  ("/Users/martin/c/v/foo/src/cljc/foo/views/home_page.cljc")
[Figwheel] Compiling build all to "target/cljsbuild/public/js"
[Figwheel] Successfully compiled build all to "target/cljsbuild/public/js" in 482.354 seconds.
[Figwheel:FINE] Reloading clj files:  ("/Users/martin/c/v/foo/src/cljc/foo/views/home_page.cljc" "/Users/martin/c/v/foo/src/cljc/foo/views/home_page.cljc")
[Figwheel:FINE] Detected changed cljs files:  ("/Users/martin/c/v/foo/src/cljc/foo/views/home_page.cljc" "/Users/martin/c/v/foo/src/cljc/foo/views/home_page.cljc")
[Figwheel] Compiling build all to "target/cljsbuild/public/js"
[Figwheel] Successfully compiled build all to "target/cljsbuild/public/js" in 6.114 seconds.
[Figwheel:FINE] Reloading clj files:  ("/Users/martin/c/v/foo/src/cljc/foo/views/home_page.cljc")
[Figwheel:FINE] Detected changed cljs files:  ("/Users/martin/c/v/foo/src/cljc/foo/views/home_page.cljc")
[Figwheel] Compiling build all to "target/cljsbuild/public/js"
[Figwheel] Successfully compiled build all to "target/cljsbuild/public/js" in 5.835 seconds.

By the way, hot reloading does work with :modules, for me at least (provided the recompile finishes).

@msolli this is interesting, I think the aot-cache is what is happening here

figwheel disables it because it can cause big headaches. if you enable the aot-cache I think your compile times will be fixed up

there compile times should be the same for all of these setups

OK, so I’ve enabled AOT cache with :aot-cache true in the compiler options. I also wiped the ~/.cljs/.aot_cache directory just in case. I experience the same phenomenon: The initial compile takes 40 seconds, the first recompile takes 6-8 minutes, the subsequent recompiles takes 6 seconds.

I’m on Clojurescript 1.10.844, by the way. I’ve tried downgrading to 1.10.764, but the problem persisted.

I wish I knew how to get more insight in what the computer is doing during those 6-8 minutes. It seems to be mostly waiting, since there is hardly any CPU activity. I’ve rebooted it, and there’s not much else going on.

Just tried one more thing: I copied the config to a foo.cljs.edn file and ran lein fig -- --build foo --repl (ie. not using figwheel.main.api). It showed the same phenomenon of around 6 minutes recompile time after the first file change.

@msolli sorry for not getting back sooner

If the compile has started then it should be compiling during that time

another thing to look at is the options that are provided to the compiler by figwheel

you can get the compile options by providing the -pc cli option (before the other options) and it will print out the compile options being send to the cljs compiler

but it that doesn’t provide some insight then I’d say that there is probably some strange thing going on with paths or there is a bug in the dependency traversal algorithm such that its recurring on itself

but I’d have to really look at what figwheel is doing to make modules reloadable

@bhauman Thanks for getting back to me – much obliged! Here are the compiler options:

{:output-dir      "target/cljsbuild/public/js",
 :closure-defines {figwheel.core/load-warninged-code true,
                   figwheel.repl/connect-url         "<ws://localhost:9500/figwheel-connect?fwprocess=4cb3df&amp;fwbuild=all>"},
 :modules         {,,,},
 :optimizations   :none,
 :aot-cache       true,
 :warnings        {:munged-namespace false},
 :preloads        [vilect.dev
                   figwheel.core
                   figwheel.main
                   figwheel.repl.preload
                   devtools.preload
                   figwheel.main.system-exit
                   figwheel.main.css-reload],
 :asset-path      "/js",
 :repl-requires   ([figwheel.repl :refer-macros [conns focus]]
                   [figwheel.main
                    :refer-macros
                    [stop-builds start-builds build-once reset clean status]]
                   [cljs.pprint :refer [pprint] :refer-macros [pp]]
                   [cljs.repl :refer-macros [source doc find-doc apropos dir pst]])}

:vilect.views.organization.processes.new
  {:output-to
   "target/cljsbuild/public/js/vilect.views.organization.processes.new.js",
   :entries #{vilect.views.organization.processes.new}},