Namespace not found error in cider 0.9.0

[ogis-hashi]

I am facing a "Namespace not found" error when I evaluate (ns namespace)
after updating cider 0.9.0 from 0.9.0-SNAPSHOT this morning.

It occurred even if in a new project by 'lein new dummy'.

$ tree .
├── LICENSE
├── README.md
├── doc
│   └── intro.md
├── project.clj
├── resources
├── src
│   └── dummy
│       ├── #core.clj#
│       └── core.clj
├── target
│   ├── classes
│   │   └── META-INF
│   │       └── maven
│   │           └── dummy
│   │               └── dummy
│   │                   └── pom.properties
│   ├── repl-port
│   └── stale
│       └── extract-native.dependencies
└── test
    └── dummy
        └── core_test.clj

13 directories, 10 files
$ 

; CIDER 0.9.0 (package: 20150616.1226) (Java 1.8.0_40, Clojure 1.6.0, nREPL 0.2.10)
user> 

project.clj is very simple like this:

(defproject dummy "0.1.0-SNAPSHOT"
  :description "FIXME: write description"
  :url "http://example.com/FIXME"
  :license {:name "Eclipse Public License"
            :url "http://www.eclipse.org/legal/epl-v10.html"}
  :dependencies [[org.clojure/clojure "1.6.0"]])

my ~/.lein/projects.cls as follows:

{:user {:plugins [
                  [lein-try "0.4.3"]
                  [lein-ancient "0.6.4" :exclusions [org.clojure/core.cache]]
                  [lein-bikeshed "0.2.0"]
                  [lein-ritz "0.7.0"]
                  [lein-marginalia "0.8.0"]
                  [http-kit/lein-template "1.0.0-SNAPSHOT"]
                  [cider/cider-nrepl "0.9.0"]
                  [cljs-complete "0.1.1"]
                  [lein-immutant "2.0.0"]
                  [lein-droid "0.3.0-beta4"]
                  [lein-hadoop-cluster "0.1.2"]
                  [jonase/eastwood "0.2.1"]
                  [lein-midje "3.1.3"]
                  ]
        :dependencies [
                       [nrepl-inspect "0.4.1"]
                       [compliment "0.2.0"]
                       [ritz/ritz-nrepl-middleware "0.7.0"]
                       [cider/cider-nrepl "0.9.0"]
                       [alembic "0.2.1"]
                       [org.clojure/tools.nrepl "0.2.10"]
                       ]
        :repl-options {:nrepl-middleware
                       [
                        cider.nrepl.middleware.classpath/wrap-classpath
                        cider.nrepl.middleware.complete/wrap-complete
                        cider.nrepl.middleware.info/wrap-info
                        cider.nrepl.middleware.inspect/wrap-inspect
                        cider.nrepl.middleware.stacktrace/wrap-stacktrace
                        cider.nrepl.middleware.trace/wrap-trace
                        ]}
        }}

I have eliminated :repl-options from it, the result was the same.

{:user {:plugins [
                  [lein-try "0.4.3"]                  
                  [lein-ancient "0.6.4" :exclusions [org.clojure/core.cache]]
                  [lein-bikeshed "0.2.0"]
                  [lein-ritz "0.7.0"]
                  [lein-marginalia "0.8.0"]
                  [http-kit/lein-template "1.0.0-SNAPSHOT"]
                  [cider/cider-nrepl "0.9.0"]
                  [cljs-complete "0.1.1"]                  
                  [lein-immutant "2.0.0"]
                  [lein-droid "0.3.0-beta4"] 
                  [lein-hadoop-cluster "0.1.2"]
                  [jonase/eastwood "0.2.1"]
                  [lein-midje "3.1.3"]
                  ]
        :dependencies [
                       [nrepl-inspect "0.4.1"]
                       [compliment "0.2.0"]
                       [ritz/ritz-nrepl-middleware "0.7.0"]
                       [cider/cider-nrepl "0.9.0"]
                       [alembic "0.2.1"]
                       ;;[org.clojure/tools.nrepl "0.2.7"]
                       [org.clojure/tools.nrepl "0.2.10"]
                       ]
        }}

It seems everything is ok except (ns ...) expression and I can continue to use cider by copying and
pasting (ns ...) expression into cider-repl window.

