How to tell sbt-proguard to include java *.jars? - scala

I'm trying to make single executable *.jar via proguard plugin for sbt 10.*.
All seems to be okay, except that sbt-proguard doesn't include java jars (in my case mysql-connector-java-5.1.10.jar) cause when I'm trying to run output jar with
java -jar proguard-output.min.jar
I'm getting
Exception in thread "main" java.lang.ClassNotFoundException: com.mysql.jdbc.Driver
(while sbt `run` goes fine so mysql connector is definitely in project).
I've tried to leverage that problem by adding jar explicitly in build.sbt:
proguardInJars += Path.userHome / ".m2" / "repository" / "mysql" / "mysql-connector-java" / "5.1.10" / "mysql-connector-java-5.1.10.jar"
moreover in proguard log:
...
Preparing output jar
...
Copying resources from program jar [/home/kostya/.m2/repository/mysql/mysql-connector-java/5.1.10/mysql-connector-java-5.1.10.jar] (filtered)
...
But I'm still getting the same exception. What am I doing wrong?

The class is specified in the input, but the code only instantiates it by introspection, which ProGuard can't know. You therefore have to specify explicitly that it has to be preserved in the output.
Cfr. ProGuard manual > Examples > Processing database drivers
Cfr. ProGuard manual > Troubleshooting > ClassNotFoundException
A safer solution is probably not to process third-party jars like the JDBC driver, but to specify them as library jars instead.

Related

Using Gephi inside a Play Application

I am currently building a Play Framework application in Scala that requires the use of the Gephi Java library.
I tried adding Gephi as a managed dependency in SBT, but SBT cannot resolve all of Gephi's dependencies. This is a known issue. I then simply tried to add the whole Gephi JAR in my lib/ folder as an unmanaged dependency. IntelliJ detects the library just fine and I can compile my application perfectly fine. The problem is an exception occurs immediately upon starting the application, and it seems to be related to dependency injection:
play.api.UnexpectedException: Unexpected exception[NoSuchMethodError: com.google.common.base.Objects.firstNonNull(Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Object;]
at play.core.server.DevServerStart$$anonfun$mainDev$1$$anon$1$$anonfun$get$1$$anonfun$apply$1$$anonfun$1.apply(DevServerStart.scala:174)
at play.core.server.DevServerStart$$anonfun$mainDev$1$$anon$1$$anonfun$get$1$$anonfun$apply$1$$anonfun$1.apply(DevServerStart.scala:126)
at scala.Option.map(Option.scala:146)
at play.core.server.DevServerStart$$anonfun$mainDev$1$$anon$1$$anonfun$get$1$$anonfun$apply$1.apply(DevServerStart.scala:126)
at play.core.server.DevServerStart$$anonfun$mainDev$1$$anon$1$$anonfun$get$1$$anonfun$apply$1.apply(DevServerStart.scala:124)
at scala.util.Success.flatMap(Try.scala:231)
at play.core.server.DevServerStart$$anonfun$mainDev$1$$anon$1$$anonfun$get$1.apply(DevServerStart.scala:124)
at play.core.server.DevServerStart$$anonfun$mainDev$1$$anon$1$$anonfun$get$1.apply(DevServerStart.scala:116)
at scala.concurrent.impl.Future$PromiseCompletingRunnable.liftedTree1$1(Future.scala:24)
at scala.concurrent.impl.Future$PromiseCompletingRunnable.run(Future.scala:24)
Caused by: java.lang.NoSuchMethodError: com.google.common.base.Objects.firstNonNull(Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Object;
at com.google.common.cache.CacheBuilder.getKeyStrength(CacheBuilder.java:529)
at com.google.common.cache.LocalCache.<init>(LocalCache.java:242)
at com.google.common.cache.LocalCache$LocalManualCache.<init>(LocalCache.java:4718)
at com.google.common.cache.CacheBuilder.build(CacheBuilder.java:807)
at com.google.inject.internal.WeakKeySet.<init>(WeakKeySet.java:55)
at com.google.inject.internal.InheritingState.<init>(InheritingState.java:67)
at com.google.inject.internal.InjectorShell$Builder.getState(InjectorShell.java:209)
at com.google.inject.internal.InjectorShell$Builder.lock(InjectorShell.java:115)
at com.google.inject.internal.InternalInjectorCreator.build(InternalInjectorCreator.java:103)
at com.google.inject.Guice.createInjector(Guice.java:96)
I tried removing all mention of Gephi in the code, while still having the JAR sitting in my lib/ folder, but it results in the same exception.
Gephi is really important for this project, so I can't just move on to another library. Any ideas?
Remove that jar fom lib, add those two additional resolvers (in build.sbt)
resolvers += "NetBeans" at "http://bits.netbeans.org/nexus/content/groups/netbeans/"
resolvers += "gephi" at "https://raw.github.com/gephi/gephi/mvn-thirdparty-repo/"
and run activator update

