REPL instructions

[agzam]

@Grazfather @eccentric-j Could please describe how to get it running? It's been quite a while since I touched any Lua related stuff. I naively thought that doing luarock install jeejah would magically work, but then I remembered how Jay has mentioned - currently, you have to manually edit the rockspec. Can you list the steps required, prior to:

;; - To your ~/.spacehammer/config.fnl add:
;;   (local repl (require :repl))
;;   (repl.run (repl.start))

[Grazfather]

You shouldn't need to do that anymore. Just luarocks install jeejah. After that you have to start the server and connect to it. I usually use shevek.

I have the functionality bound as so:

(local repl-keys
       [{:mods [:alt :cmd]
         :key :r
         :action (fn []
                   (alert "creating repl server")
                   (global repl-server (repl.start {:host "127.0.0.1"})))}
        {:mods [:alt :cmd]
         :key :s
         :action (fn []
                   (alert "running repl server")
                   (repl.run repl-server))}
        {:mods [:alt :cmd]
         :key :t
         :action (fn []
                   (alert "stopping repl server")
                   (repl.stop repl-server))}])

then

❯ fennel shevek.fnl localhost:7888
Connected.
>=> (+ 1 2)
3

[agzam]

Oh cool. At first I was seeing some errors in the log, so I assumed it didn't work. Then I was able to connect to it using Monroe. It starts the REPL and I even tried typing (alert "I'm not a cow, I'm a pickle") and it worked.
Now I need to figure out how to connect to it from any Fennel file, so I can eval stuff in an Emacs buffer (not the Monroe REPL buffer).
But this is so cool. I love this!

[jaidetree]

@agzam Nice!

To do that open any fennel file and use M-x monroe-interaction-mode and M-x monroe, connect to the REPL server and you should be good to eval with C-c C-c. Just be mindful if you save a file and spacehammer restarts it will lose connection.

@Grazfather Thinking about that connection issue. The auto-reloading was likely a stop-gap due to not having a REPL. Thinking of wrapping that feature in a state machine then maybe whenever a client connects to the REPL server it will disable auto-reloading until a disconnect or manual restart.

[agzam]

To do that open any fennel file and use M-x monroe-interaction-mode and M-x monroe, connect to the REPL server

That's what I tried. But I can't seem to find a way to connect to the instance. M-x monroe does open the REPL session. But monroe-interaction-mode doesn't do anything, except making some keys available

Here's what I did:

• in .spacehammer/config.fnl, I added these:

  (local repl (require :repl))
  (repl.run (repl.start {:port "9898"}))

• Then M-x monroe, it starts the REPL

• Attempting to connect to the REPL session from config.fnl, using (monroe-connect "localhost:9898")

  (error "Buffer config.fnl has no process")

• Attemping to enable monroe-interaction-mode and calling eval commands:

  (wrong-type-argument processp nil)

• Trying to check what the current session is (monroe-current-session):

  (wrong-type-argument processp nil)

[xiaobing-huang]

@agzam I also encountered the same problem, but now I managed to make it work.
check your .nrepl-port file, and see whether it is 9898, also there is an invisible character (carriage return) after 9898.
you need remove that also. I am use echo -n "9898" > ~/Downloads/.nrepl-port to remove the invisible character.

[agzam]

@xiaobing-huang Sorry for the long delay. Can you please elaborate how do you exactly connect to the REPL?
I am still having problems with associating any given .fnl file with REPL session. I can create a REPL session using monroe command. That allows me to type directly into the REPL, but I'd like to find a way of evaling things without having to type them in a REPL, but directly from .fnl files.