I'm trying to use sbt to generate an ensime configuration file as described in this tutorial:
http://jawher.net/2011/01/17/scala-development-environment-emacs-sbt-ensime/
The issue I'm having is that I cannot get sbt to generate a configuration file as the 'ensime generate' command does not appear to be part of the sbt command set.
[output]
[info] Building project ScalaTest 1.0 against Scala 2.9.2
[info] using sbt.DefaultProject with sbt 0.7.7 and Scala 2.7.7
[error] No method named 'ensime' exists.
[info] Execute 'help' for a list of commands or 'actions' for a list of available project actions and methods.
[info]
[info] Total time: 0 s, completed 26-Jan-2013 12:53:48
[info]
[info] Total session time: 0 s, completed 26-Jan-2013 12:53:48
[error] Error during build.
[Steps followed]
cd <project directory> (sbt project root)
sbt 'ensime generate'
[Version info]
sbt 0.7.7
ensime 2.9.2-0.9.8.1
scala 2.9.2
[emacs configuration]
(add-to-list 'load-path "~/.emacs.d/scala-emacs")
(require 'scala-mode-auto)
(add-hook 'scala-mode-hook
'(lambda ()
(scala-mode-feature-electric-mode)
))
(require 'scala-mode)
(add-to-list 'auto-mode-alist '("\\.scala$" . scala-mode))
(add-to-list 'load-path "~/.emacs.d/ensime/elisp/")
(require 'ensime)
(add-hook 'scala-mode-hook 'ensime-scala-mode-hook)
(push "/media/xxx/Development/Runtimes/scala-2.9.2/bin/" exec-path)
(push "/media/xxx/Development/Tools/sbt/" exec-path)
Any help appreciated (I've checked all the paths so please no comments regarding this)
Cheers,
JLove
Have you added the ensime-sbt-cmd plugin to your sbt build? http://aemoncannon.github.com/ensime/index.html#tth_sEc3.1
it seems you need to quote the command on the shell i.e.:
$ sbt "ensime generate"
HTH
I had the same problem. After trying what you did, I solved it with these extra steps:
Install the latest version (as of writing, got 0.12.3 from http://www.scala-sbt.org/release/docs/Getting-Started/Setup.html)
Edit the file project\build.properties and change the sbt.version accordingly (in my case, sbt.version=0.12.3)
Run sbt from the project root.
Since you already modified the plugins file, this should install the ensime command. If you want to run it from the command line, remember to quote the command (sbt "ensime generate").
Related
I currently have a problem with recompile on code change with sbt.
I was following the sbt reference 'sbt by example'
I installed sbt 1.2.8 and followed the instructions:
Create a minimum sbt build
$ mkdir foo-build
$ cd foo-build
$ touch build.sbt
Start sbt shell
$ sbt
[info] Loading global plugins from C:\Users\hce\.sbt\1.0\plugins
[info] Loading project definition from E:\learn\Scala\demo\foo-build\project
[info] Loading settings for project foo-build from build.sbt ...
[info] Set current project to foo-build (in build file:/E:/learn/Scala/demo/foo-build/)
[info] sbt server started at local:sbt-server-57c501e502d72a00d890
Recompile on code change (Note the ~ prefix before the compile command)
sbt:foo-build> ~compile
[success] Total time: 0 s, completed Jul 6, 2019 12:01:24 PM
1. Waiting for source changes in project foo-build... (press enter to interrupt)
Create a source file
Leave the previous command running. From a different shell or in your file manager create in the project directory the following nested directories: src/main/scala/example. Then, create Hello.scala in the example directory using your favorite editor as follows:
package example
object Hello extends App {
println("Hello")
}
This new file should be picked up by the running command. But it is not working on my system.
Expected Behaviour:
[info] Compiling 1 Scala source to /tmp/foo-build/target/scala-2.12/classes ...
[info] Done compiling.