I have tested with cider-20150617.753.

[expez]

Did you call cider-jack-in on this project, or were you connected to a repl started in another project?

[bbatsov]

Btw, you should also remove nrepl-inspect, compliment and ritz from your deps. I'm not sure why you've added alembic, but you can probably remove it as well.

[ogis-hashi]

I called cider-jack-in on this 'dummy' project.
I tested with the following ~/.lein/projects.clj, but the result was the same.

{:user {:plugins [
                  [lein-try "0.4.3"]
                  ;[lein-ancient "0.6.4" :exclusions [org.clojure/core.cache]]
                  ;[lein-bikeshed "0.2.0"]
                  ;[lein-marginalia "0.8.0"]
                  ;[http-kit/lein-template "1.0.0-SNAPSHOT"]
                  [cider/cider-nrepl "0.9.0"]
                  ;[cljs-complete "0.1.1"]
                  ;[lein-immutant "2.0.0"]
                  ;[jonase/eastwood "0.2.1"]
                  ;[lein-midje "3.1.3"]
                  ]
        :dependencies [
                       ;;[nrepl-inspect "0.4.1"]
                       [cider/cider-nrepl "0.9.0"]
                       ;;[alembic "0.2.1"]
                       [org.clojure/tools.nrepl "0.2.10"]
                       ]
        }}

[bbatsov]

@tokomakoma123 Have a look at the troubleshooting section of the readme. The *nrepl-messages* contents might help us make some progress here.

[ogis-hashi]

I've set (setq nrepl-log-messages t) in my init.el and obtained info here.
Is this helpful ?

(--->
  op  "clone"
  id  "1"
)
(<-
  id  "1"
  new-session  "cf24d741-342f-44fc-a1eb-c7ae8ad820fa"
  session  "a77ef47f-1586-4fad-a4cf-c052465eaa9d"
  status  ("done")
)
(--->
  op  "clone"
  id  "2"
)
(<-
  id  "2"
  new-session  "c9a12c57-3e77-401d-afb4-316d0a291e71"
  session  "f76bf398-014f-4115-8b76-aec8b9fb1536"
  status  ("done")
)
(--->
  op  "describe"
  id  "3"
)
(<-
  aux  (dict
         current-ns  "user"
       )
  id  "3"
  ops  (dict
         apropos  (dict)
         classpath  (dict)
         clone  (dict)
         close  (dict)
         complete  (dict)
         complete-doc  (dict)
         debug-input  (dict)
         describe  (dict)
         eldoc  (dict)
         eval  (dict)
         format-code  (dict)
         format-edn  (dict)
         info  (dict)
         init-debugger  (dict)
         inspect-pop  (dict)
         inspect-push  (dict)
         inspect-refresh  (dict)
         interrupt  (dict)
         load-file  (dict)
         ls-sessions  (dict)
         macroexpand  (dict)
         ns-list  (dict)
         ns-path  (dict)
         ns-vars  (dict)
         pprint-middleware  (dict)
         refresh  (dict)
         refresh-all  (dict)
         resource  (dict)
         resources-list  (dict)
         retest  (dict)
         stacktrace  (dict)
         stdin  (dict)
         test  (dict)
         test-stacktrace  (dict)
         toggle-trace-ns  (dict)
         toggle-trace-var  (dict)
         undef  (dict)
       )
  session  "ed2886ca-0215-4fcd-9fc3-3c4ecf2afe76"
  status  ("done")
  versions  (dict
              clojure  (dict
                         incremental  0
                         major  1
                         minor  6
                         version-string  "1.6.0"
                       )
              java  (dict
                      incremental  "0"
                      major  "1"
                      minor  "8"
                      update  "40"
                      version-string  "1.8.0_40"
                    )
              nrepl  (dict
                       incremental  "10"
                       major  "0"
                       minor  "2"
                       qualifier  ""
                       version-string  "0.2.10"
                     )
            )
)
(--->
  op  "eval"
  session  "cf24d741-342f-44fc-a1eb-c7ae8ad820fa"
  code  "(str *ns*)"
  id  "4"
)
(<-
  id  "4"
  ns  "user"
  session  "cf24d741-342f-44fc-a1eb-c7ae8ad820fa"
  value  "\"user\""
)
(<-
  id  "4"
  session  "cf24d741-342f-44fc-a1eb-c7ae8ad820fa"
  status  ("done")
)
(--->
  op  "eval"
  session  "cf24d741-342f-44fc-a1eb-c7ae8ad820fa"
  code  "(when (clojure.core/resolve 'clojure.main/repl-requires)\n      (clojure.core/map clojure.core/require clojure.main/repl-requires))"
  id  "5"
)
(--->
  op  "eval"
  session  "cf24d741-342f-44fc-a1eb-c7ae8ad820fa"
  code  "(try\n      (require 'cider.nrepl.version)\n      (:version-string @(resolve 'cider.nrepl.version/version))\n    (catch Throwable _ \"not installed\"))"
  id  "6"
)
(<-
  id  "5"
  ns  "user"
  session  "cf24d741-342f-44fc-a1eb-c7ae8ad820fa"
  value  "(nil nil nil)"
)
(<-
  id  "5"
  session  "cf24d741-342f-44fc-a1eb-c7ae8ad820fa"
  status  ("done")
)
(<-
  id  "6"
  ns  "user"
  session  "cf24d741-342f-44fc-a1eb-c7ae8ad820fa"
  value  "\"0.9.0\""
)
(<-
  id  "6"
  session  "cf24d741-342f-44fc-a1eb-c7ae8ad820fa"
  status  ("done")
)
(--->
  ns  "dummy.core"
  op  "eval"
  session  "cf24d741-342f-44fc-a1eb-c7ae8ad820fa"
  code  "(ns dummy.core)"
  id  "7"
)
(<-
  id  "7"
  session  "cf24d741-342f-44fc-a1eb-c7ae8ad820fa"
  status  ("namespace-not-found" "done" "error")
)
(<-
  id  "7"
  session  "cf24d741-342f-44fc-a1eb-c7ae8ad820fa"
  status  ("done")
)

