REBL Setup

[thecontinium]

Thanks for the latest release.

I am trying to get REBL working and have it configured as follows on a Mac with clojure installed by homebrew and:

dep.edn from (https://github.com/cognitect-labs/REBL-distro/wiki/Java-11-Usage)

{:deps {}
 :aliases
       {:rebl
        {:extra-deps
         {org.clojure/clojure {:mvn/version "1.10.1"}
          org.clojure/core.async {:mvn/version "0.4.500"}
          com.cognitect/rebl {:local/root "resources/REBL-0.9.220.jar"}
          org.openjfx/javafx-fxml     {:mvn/version "11.0.1"}
          org.openjfx/javafx-controls {:mvn/version "11.0.1"}
          org.openjfx/javafx-swing    {:mvn/version "11.0.1"}
          org.openjfx/javafx-base     {:mvn/version "11.0.1"}
          org.openjfx/javafx-web      {:mvn/version "11.0.1"}}
         :main-opts  ["-m" "cognitect.rebl"]}}}

and run the command:

clj -J-Dclojure.server.jvm="{:port 5678 :accept clojure.core.server/io-prepl}" -R:rebl

along with a clojure.edn

{:conns
 {:dev  {:port 5678
         :hooks {:connect! (fn [conn]
                            #?(:clj
                               (do
                                 (require 'cognitect.rebl)
                                 ((resolve 'cognitect.rebl/ui)))))
                 :result! (fn [{:keys [code result]}]
                           #?(:clj (cognitect.rebl/submit code result)))}}}

The REBL gui is displayed when I edit a new test.clj in neovim but no results are displayed in the REBL.

Does the setup look correct ?

Incidentally I get the same problem from the prepl unless I start a rebl directly from the command line with:

clj -J-Dclojure.server.jvm="{:port 5678 :accept clojure.core.server/io-prepl}" -R:rebl -m cognitect.rebl

rather than from within the prepl with:

clj -J-Dclojure.server.jvm="{:port 5678 :accept clojure.core.server/io-prepl}" -R:rebl 
(cognitect.rebl/ui)

any advice welcome. cheers.

[dharrigan]

Hi,

This is my clojure deps.edn config, notice the :main-ops is not present:

  :rebl {:extra-deps {org.clojure/core.async {:mvn/version "RELEASE"}
                      org.clojure/data.csv {:mvn/version "RELEASE"}
                      org.clojure/data.json {:mvn/version "RELEASE"}
                      org.yaml/snakeyaml {:mvn/version "RELEASE"}
                      com.cognitect/rebl {:local/root "/home/david/development/workspaces/personal/clojure/rebl/rebl"}
                      org.openjfx/javafx-fxml     {:mvn/version "RELEASE"}
                      org.openjfx/javafx-controls {:mvn/version "RELEASE"}
                      org.openjfx/javafx-graphics {:mvn/version "RELEASE"}
                      org.openjfx/javafx-media    {:mvn/version "RELEASE"}
                      org.openjfx/javafx-swing    {:mvn/version "RELEASE"}
                      org.openjfx/javafx-base     {:mvn/version "RELEASE"}
                      org.openjfx/javafx-web      {:mvn/version "RELEASE"}}}

Then my conjure.edn config:

{:conns
 {:local
  {:port 55555}}
 :hooks
 {:connect! (fn [conn]
              (do (require 'cognitect.rebl)
                  ((resolve 'cognitect.rebl/ui))))
  :result! (fn [{:keys [code result]}]
             (cognitect.rebl/submit code result))}}

This works for me (once I'm in neovim, and I've connected to local and I eval an expression).

Hope that helps!

[Olical]

Ah, that'll probably do it! I don't think you want the :main-opts since that starts a REBL UI through some other thread potentially? Leaving it up to Conjure to start is probably for the best, if that solves your issue I think the caveat will need to go into the README.

The REBL docs are correct other than that one thing I guess? (in the context of using it with Conjure)

[thecontinium]

This setup works - thanks.
In the current readme

:result! (fn [{:keys [code result]}]
                           #?(:clj (cognitect.rebl/submit code result)))}}}}

does not work for me.

This does:

:result! (fn [{:keys [code result]}]
             (cognitect.rebl/submit code result))}}

[thecontinium]

If I execute this:

(defn fib [x]
  (loop [n x result '(1 0)]
    (if (> n 1)
      (recur (- n 1) (conj result (+ (first result) (first (rest result)))))
      (rest (reverse result))
      )))

it has output in the REBL.
Followed by: (fib 10) gives no output to the REBL.

Can you see any reason for this ?

cheers

[Olical]

Hmm, the reader conditional not working isn't great, I'll need to check that out. Really I don't need to recommend it since one conn is one language. I was mainly using reader conditionals in testing when I had the hooks at the top level so every connection got REBL if it was Clojure.

A fun experiment but not really a common use case.

With regards to the fib call: I'm really not sure... maybe lazy sequences aren't rendering correctly? I'll try to have a look soon. This issue will remain open until:

• Documentation updated to show a minimal working REBL scenario.
• Reader conditionals in hooks investigated. (I think some hooks will work, others won't depending on your current file name ending in .cljc or not.)
• Your fib example is working.

[thecontinium]

Thanks. Holler if you want me to test. Cheers

…

-- The Continium On 16 October 2019 at 16:35:50, Oliver Caldwell (notifications@github.com<mailto:notifications@github.com>) wrote: Hmm, the reader conditional not working isn't great, I'll need to check that out. Really I don't need to recommend it since one conn is one language. I was mainly using reader conditionals in testing when I had the hooks at the top level so every connection got REBL if it was Clojure. A fun experiment but not really a common use case. With regards to the fib call: I'm really not sure... maybe lazy sequences aren't rendering correctly? I'll try to have a look soon. This issue will remain open until: * Documentation updated to show a minimal working REBL scenario. * Reader conditionals in hooks investigated. (I think some hooks will work, others won't depending on your current file name ending in .cljc or not.) * Your fib example is working. — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub<#66?email_source=notifications&email_token=ACHXEBSPRZEKTI5L3ZPO3ULQO3G6NA5CNFSM4JA2QYF2YY3PNVWWK3TUL52HS4DFVREXG43VMVBW63LNMVXHJKTDN5WW2ZLOORPWSZGOEBLUPFQ#issuecomment-542590870>, or unsubscribe<https://github.com/notifications/unsubscribe-auth/ACHXEBRQZSNNLEQFWJPEGALQO3G6NANCNFSM4JA2QYFQ>.

[Olical]

Going to close this since the whole concept of hooks has gone in the new update. I'll have to reassess how REBL can be hooked in but I suspect it would just be nREPL middleware which would be so cool. Conjure doesn't even have to know about it!