[success] Total time: 2 s, completed May 6, 2018 3:53:42 PM
2. Waiting for source changes... (press enter to interrupt)
Here are some Information about my environment
$ java -version
java version "1.8.0_211"
Java(TM) SE Runtime Environment (build 1.8.0_211-b12)
Java HotSpot(TM) 64-Bit Server VM (build 25.211-b12, mixed mode)
$ sbt sbtVersion
[info] Loading global plugins from C:\Users\hce\.sbt\1.0\plugins
[info] Loading project definition from E:\learn\Scala\demo\foo-build\project
[info] Loading settings for project foo-build from build.sbt ...
[info] Set current project to foo-build (in build file:/E:/learn/Scala/demo/foo-build/)
[info] 1.2.8
$ systeminfo.exe | grep '^OS'
OS Name: Microsoft Windows 10 Enterprise LTSC
OS Version: 10.0.17763 N/A Build 17763
OS Manufacturer: Microsoft Corporation
OS Configuration: Standalone Workstation
OS Build Type: Multiprocessor Free
What I already tried:
reinstall sbt
try it with windows commad line
try it mingw64 bash
What am I missing to run the sbt ~compile command correctly?
I found the answer.
The instruction contains an error.
We are supposed to put the src/main/scala/example directory in the project directory.
From a different shell or in your file manager create in the project directory the following nested directories: src/main/scala/example.
But this leads to the problem described. foo-build/project/ is for build definition code.
If I put the src/main/scala/example directory in the foo-build directory it is working.
I should have executed the run command beforehand, which gives the 'No main class detected' error. Which in turn helped to discover, that the directory structure was incorrect by reading the following stackoverflow question: how to set main class in sbt project .
My mistake. Sorry for bothering you.
Following the "https://www.coursera.org/learn/scala-spark-big-data/supplement/R7FJ9/eclipse-tutorial" course, I'm trying to create a eclipse project from sbt, by adding sbteclipse plugin.
sbt new scala/hello-world.g8
cd hello-world
echo 'addSbtPlugin("com.typesafe.sbteclipse" % "sbteclipse-plugin" % "5.1.0")' > project/plugins.sbt
sbt> eclipse
It should last a minute and return several successful, but instead it stay still, it gets stuck. The message I've received is
Java HotSpot(TM) 64-Bit Server VM warning: ignoring option MaxPermSize=256m; support was removed in 8.0
I've installed sbt 1.0.2, it fails, then I'd install sbt 0.13.16 and still fails. Checking the sbt version it says it's 1.0.2 (although I'd uninstalled sbt 1.0.2 to install the older version).
checking https://github.com/typesafehub/sbteclipse/issues/346 it seen like this is a brand new issue, it's supose the gets fix by typing sbt.version=0.13.16 in project/build.properties, but even after that the problem persist. I don't know if problem persist because is a fix for Mac and I'm working on windows 10, or if the solution saids is for sbt.version=0.13.15 and I'm using sbt.version=0.13.16.
Checking the \scala hello world\hello-world\eclipse file it says:
[error] [C:\Users\israel.rodriguez\Documents\eclipse\scala hello world\hello-world\project\plugins.sbt]:1: unclosed character literal
Project loading failed: (r)etry, (q)uit, (l)ast, or (i)gnore?
Terminate batch job (Y/N)?
checking the \scala hello world\hello-world\project\plugins.sbt I found :
'addSbtPlugin("com.typesafe.sbteclipse" % "sbteclipse-plugin" % "5.1.0")'
when removing the ' ' at the beginning and the end. the \scala hello world\hello-world\eclipse file saids :
[info] Loading project definition from
C:\Users\israel.rodriguez\Documents\eclipse\scala hello
world\hello-world\project
[info] Set current project to hello-world (in build file:/C:/Users/israel.rodriguez/Documents/eclipse/scala%20hello%20world/hello-world/)
and it remain there for eternity. with the same message on windows shell :
Java HotSpot(TM) 64-Bit Server VM warning: ignoring option
MaxPermSize=256m; support was removed in 8.0
My question is, what's wrong over here? ,and how can I solve or work around this. Sorry for the rookie question, is my firt time with sbt, scala or spark.
I was in exact same scenario with the same problem as mentioned above. Here is how I overcame it.
