Getting started with Datomic and Clojure in Emacs - clojure

Question

My project.clj file looks like this
(defproject cljs-template "0.1.0-SNAPSHOT"
:description "FIXME: write this!"
:url "http://example.com/FIXME"
:dependencies [[org.clojure/clojure "1.4.0-beta4"]
[noir-cljs "0.3.0"]
[fetch "0.1.0-alpha2"]
[noir "1.3.0-beta2"]
[org.clojure/core.cache "0.5.0"]
[com.datomic/datomic "0.1.3142"
:exclusions [org.slf4j/slf4j-nop org.slf4j/slf4j-log4j12]]
[ch.qos.logback/logback-classic "1.0.1"]]
:plugins [[lein-swank "1.4.3"]]
;:cljsbuild {:builds [{}]}
:main ^{:skip-aot true} cljs-template.server)
and my /src/cljs_template/server.clj begins as the following:
(ns cljs-template.server
(:require [noir.server :as server]
[noir.cljs.core :as cljs]
[cljs-template.tree :as tree])
(:use [datomic.api :only [db q] :as d]))
I then start up swank, run (in-ns 'cljs-template.server) within it, move my cursor to the end of the (ns) function call, and attempt to run the (ns) method using Ctrl-x Ctrl-e. When I do so, I get the following error.
No message.
[Thrown class java.lang.ExceptionInInitializerError]
Restarts:
0: [QUIT] Quit to the SLIME top level
1: [CAUSE1] Invoke debugger on cause org.apache.lucene.index.IndexWriterConfig [Thrown class java.lang.ClassNotFoundException]
Backtrace:
0: (Unknown Source) java.lang.Class.forName0
1: Class.java:247 java.lang.Class.forName
2: RT.java:2030 clojure.lang.RT.loadClassForName
3: RT.java:417 clojure.lang.RT.load
4: RT.java:398 clojure.lang.RT.load
5: core.clj:5386 clojure.core/load[fn]
6: core.clj:5385 clojure.core/load
7: RestFn.java:408 clojure.lang.RestFn.invoke
8: core.clj:5200 clojure.core/load-one
9: core.clj:5237 clojure.core/load-lib
10: RestFn.java:142 clojure.lang.RestFn.applyTo
11: core.clj:602 clojure.core/apply
12: core.clj:5271 clojure.core/load-libs
13: RestFn.java:137 clojure.lang.RestFn.applyTo
14: core.clj:602 clojure.core/apply
15: core.clj:5352 clojure.core/require
16: RestFn.java:436 clojure.lang.RestFn.invoke
17: fulltext_index.clj:4 datomic.fulltext-index/loading
18: (Unknown Source) datomic.fulltext_index__init.load
19: (Unknown Source) datomic.fulltext_index__init.<clinit>
20: (Unknown Source) java.lang.Class.forName0
21: Class.java:247 java.lang.Class.forName
22: RT.java:2030 clojure.lang.RT.loadClassForName
23: RT.java:417 clojure.lang.RT.load
24: RT.java:398 clojure.lang.RT.load
25: core.clj:5386 clojure.core/load[fn]
26: core.clj:5385 clojure.core/load
27: RestFn.java:408 clojure.lang.RestFn.invoke
28: core.clj:5200 clojure.core/load-one
29: core.clj:5237 clojure.core/load-lib
30: RestFn.java:142 clojure.lang.RestFn.applyTo
31: core.clj:602 clojure.core/apply
32: core.clj:5271 clojure.core/load-libs
33: RestFn.java:137 clojure.lang.RestFn.applyTo
34: core.clj:602 clojure.core/apply
35: core.clj:5352 clojure.core/require
36: RestFn.java:703 clojure.lang.RestFn.invoke
37: db.clj:4 datomic.db/loading
38: (Unknown Source) datomic.db__init.load
39: (Unknown Source) datomic.db__init.<clinit>
40: (Unknown Source) java.lang.Class.forName0
41: Class.java:247 java.lang.Class.forName
42: RT.java:2030 clojure.lang.RT.loadClassForName
43: RT.java:417 clojure.lang.RT.load
44: RT.java:398 clojure.lang.RT.load
45: core.clj:5386 clojure.core/load[fn]
46: core.clj:5385 clojure.core/load
47: RestFn.java:408 clojure.lang.RestFn.invoke
48: core.clj:5200 clojure.core/load-one
49: core.clj:5237 clojure.core/load-lib
50: RestFn.java:142 clojure.lang.RestFn.applyTo
51: core.clj:602 clojure.core/apply
52: core.clj:5271 clojure.core/load-libs
53: RestFn.java:137 clojure.lang.RestFn.applyTo
54: core.clj:602 clojure.core/apply
55: core.clj:5352 clojure.core/require
56: RestFn.java:703 clojure.lang.RestFn.invoke
57: query.clj:4 datomic.query/loading
58: (Unknown Source) datomic.query__init.load
59: (Unknown Source) datomic.query__init.<clinit>
60: (Unknown Source) java.lang.Class.forName0
61: Class.java:247 java.lang.Class.forName
62: RT.java:2030 clojure.lang.RT.loadClassForName
63: RT.java:417 clojure.lang.RT.load
64: RT.java:398 clojure.lang.RT.load
65: core.clj:5386 clojure.core/load[fn]
66: core.clj:5385 clojure.core/load
67: RestFn.java:408 clojure.lang.RestFn.invoke
68: core.clj:5200 clojure.core/load-one
69: core.clj:5237 clojure.core/load-lib
70: RestFn.java:142 clojure.lang.RestFn.applyTo
71: core.clj:602 clojure.core/apply
72: core.clj:5271 clojure.core/load-libs
73: RestFn.java:137 clojure.lang.RestFn.applyTo
74: core.clj:602 clojure.core/apply
75: core.clj:5352 clojure.core/require
76: RestFn.java:421 clojure.lang.RestFn.invoke
77: api.clj:6 datomic.api/loading
78: (Unknown Source) datomic.api__init.load
