Namespace not found

[manuel-uberti]

I'm getting Namespace not found. everytime I try to set the namespace on which I am working on. I've tried with different projects, but I'm getting the same error.

Some details about my system, if it could be of any help:

OS: Debian GNU/Linux 8 (jessie)
Kernel: Linux 3.16.0-4-686-pae i686

Emacs version:

GNU Emacs 25.0.50.1 (i686-pc-linux-gnu, X toolkit, Xaw scroll bars)
 of 2015-01-15

CIDER version:

CIDER 0.9.0snapshot (package 20150114.512)

[bbatsov]

Can you provide exact steps to reproduce this problem?

[manuel-uberti]

Sure:

• I open a .clj file inside one project (i.e. core.clj)
• I put the cursor at the end of the line where I specify the namespace (i.e. (ns clojure-brave.core))
• I press C-c C-e

[manuel-uberti]

To expand on this one: I load core.clj with C-c C-l, then try to set the namespace with C-c M-n and it works.

[bbatsov]

I put the cursor at the end of the line where I specify the namespace (i.e. (ns clojure-brave.core))

The evaluate of ns forms in CIDER is a bit special (see this). Maybe this was affected by the recent nREPL changes; I'll have to debug it.

[eigenhombre]

Just updated Cider and am now drastically handicapped by this bug :-(

cider 20150118.2309
emacs 24.4 (9.0)
os-x

[manuel-uberti]

You could use the workaround described here, for now.

[eigenhombre]

Thanks @boccaperta-it -- that helps a lot.

[bbatsov]

I found the problem. cider-interactive-eval no longer uses cider-eval and the ns forms are not evaluated in the user namespace. //cc @vspinu

The problem has existed for a while, but was hidden by the use of load-file for interactive evaluation.

[vspinu]

I found the problem. cider-interactive-eval no longer uses cider-eval and the ns forms are not evaluated in the user namespace. //cc @vspinu

I am pretty sure this was working as expected when cider-interactive-eval was relying on load-file. It's not true anymore since 1dba82f.

[bbatsov]

I am pretty sure this was working as expected when cider-interactive-eval was relying on load-file. It's not true anymore since 1dba82f.

That's what I said as well. :-) On a related note - we should probably remove cider-eval as it was created just to deal with interactive evaluations.

[eigenhombre]

Thanks @bbatsov. I do use cider-eval approximately 500x per day as set up here: https://github.com/eigenhombre/emacs-config/blob/master/org/init.org#inserting-clojure-results-directly-into-source-buffer.

[bbatsov]

I've restored the pre-0.8 behaviour and will work with @vspinu on a more intelligent way handle ns evaluation. See our discussion in #956.