Firstly there is no problem in steps that you follow everything is correct except:
addSbtPlugin("com.typesafe.sbteclipse" % "sbteclipse-plugin" % "5.1.0")
Use latest version for the sbt plugin form, which is:
addSbtPlugin("com.typesafe.sbteclipse" % "sbteclipse-plugin" % "5.2.4")
The latest version handles the hanging console problem as described here, also there is no need to use '' at the beginning and the end.
Step: 1. Download and install sbt from here (windows sbt-1.0.4.msi)
Step 2. Go to cmd prompt and type sbt about, it will display something like this
C:\Users\rajnish.kumar>sbt about
"C:\Users\rajnish.kumar\.sbt\preloaded\org.scala-sbt\sbt\"1.0.4"\jars\sbt.jar"
Java HotSpot(TM) 64-Bit Server VM warning: ignoring option MaxPermSize=256m; support was removed in 8.0
[warn] Executing in batch mode.
[warn] For better performance, hit [ENTER] to switch to interactive mode, or
[warn] consider launching sbt without any commands, or explicitly passing 'shell'
[info] Loading project definition from C:\Users\rajnish.kumar\project
[info] Set current project to rajnish-kumar (in build file:/C:/Users/rajnish.kumar/)
[info] This is sbt 0.13.15
[info] The current project is {file:/C:/Users/rajnish.kumar/}rajnish-kumar 0.1-SNAPSHOT
[info] The current project is built against Scala 2.10.6
[info] Available Plugins: sbt.plugins.IvyPlugin, sbt.plugins.JvmPlugin, sbt.plugins.CorePlugin, sbt.plugins.JUnitXmlReportPlugin, sbt.plugins.Giter8TemplatePlugin
[info] sbt, sbt plugins, and build definitions are using Scala 2.10.6
I'm not sure why it says "This is sbt 0.13.15"; if anybody knows please answer it here.
Step 3. Go to your workspace form cmd prompt and type and hit sbt new sbt/scala-seed.g8, type project name as (e.g. hello) when asked.
Step 4. Now move to your project directory i.e cd hello
Step 5. Now type echo addSbtPlugin("com.typesafe.sbteclipse" % "sbteclipse-plugin" % "5.2.4") > project/plugins.sbt
Step 6. Make sure you are inside the hello project and then instead of calling sbt > eclipse (if you will do like this way then it will get stuck in the same infinite loop as you're getting) only call sbt and it will start the server on default port.
Step 7. Now type eclipse, now it will start downloading all dependency, eventually it will show Successfully created Eclipse project files for project(s):
Step 8. Import project (hello) to Eclipse as normal and it will work. Please not do not call sbt > eclipse in single go call them one by one first call sbt and when server is started then only call Eclipse.
I had the same issue when I start reading about scala.
Concerning the problem of [\plugins.sbt]:1: unclosed character literal] use :
echo addSbtPlugin("com.typesafe.sbteclipse" % "sbteclipse-plugin" % "5.1.0") > project/plugins.sbt
Remove the simple quote from the begining and the end of the echo first parameter
I had the very same issue as you describe. I use Windows 10 and wonder if it just occurs on that system.
It works if I use sbteclipse 5.2.4 and some other small modifications:
cd hello-world
echo 'addSbtPlugin("com.typesafe.sbteclipse" % "sbteclipse-plugin" % "5.2.4")' > project/plugins.sbt
Next, I need to go to project/plugins.sbt and remove the ' at the beginning and end of the line.
Now, do NOT enter sbt > eclipse! This will just pipe the sbt console into a the newly created file and you won't execute eclipse. Instead, typ the following into the command line:
sbt eclipse
So I need to download scala for one of my classes. I am using a mac pro and the command line to do so.
I downloaded sbt using homebrew which worked fine.
After these are the directions given:
Install the SBT plugin:
mkdir ~/.sbt
mkdir ~/.sbt/0.13
mkdir ~/.sbt/0.13/plugins
echo 'addSbtPlugin("edu.umass.cs" % "cmpsci220" % "3.0.0")' > ~/.sbt/0.13/plugins/plugins.sbt
To verify that everything is installed, I have to type 'sbt' to start SBT. Once typed, I should see output that looks like this:
[info] Loading global plugins from /Users/arjun/.sbt/0.13/plugins
[info] Updating {file:/Users/arjun/.sbt/0.13/plugins/}global-plugins...