[bbatsov]

I see the problem. It's trying to evaluate the ns in the ns of the current file instead of user. You can sidestep this by using C-c C-k and we should check what goes wrong.

This is accounted for here https://github.com/clojure-emacs/cider/blob/master/cider-interaction.el#L1588

What command are you using to eval the ns? (my guess is that we're not invoking prep-eval for some interactive evaluation command)

[ogis-hashi]

The cider-eval-buffer(C-c C-k) works fine.
The cider-eval-ns-form(C-c C-n) and cider-eval-last-sexp(C-c C-e) don't
work.

2015-06-18 17:03 GMT+09:00 Bozhidar Batsov notifications@github.com:

I see the problem. It's trying to evaluate the ns in the ns of the current
file instead of user. You can sidestep this by using C-c C-k and we
should check what goes wrong.

This is accounted for here
https://github.com/clojure-emacs/cider/blob/master/cider-interaction.el#L1588

What command are you using to eval the ns?

—
Reply to this email directly or view it on GitHub
#1139 (comment)
.

[bbatsov]

OK, got it. I see the problem and I'll fix it soon. It's here https://github.com/clojure-emacs/cider/blob/master/cider-interaction.el#L1592

Basically, the order of those checks kind of sucks. The ns-form check should be higher up.

[bbatsov]

Actually, the problem is different - when the prep eval was introduced the special logic to eval ns forms always in the user namespace got lost somewhere. //cc @cichli

[bbatsov]

Btw, this is also @Malabarba's problem - he said a few times he gets "Namespace not found error" in cases when the ns should have been automatically evaluated. That's a pretty serious oversight on our part. I cannot believe more people haven't noticed it. Guess most users just start by doing C-c C-k which masks the problem.

[ogis-hashi]

Great ! It worked.
Thanks,
Makoto