NoClassDefFoundError for Play app with sbt using Eclipse

I am trying to write a Play 2.3.8 application in Scala, managing it via sbt but editing it in Eclipse. I worked round one problem, but this seems to introduce another, and cannot work out how to solve it.
I set up the project using the exact instructions to Create a new application without Activator (except I also add
scalaVersion := "2.11.6"
to build.sbt), then I cd to my project directory, type sbt and once in sbt I type eclipse. Then I open Eclipse and happily import the project.
Now I create a simple template (app/views/Application/index.scala.html) and a controller which calls it (app/controllers/Application.scala). When I go into sbt and type run I can happily open my web browser at localhost:9000 and my populated template appears.
All is good apart from one problem (the first one). When I open up Application.scala in Eclipse I get a wiggly red error line saying "object Application is not a member of package views.html". I solved that using Nick Cooper's answer elsewhere on Stack Overflow. He said to go to Project > Properties > Java Build Path > Libraries > Add Class Folder... and then add target/scala-2.11/classes_managed. That makes the error go away. But I don't want to manage Eclipse's settings directly; I want to manage everything via sbt. So by trial and error I found that I can add this line to my build.sbt file...
unmanagedJars in Compile += ( baseDirectory.value / "target/scala-2.11/classes_managed" )
...and now I can type sbt followed by eclipse and Eclipse's config is generated correctly, with no wiggly red line errors.
But this creates a second problem. It turns out that by introducing that line into build.sbt the application no longer runs. Specifically when I go into sbt, type run and open localhost:9000 I get a NoClassDefFoundError exception in my sbt console:
java.lang.NoClassDefFoundError: controllers/Application$
at Routes$$anonfun$routes$1$$anonfun$applyOrElse$1$$anonfun$apply$1.apply(routes_routing.scala:51) ~[classes_managed/:na]
at Routes$$anonfun$routes$1$$anonfun$applyOrElse$1$$anonfun$apply$1.apply(routes_routing.scala:51) ~[classes_managed/:na]
at play.core.Router$HandlerInvokerFactory$$anon$13$$anon$14.call(Router.scala:217) ~[play_2.11-2.3.8.jar:2.3.8]
at play.core.Router$Routes$TaggingInvoker.call(Router.scala:464) ~[play_2.11-2.3.8.jar:2.3.8]
at Routes$$anonfun$routes$1$$anonfun$applyOrElse$1.apply(routes_routing.scala:51) ~[classes_managed/:na]
Caused by: java.lang.ClassNotFoundException: controllers.Application$
at java.net.URLClassLoader.findClass(URLClassLoader.java:381) ~[na:1.8.0_40]
at java.lang.ClassLoader.loadClass(ClassLoader.java:424) ~[na:1.8.0_40]
at java.lang.ClassLoader.loadClass(ClassLoader.java:357) ~[na:1.8.0_40]
at Routes$$anonfun$routes$1$$anonfun$applyOrElse$1$$anonfun$apply$1.apply(routes_routing.scala:51) ~[classes_managed/:na]
at Routes$$anonfun$routes$1$$anonfun$applyOrElse$1$$anonfun$apply$1.apply(routes_routing.scala:51) ~[classes_managed/:na]
[error] application - Error while rendering default error page
scala.MatchError: java.lang.NoClassDefFoundError: controllers/Application$ (of class java.lang.NoClassDefFoundError)
at play.api.GlobalSettings$class.onError(GlobalSettings.scala:148) ~[play_2.11-2.3.8.jar:2.3.8]
at play.api.DefaultGlobal$.onError(GlobalSettings.scala:206) [play_2.11-2.3.8.jar:2.3.8]
at play.core.server.Server$class.logExceptionAndGetResult$1(Server.scala:63) [play_2.11-2.3.8.jar:2.3.8]
at play.core.server.Server$$anonfun$getHandlerFor$4.apply(Server.scala:73) [play_2.11-2.3.8.jar:2.3.8]
at play.core.server.Server$$anonfun$getHandlerFor$4.apply(Server.scala:71) [play_2.11-2.3.8.jar:2.3.8]
You can see the entire (tiny) codebase on Github.
All the class files seem to be all there, and in exactly the same locations, regardless of whether or not I include the "unmanagedJars" line. It's not an Eclipse problem because it happens even when Eclipse is closed. It seems to be a classpath issue (but I can't understand why adding to a classpath should hide some classes). Regardless of that, I'd like to manage my project with sbt and use Eclipse just as the editor. What am I getting wrong?
I have found a solution through further trial and error. Instead of extending the classpath to "target/scala-2.11/classes_managed" it should be extended to "target/scala-2.11/classes". In other words the line in build.sbt should be
unmanagedJars in Compile += ( baseDirectory.value / "target/scala-2.11/classes" )
Now from sbt I can compile, test and run the application, and connect successfully to localhost:9000, and I can also open the files in Eclipse without seeing error lines.
I still don't know why the NoClassDefFoundError really occurred in the previous setup, but that's a problem for another day.
I am using activator but I guess it might be the same.
So, Eclipse does not really like structural changes in a Play project or adding/removing libraries (via libraryDependencies, etc) and displays red squiggly things everywhere. This is how I solve them:
activator clean compile
If I have added/removed libraries, I run
activator eclipse
so that Eclipse gets the changes.
It works everytime. Clean, clean, clean. I actually found this solution somewhere on the Net a while a go but cannot remember where, sorry.
EDIT
And refresh the project in Eclipse!