79: (Unknown Source) datomic.api__init.<clinit>
80: (Unknown Source) java.lang.Class.forName0
81: Class.java:247 java.lang.Class.forName
82: RT.java:2030 clojure.lang.RT.loadClassForName
83: RT.java:417 clojure.lang.RT.load
84: RT.java:398 clojure.lang.RT.load
85: core.clj:5386 clojure.core/load[fn]
86: core.clj:5385 clojure.core/load
87: RestFn.java:408 clojure.lang.RestFn.invoke
88: core.clj:5200 clojure.core/load-one
89: core.clj:5237 clojure.core/load-lib
90: RestFn.java:142 clojure.lang.RestFn.applyTo
91: core.clj:602 clojure.core/apply
92: core.clj:5271 clojure.core/load-libs
93: RestFn.java:137 clojure.lang.RestFn.applyTo
94: core.clj:604 clojure.core/apply
95: core.clj:5363 clojure.core/use
96: RestFn.java:408 clojure.lang.RestFn.invoke
97: NO_SOURCE_FILE:1 cljs-template.server/eval1941[fn]
98: NO_SOURCE_FILE:1 cljs-template.server/eval1941
99: Compiler.java:6465 clojure.lang.Compiler.eval
100: Compiler.java:6455 clojure.lang.Compiler.eval
101: Compiler.java:6431 clojure.lang.Compiler.eval
102: core.clj:2795 clojure.core/eval
103: core.clj:532 swank.core/eval782[fn]
104: MultiFn.java:163 clojure.lang.MultiFn.invoke
105: basic.clj:54 swank.commands.basic/eval-region
106: basic.clj:44 swank.commands.basic/eval-region
107: basic.clj:73 swank.commands.basic/eval968[fn]
108: Var.java:401 clojure.lang.Var.invoke
109: (Unknown Source) user/eval1937
110: Compiler.java:6465 clojure.lang.Compiler.eval
111: Compiler.java:6431 clojure.lang.Compiler.eval
112: core.clj:2795 clojure.core/eval
113: core.clj:100 swank.core/eval-in-emacs-package
114: core.clj:256 swank.core/eval-for-emacs
115: Var.java:409 clojure.lang.Var.invoke
116: AFn.java:167 clojure.lang.AFn.applyToHelper
117: Var.java:518 clojure.lang.Var.applyTo
118: core.clj:600 clojure.core/apply
119: core.clj:107 swank.core/eval-from-control
120: core.clj:330 swank.core/spawn-worker-thread[fn]
121: AFn.java:159 clojure.lang.AFn.applyToHelper
122: AFn.java:151 clojure.lang.AFn.applyTo
123: core.clj:600 clojure.core/apply
124: core.clj:326 swank.core/spawn-worker-thread[fn]
125: RestFn.java:397 clojure.lang.RestFn.invoke
126: AFn.java:24 clojure.lang.AFn.run
127: Thread.java:662 java.lang.Thread.run
I then press 0 to close the stacktrace, and press Ctrl-x Ctrl-e on the (ns) call again, now my error is:
Could not initialize class datomic.api__init
[Thrown class java.lang.NoClassDefFoundError]
Restarts:
0: [QUIT] Quit to the SLIME top level
Backtrace:
0: (Unknown Source) java.lang.Class.forName0
1: Class.java:247 java.lang.Class.forName
2: RT.java:2030 clojure.lang.RT.loadClassForName
3: RT.java:417 clojure.lang.RT.load
4: RT.java:398 clojure.lang.RT.load
5: core.clj:5386 clojure.core/load[fn]
6: core.clj:5385 clojure.core/load
7: RestFn.java:408 clojure.lang.RestFn.invoke
8: core.clj:5200 clojure.core/load-one
9: core.clj:5237 clojure.core/load-lib
10: RestFn.java:142 clojure.lang.RestFn.applyTo
11: core.clj:602 clojure.core/apply
12: core.clj:5271 clojure.core/load-libs
13: RestFn.java:137 clojure.lang.RestFn.applyTo
14: core.clj:604 clojure.core/apply
15: core.clj:5363 clojure.core/use
16: RestFn.java:408 clojure.lang.RestFn.invoke
17: NO_SOURCE_FILE:1 cljs-template.server/eval6292[fn]
18: NO_SOURCE_FILE:1 cljs-template.server/eval6292
19: Compiler.java:6465 clojure.lang.Compiler.eval
20: Compiler.java:6455 clojure.lang.Compiler.eval
21: Compiler.java:6431 clojure.lang.Compiler.eval
22: core.clj:2795 clojure.core/eval
23: core.clj:532 swank.core/eval782[fn]
24: MultiFn.java:163 clojure.lang.MultiFn.invoke
25: basic.clj:54 swank.commands.basic/eval-region
26: basic.clj:44 swank.commands.basic/eval-region
27: basic.clj:73 swank.commands.basic/eval968[fn]
28: Var.java:401 clojure.lang.Var.invoke
29: (Unknown Source) cljs-template.server/eval6288
30: Compiler.java:6465 clojure.lang.Compiler.eval
31: Compiler.java:6431 clojure.lang.Compiler.eval
32: core.clj:2795 clojure.core/eval
33: core.clj:100 swank.core/eval-in-emacs-package
34: core.clj:256 swank.core/eval-for-emacs
35: Var.java:409 clojure.lang.Var.invoke
36: AFn.java:167 clojure.lang.AFn.applyToHelper
37: Var.java:518 clojure.lang.Var.applyTo
38: core.clj:600 clojure.core/apply
39: core.clj:107 swank.core/eval-from-control
40: core.clj:330 swank.core/spawn-worker-thread[fn]
41: AFn.java:159 clojure.lang.AFn.applyToHelper
42: AFn.java:151 clojure.lang.AFn.applyTo
43: core.clj:600 clojure.core/apply
44: core.clj:326 swank.core/spawn-worker-thread[fn]
45: RestFn.java:397 clojure.lang.RestFn.invoke
46: AFn.java:24 clojure.lang.AFn.run
47: Thread.java:662 java.lang.Thread.run
What am I doing wrong? How do I get datomic working in my emacs using swank/slime.