[info] Resolving org.fusesource.jansi#jansi;1.4 ...
[info] downloading https://repo.scala-sbt.org/scalasbt/sbt-plugin-releases/edu.umass.cs/cmpsci/scala_2.10/sbt_0.13/3.0.0/jars/cmpsci.jar ...
[info] [SUCCESSFUL ] edu.cs#cmpsci;3.0.0!cmpsci.jar (1261ms)$
However, My issue is that once I type 'sbt' to verify things I get this line:
[info] Set current project to home (in build file:/Users/home/)
It asks me for a command. I have tried 'run', 'test', 'update'. They all run fine but it keeps asking me a command.
My goal is to get to the 'sbt console' so I can run scala, import packages, scripts, etc..
Any ideas on what the issue is?
You need to be in the folder of your SBT project to do sbt run.
First cd into it, then sbt run to run it (or sbt test or whatever :))
Type console at the sbt prompt.
Edit:
So actually, why do you think this is what you want? Are you trying to run scala code that you're given? Or are you trying to write scala code? If the latter, you should download intellij and the scala plugin.
Please make sure there is a scala file in the directory you run sbt.
You may also check this for others: http://www.scala-sbt.org/0.13/docs/Hello.html
I've been trying to use sbt for one of my projects, however I've ran into the following problem - when I try to use sbt console to get the scala's REPL, it just doesn't allow any input. Example session:
[lared#lt foo]$ sbt
[info] Set current project to foo (in build file:/tmp/foo/)
> console
[info] Updating {file:/tmp/foo/}foo...
[info] Resolving org.scala-lang#scala-reflect;2.10.3 ...
[info] Done updating.
[info] Starting scala interpreter...
[info]
Welcome to Scala version 2.10.3 (OpenJDK 64-Bit Server VM, Java 1.8.0_25).
Type in expressions to have them evaluated.
Type :help for more information.
scala>
I can not type anything. It doesn't seem to take much RAM/CPU time. The problem is reproducible in any directory, regardless of if it does have a proper project structure (for example the SBT Hello World tutorial) or not.
I'm using sbt 0.13.1 and the JDK/Scala versions as seen above on Fedora 21.
The problem was solved by deleting ~/.ivy2/ and (perhaps unrelated) migration to Oracle Java 1.7 SDK.
I could not find a way to get the Fedora 24 installed sbt 0.13.1 console to work either so I downloaded the latest sbt (currently 0.13.12), unzipped into /opt and add the sbt binary to my path before /usr/bin/sbt.
The earlier suggestion to delete ~/.ivy2 did not work for me.
I am running a remote nrepl server (mvn clojure:nrepl) and connecting via emacs M-x cider-connect. When the JVM exists for any reason or I call (System/exit 0) in my repl the *nrepl* buffer is immediately closed.
How do I prevent that behavior?
How do I make it so that subsequent connections reuse that buffer?
Thanks!
edit: previous: "connecting via emacs M-x nrepl"
update:
switched to:
; CIDER 0.8.0alpha (package: 20141116.1221) (Java 1.7.0_21, Clojure 1.6.0, nREPL 0.2.5)
if I run mvn dependency:tree what I see includes the following:
[INFO] +- org.clojure:tools.nrepl:jar:0.2.5:compile
[INFO] +- cider:cider-nrepl:jar:0.8.0-SNAPSHOT:compile
however in Emacs I see the following after a M-x cider-connect:
; CIDER 0.8.0alpha (package: 20141116.1221) (Java 1.7.0_21, Clojure 1.6.0, nREPL 0.2.5)
WARNING: The following required nREPL ops are not supported:
apropos classpath complete eldoc info inspect-start inspect-refresh inspect-pop inspect-push inspect-reset macroexpand ns-list ns-vars resource stacktrace toggle-trace-var toggle-trace-ns undef
Please, install (or update) cider-nrepl 0.8.0-SNAPSHOT and restart CIDER
and after closing the REPL and then trying to restart it I see An nREPL connection buffer already exists ... create a new one? (y or n) either answer appears to be the wrong one.
The old buffer isn't deleted at least, but it appears unusable.