Importing MySQL JDBC driver in lift

I'm trying to establish a database connection in my lift app using the mysql jdbc driver. I included the jar file in the eclipse build path, but building with importing the jar using import com.mysql._the app with sbt always throws the error:
object mysql is not a member of package com
Setting the classpath in the sdb.bat didn't help neither setting the system classpath variable.
set SCRIPT_DIR=%~dp0
java -Dscala.userjavacp=true -cp "%SCRIPT_DIR%\src\main\java\mysql.jar" -XX:+CMSClassUnloadingEnabled -XX:MaxPermSize=256m -Xmx1024M -Xss2M -jar "%SCRIPT_DIR%\sbt-launch-0.12.1.jar" %*
SBT doesn't know anything about Eclipse build path. You need to add dependencies in the way SBT understands, e.g.:
add jars to lib and they will be placed on the project classpath. Not much else to it!
I would suggest using the SBT Eclipse plugin and then use SBT to manage your dependencies which should keep the two programs in sync.
So, for MySQL, you'd want to modify your sbt configuration in your project to include:
libraryDependencies += "mysql" % "mysql-connector-java" % "5.1.6"
Then all you would need to do is launch sbt, and type eclipse to update your Eclipse configuration files with the correct classpath. When you restart Eclipse, everything should work.
The plugin will also pick up files in the lib directory as noted in the other answer.

How can I let sbt download the source of scala-library.jar?