Answer 1

Turns out I was executing the wrong command.
I was running lein deps and getting the following error.
...
Try downloading the file manually from the project website.
Then, install it using the command:
mvn install:install-file -DgroupId=com.datomic -DartifactId=datomic -Dversion=0.1.3157 -Dpackaging=jar -Dfile=/path/to/file
Alternatively, if you host your own repository you can deploy the file there:
mvn deploy:deploy-file -DgroupId=com.datomic -DartifactId=datomic -Dversion=0.1.3157 -Dpackaging=jar -Dfile=/path/to/file -Durl=[url] -DrepositoryId=[id]
Path to dependency:
1) org.apache.maven:super-pom:pom:2.0
2) com.datomic:datomic:jar:0.1.3157
I saw that the README file in the downloaded datomic code also contained mention of adding datomic to my mvn. Naturally (here comes the stupid part) I assumed that they sort of said the same thing.
lein will tell you that you should execute
mvn install:install-file -DgroupId=com.datomic -DartifactId=datomic -Dversion=0.1.3157 -Dpackaging=jar -Dfile=/path/to/file
the README says you should execute
mvn install:install-file -DgroupId=com.datomic -DartifactId=datomic -Dfile=datomic-${DATOMIC-VERSION}.jar -DpomFile=pom.xml
Did you notice that the README instructions also includes a pom.xml file? Neither did I! Yeah, that is important.
Anyway, be sure to also include the pom.xml file. If you were trying to add datomic 0.1.3157 to your mvn repository, you would execute the following in the datomic directory you downloaded.
mvn install:install-file -DgroupId=com.datomic -DartifactId=datomic -Dfile=datomic-0.1.3157.jar -DpomFile=pom.xml

Answer 2

I posted a working project here
my usual suspect in debugging swank problems are:
is leiningen up to date
the version of lein-swank
version of emacs (Emacs 24, I have found to be much more reliable)
leftover old dependencies in the lib dir
EDIT: the correct way to get the datomic jar is as Stephen Cagle says, copied from his comment below:
mvn install:install-file -DgroupId=com.datomic -DartifactId=datomic -Dfile=datomic-${DATOMIC-VERSION}.jar