confusing error messages.

[winks]

$ lein trampoline repl :headless 
nREPL server started on port 38457 on host 127.0.0.1
$ lein version
Leiningen 2.3.0 on Java 1.7.0_25 OpenJDK 64-Bit Server VM

so far so good

$ ~/bin/grench-0.2.0-debian-7 eval '(println "hi")' 
Couldn't read port from .nrepl-port or $GRENCH_PORT.
$ GRENCH_PORT=38457 ~/bin/grench-0.2.0-debian-7 eval '(println "hi")'
hi

ok

$ ~/bin/grench-0.2.0-debian-7 lein version 
Couldn't read port from ~/.lein/repl-port or $LEIN_REPL_PORT.

If Leiningen is not running, launch `lein repl :headless' from outside a
project directory and try again.
$ LEIN_REPL_PORT=38457 ~/bin/grench-0.2.0-debian-7 lein version
  Unknown status: 19:namespace-not-found
  Unknown status: 5:error

o_O

So, to sum it up

• Why wouldn't ~/.lein/repl-port be created automatically? Can I just do that? Why no hint which format?
• Why is .nrepl-port not there? And why is that in the current dir? Same questions as above as well
• If I set LEIN_REPL_PORT, why does that not work?

Upgrading to leiningen 2.3.3 did not help, btw.

[technomancy]

OK, so the main issue here is that you need two separate servers; one for project code and one for lein tasks. What you're doing is trying to re-use the project server as a Leiningen server, which doesn't work because your project doesn't know about Leiningen's namespaces.

The second example should work without setting GRENCH_PORT if you run grench from within the project dir.

But yeah, the error messages could probably be clearer here. Open to suggestions as to wording.

[winks]

Ok, thanks - that clears it up somewhat. But the headless repl I started was inside a project dir - so what you explained sounded exactly the other way round.

When I run

lein repl :headless

and in the same dir

~/bin/grench-0.2.0-debian-7 eval '(println 23)'

then I still need GRENCH_PORT=1234

So basically running clojure code is fine, but I can't get lein to work over grench - at all, with any task

[technomancy]

Ok, I see that you're running Leiningen 2.3.0. You need 2.3.3 for Grenchman.

[winks]

OK, so I changed nothing and I got it to work somehow.

• Leiningen 2.3.3 was already used, see above, I tried 2.3.0 and 2.3.3
• ~ $ lein repl :headless outside a project dir and I can use grench eval and grench lein anywhere, outside and inside a project dir
  • ~/project/ $ lein trampoline repl :headless inside a project dir, nothing works, not even ~/project/ $ grench lein version

[technomancy]

Right; launching a repl inside your project should not allow grench lein to work, because how would your project know what to do with Leiningen tasks?

[winks]

Yeah, now I got it. I have no clue how, but I totally misunderstood http://leiningen.org/grench.html versus what I had learnt from IRC earlier - maybe my expectations were completely off.

So maybe the only thing is missing is a "why should I use it" paragraph on that page. Basically like the repo README.

Case closed, all is fine.

Thanks for your patience :)

(But it really did misbehave at the start, still confused a little)