I know if I add withSources when I define one dependency, sbt can download that sources jar file automatically.
For example,
val specs = "org.scala-tools.testing" % "specs_2.8.1" % "1.6.6" % "test" withSources ()
But for the scala-library.jar and scala-compiler.jar, I don't need define them explicitly, how can I get sbt download their sources for me? So, I don't need config it manually after generate idea project using sbt-idea-plugin.
You have to change the boot properties. There is a nice description in the recent blog decodified from Mathias:
"How to make SBT download scala library sources" (started from #hseeberger key starting points)
Here is the relevant part (in case that link ever goes stale)
First, forget about trying to find some “hidden” setting in your SBT project definition enabling Scala library source download! It does not exist (at least not in SBT version 0.7.x).
Rather, there are these two things you need to do in order to whip SBT into submission:
Create an alternative configuration file for your SBT launcher.
Make the SBT launcher use it.
These are the steps in detail:
Find your sbt-launcher-0.7.x.jar file.
Since I’m on OS/X and use SBT via Homebrew mine lives at /usr/local/Cellar/sbt/0.7.5.RC0/libexec/sbt-launch-0.7.5.RC0.jar.
Extract the sbt.boot.properties from the sbt sub directory in the launcher jar
Fire up your favorite editor and change line 3 to classifiers: sources (uncomment the line)
Find the sbt script file you created during your SBT setup (e.g. ~/bin/sbt, or, when using Homebrew, /usr/local/Cellar/sbt/0.7.x/bin/sbt)
Add the path to your tweaked sbt.boot.properties file, prepended with an ’#’ character and in double quotes, as the second-to-last argument of the java call.
This is what my sbt script file looks like:
#!/bin/sh
java -Xmx768M -XX:+CMSClassUnloadingEnabled -XX:MaxPermSize=256m \
-jar /usr/local/Cellar/sbt/0.7.5.RC0/libexec/sbt-launch-0.7.5.RC0.jar \
"#/usr/local/Cellar/sbt/0.7.5.RC0/libexec/sbt.boot.properties" \
"$#"
Once you have completed these steps SBT should happily download the scala-...-sources.jar files for the Scala compiler and standard library for any new project you create.
To have SBT do this for an existing project, you have to manually delete the project/boot/scala-{version} directory before performing an ‘sbt update’ (SBT does not fetch additional source artifacts if the main jar is already present).
Once you have a custom sbt.boot.properties file, there are also other ways to supply it to the SBT launcher.
See SO question "how do I get sbt to use a local maven proxy repository (Nexus)?"
Based on Michael Slinn comments:
If you are using sbt 0.11.x and above, use this command:
sbt update-sbt-classifiers
Two pieces of information.
(1) SBT Documentation
http://www.scala-sbt.org/0.13.5/docs/Detailed-Topics/Library-Management.html
and I quote:
"To obtain particular classifiers for all dependencies transitively, run the updateClassifiers task. By default, this resolves all artifacts with the sources or javadoc classifier."
This means you should not need to do anything, but you can make it explicit and put in you build.sbt:
transitiveClassifiers := Seq("sources", "javadoc")
To actually get the sources downloaded by SBT then you do:
"updateClassifiers"
(2) If you are working with Eclipse scala IDE - most likely you are as development of plugins for Eclipse/Netebeans is a lot more active for eclipse - then you should configure your ecplise to find out the sources if you do the following.
EclipseKeys.withSource := true
Here is the documentation you should read,
https://github.com/typesafehub/sbteclipse/wiki/Using-sbteclipse

how do I get sbt to use a local maven proxy repository (Nexus)?

I've got an sbt (Scala) project that currently pulls artifacts from the web. We'd like to move towards a corporate-standardized Nexus repository that would cache artifacts. From the Nexus documentation, I understand how to do that for Maven projects. But sbt obviously uses a different approach. (I understand Ivy is involved somehow, but I've never used it and don't understand how it works.)
How do I tell sbt and/or the underlying Ivy to use the corporate Nexus repository system for all dependencies? I'd like the answer to use some sort of project-level configuration file, so that new clones of our source repository will automatically use the proxy. (I.e., mucking about with per-user config files in a dot-directory is not viable.)
Thanks!
Step 1: Follow the instructions at Detailed Topics: Proxy Repositories, which I have summarised and added to below:
(If you are using Artifactory, you can skip this step.) Create an entirely separate Maven proxy repository (or group) on your corporate Maven repository, to proxy ivy-style repositories such as these two important ones:
http://repo.typesafe.com/typesafe/ivy-releases/
http://repo.scala-sbt.org/scalasbt/sbt-plugin-releases/
This is needed because some repository managers cannot handle Ivy-style and Maven-style repositories being mixed together.
Create a file repositories, listing both your main corporate repository and any extra one that you created in step 1, in the format shown below:
[repositories]
my-maven-proxy-releases: http://repo.example.com/maven-releases/
my-ivy-proxy-releases: http://repo.example.com/ivy-releases/, [organization]/[module]/(scala_[scalaVersion]/)(sbt_[sbtVersion]/)[revision]/[type]s/[artifact](-[classifier]).[ext]
Either save that file in the .sbt directory inside your home directory, or specify it on the sbt command line:
sbt -Dsbt.repository.config=<path-to-your-repo-file>
Good news for those using older versions of sbt: Even though, in the sbt 0.12.0 launcher jar at least, the boot properties files for older sbt versions don't contain the required line (the one that mentions repository.config), it will still work for those versions of sbt if you edit those files to add the required line, and repackage them into the sbt 0.12.0 launcher jar! This is because the feature is implemented in the launcher, not in sbt itself. And the sbt 0.12.0 launcher is claimed to be able to launch all versions of sbt, right back to 0.7!
Step 2: To make sure external repositories are not being used, remove the default repositories from your resolvers. This can be done in one of two ways:
Add the command line option -Dsbt.override.build.repos=true mentioned on the Detailed Topics page above. This will cause the repositories you specified in the file to override any repositories specified in any of your sbt files. This might only work in sbt 0.12 and above, though - I haven't tried it yet.
Use fullResolvers := Seq( resolver(s) for your corporate maven repositories ) in your build files, instead of resolvers ++= or resolvers := or whatever you used to use.
OK, with some help from Mark Harrah on the sbt mailing list, I have an answer that works.
My build class now looks like the following (plus some other repos):
import sbt._
//By extending DefaultWebProject, we get Jetty support
class OurApplication(info: ProjectInfo) extends DefaultWebProject(info) {
// This skips adding the default repositories and only uses the ones you added
// explicitly. --Mark Harrah
override def repositories = Set("OurNexus" at "http://our.nexus.server:9001/nexus/content/groups/public/")
override def ivyRepositories = Seq(Resolver.defaultLocal(None)) ++ repositories
/* Squeryl */
val squeryl = "org.squeryl" % "squeryl_2.8.0.RC3" % "0.9.4beta5"
/* DATE4J */
val date4j = "hirondelle.date4j" % "date4j" % "1.0" from "http://www.date4j.net/date4j.jar"
// etc
}
Now, if I delete the Squeryl tree from my machine's .ivy2/cache directory, sbt tries to grab it from the Nexus tree with the appropriate URL. Problem solved!
All you need is to define a property file sbt.boot.properties which will allow you to:
redefine the ivy cache location (I need that because it would be otherwise part of our roaming Windows profile, which is severely limited in disk space in our shop. See Issue 74)
define any other Maven repo you want
C:\HOMEWARE\apps\sbt-0.74\sbt.boot.properties
[scala]
version: 2.7.7
# classifiers: sources, javadoc
[app]
org: org.scala-tools.sbt
name: sbt
version: read(sbt.version)
class: sbt.xMain
components: xsbti
cross-versioned: true
classifiers: sources, javadoc
[repositories]
local
my-nexus: http://my.nexus/nexus/content/repositories/scala-tools/, [organization]/[module]/[revision]/[type]s/[artifact](-[classifier]).[ext]
maven-local
# sbt-db: http://databinder.net/repo/, [organization]/[module]/[revision]/[type]s/[artifact](-[classifier]).[ext]
# maven-central
# scala-tools-releases
# scala-tools-snapshots
[boot]
directory: project/boot
properties: project/build.properties
prompt-create: Project does not exist, create new project?
prompt-fill: true
quick-option: true
[log]
level: debug
[app-properties]
project.name: quick=set(test), new=prompt(Name)[p], fill=prompt(Name)
project.organization: new=prompt(Organization)[org.vonc]
project.version: quick=set(1.0), new=prompt(Version)[1.0], fill=prompt(Version)[1.0]
build.scala.versions: quick=set(2.8.0.RC2), new=prompt(Scala version)[2.8.0.RC2], fill=prompt(Scala version)[2.8.0.RC2]
sbt.version: quick=set(0.7.4), new=prompt(sbt version)[0.7.4], fill=prompt(sbt version)[0.7.4]
project.scratch: quick=set(true)
project.initialize: quick=set(true), new=set(true)
[ivy]
cache-directory: C:\HOMEWARE\projects\.ivy2\cache
Note: this sbt.boot.properties file is inspired from:
the one mentioned in the "Generalized Launcher" page of the sbt project.
the one found within sbt-0.74 itself!
I have commented any external Maven repository definition, and added a reference to my own Nexus Maven repo.
The launcher may be configured in one of the following ways in increasing order of precedence:
Replace the /sbt/sbt.boot.properties file in the jar.
Put a configuration file named sbt.boot.properties on the classpath. Put it in the classpath root without the /sbt prefix.
Specify the location of an alternate configuration on the command line. This can be done by:
either specifying the location as the system property sbt.boot.properties
or as the first argument to the launcher prefixed by '#'.
The system property has lower precedence.
Resolution of a relative path is:
first attempted against the current working directory,
then against the user's home directory,
and then against the directory containing the launcher jar.
An error is generated if none of these attempts succeed.
Define a sbt.bat wrapper (in order to be sure to specify your sbt.boot.properties) like:
C:\HOMEWARE>more C:\HOMEWARE\bin\sbt.BAT
#echo off
set t=%~dp0
set adp0=%t:C:\="%"
set SBT_DIR=%adp0%..\apps\sbt-0.74
dir C:\%SBT_DIR%\sbt-launch-0.7.4.jar
# if needed, add your proxy settings
set PROXY_OPTIONS=-Dhttp.proxyHost=my.proxy -Dhttp.proxyPort=80xx -Dhttp.proxyUser=auser -Dhttp.proxyPassword=yyyy
set JAVA_OPTIONS=-XX:+CMSClassUnloadingEnabled -XX:MaxPermSize=256m -Xmx512M -cp C:\HOMEWARE\apps\sbt-0.74\sbt-launch-0.7.4
set SBT_BOOT_PROPERTIES=-Dsbt.boot.properties="sbt.boot.properties"
cmd /C C:\HOMEWARE\apps\jdk4eclipse\bin\java.exe %PROXY_OPTIONS% %JAVA_OPTIONS% %SBT_BOOT_PROPERTIES% -jar C:\HOMEWARE\apps\sbt-0.74\sbt-launch-0.7.4.jar %*
And your sbt will download artifacts only from:
your Nexus
your local Maven repo.
Just tested at home with an old Nexus opensource 1.6 I had running, java 1.6, sbt07.4
C:\Prog\Java\jdk1.6.0_18\jre\bin\java -Xmx512M -Dsbt.boot.properties=sbt.boot.properties - jar "c:\Prog\Scala\sbt\sbt-launch-0.7.4.jar"
That gives:
[success] Build completed successfully.
C:\Prog\Scala\tests\pp>sbt
Getting Scala 2.8.0 ...
downloading http://localhost:8081/nexus/content/repositories/scala/org/scala-lang/scala-compiler/2.8.0/scala-compiler-2.
8.0.jar ...
[SUCCESSFUL ] org.scala-lang#scala-compiler;2.8.0!scala-compiler.jar (311ms)
downloading http://localhost:8081/nexus/content/repositories/scala/org/scala-lang/scala-library/2.8.0/scala-library-2.8.
0.jar ...
[SUCCESSFUL ] org.scala-lang#scala-library;2.8.0!scala-library.jar (185ms)
:: retrieving :: org.scala-tools.sbt#boot-scala
confs: [default]
2 artifacts copied, 0 already retrieved (14484kB/167ms)
[info] Building project test 0.1 against Scala 2.8.0
[info] using sbt.DefaultProject with sbt 0.7.4 and Scala 2.7.7
If I try a funny value in the sbt.boot.properties file:
C:\Prog\Scala\tests\pp>sbt
Getting Scala 2.9.7 ...
:: problems summary ::
:::: WARNINGS
module not found: org.scala-lang#scala-compiler;2.9.7
==== nexus: tried
http://localhost:8081/nexus/content/repositories/scala/org/scala-lang/scala-compiler/2.9.7/scala-compiler-2.9.7.pom
-- artifact org.scala-lang#scala-compiler;2.9.7!scala-compiler.jar:
http://localhost:8081/nexus/content/repositories/scala/org/scala-lang/scala-compiler/2.9.7/scala-compiler-2.9.7.jar
So it does limit itself to the two repo I defined:
[repositories]
nexus: http://localhost:8081/nexus/content/repositories/scala
nexus2: http://localhost:8081/nexus/content/repositories/scala, [organization]/[module]/[revision]/[type]s/[artifact](-[classifier]).[ext]
(I commented everything else: local, maven-local, ...)
If I comment all repositories and put a funny value (2.7.9) for the scala version in the sbt.boot.properties, I do get (like the OP did)
C:\Prog\Scala\tests\pp>sbt
Error during sbt execution: No repositories defined.
If I put 2.7.7 (while still having all repo commented), yes, it won't generate an error:
C:\Prog\Scala\tests\pp>sbt
[info] Building project test 0.1 against Scala 2.8.0
[info] using sbt.DefaultProject with sbt 0.7.4 and Scala 2.7.7
But that's only because it already had downloaded scala2.8.0 during my previous tries.
If I remove that library from my project/boot directory, then it will throw an Exception:
[info] using sbt.DefaultProject with sbt 0.7.4 and Scala 2.7.7
> C:\Prog\Scala\tests\pp>sbt
Error during sbt execution: No repositories defined.
at xsbt.boot.Pre$.error(Pre.scala:18)
at xsbt.boot.Update.addResolvers(Update.scala:197)
...
at xsbt.boot.Boot$.main(Boot.scala:15)
at xsbt.boot.Boot.main(Boot.scala)
Error loading project: Error during sbt execution: No repositories defined.
edit the config file in sbt_home/conf "sbtconfig.txt"
add two line
-Dsbt.override.build.repos=true
-Dsbt.repository.config="C:/Program Files (x86)/sbt/conf/repo.properties"
the repo.properties content is
[repositories]
local
public: http://222.vvfox.com/public <-fix this ,write your local nexus group url
Well this has bugged me for a while so I found a guy that has written an SBT plugin for maven out on github called maven-sbt so all you have to do is include it in your plugins project and make your project mixin with maven.MavenDependencies and all your operations like update and publish-local work with your local maven. The nice thing about that is if you are like me, your org is all maven. So, all you libs are in you local maven repo but if for some reason you build with sbt first, then you start getting a bunch or jars in ivy too. What a waste of space, and time since you will still need to get them for your maven builds.
That said, I wish this were built into sbt so I would not need to add it to every project. Maybe as a processor at least. He mentioned in one thing I read that he would like to add it to 0.9 but I have not been able to find it.
I got this error because I had a blank file in ~/.sbt/repositories. Both adding repositories to the file and removing the file solved the problem.