How to run a scala sbtpackaged jar file with java the. When you change a source file, zinc analyses the dependencies of. May 19, 2020 when you change a source file, zinc analyses the dependencies of your code and compiles the minimum subset of source files affected by your change. The end goal is producing the compiled output you asked for as quickly as. From download sources in the official documentation of sbt.
Zinc is a research project around curry, a functional logic programming language, at the university of oviedo spain it is composed of several subprojects. These seem to be issues with sbt setting itself up, before its even loaded the scalarr project. Meat is an excellent source of zinc red meat is a particularly great source, but ample amounts can be found in all different kinds of meat, including beef, lamb and pork in fact, a 100gram. It tries to be clever in compiling schemas with referenced types before dependent ones. Perhaps the ide autoimport needs some work to automate this step. Learn download support get involved source code sbt on twitter edit on github. I eventually got used to click the sbt refresh button whenever i change the dependencies in build. Minimal 3rd party dependencies are added in addition to the kafka client. When run locally as a background process, it speeds up builds of scalabased projects like spark. A thin scala wrapper over the official apache kafka java driver.
Note, this will download all sources from all configured dependencies. Share the class loader for scala classes between the incremental compiler implementation and the scalainstance where possible must be binary compatible 2. It was initially an abbreviation that stood for simple build tool, but it is now known simply as sbt. The jvm used by the zinc server will get hot over subsequent builds and lead to much better compilation times. How to manage project dependencies with sbt simple build. The former is used to locate classes referenced by the source code, and will typically contain scalalibrary along with other libraries. The simple scala build tool 2015 by josh suereth, matthew farwell getting started with sbt for scala 20 by shiti saxena indexed repositories 1277. Moreover, having finegrained files improves incremental compilation, since changes can be more easily localized by zinc the dependency tracker of sbt and most. You want to use sbt to compile and run a scala project, and package. Compilation instructions for scala veracode help center.
Zinc has already been integrated with the scala maven plugin, and were expecting incremental compilation to find its way into other build tools for scala. Now, in any scala file, you can import classes, objects, etc, from scalaparsercombinators with a regular import. Dec 01, 2014 with the sponsorship of linkedins tools team, the sbt project has investigated performance improvements on dependency resolution during most of 2014. The scalacompile and scaladoc tasks consume scala code in two ways. Its also possible to write a maven pom file or ivy.
You can find more published libraries on scaladex, the scala library index, where. However, sbt 1 is neither source nor binarycompatible with 0. Find the desktop downloads for mac and windows, mobile downloads for ios and android, as well as the web browser log in page. A managed dependency is a dependency thats managed by your build tool, in this case, sbt. Zinc is also being integrated with pants, a build tool for largescale codebases. In general, you do not want to build from trunk unless you are interested in the latest features. Sep 30, 2014 with sbt, all you need to do is add a line like addsbtplugincom. I am aware of sbt android plugin and sbt idea plugin but i want to avoid them for the following reason. Zinc is a longrunning server version of sbts incremental compiler. By default sbt will download dependencies from maven central, but you can configure it to use only an internal repository. All the scala source directories can contain scala and java code. Fixes recompiling in loop when a source generator or sbtbuildinfo is present. This causes sbt to use jdk even when java available on path is jdk 8 or 11. The command will download the necessary dependencies and create the spark2.
Components declare their dependencies, usually as constructor parameters, and a dependency injection framework helps you wire together those components so you you dont have to do so manually. If you recall from the previous tutorial on importing dependencies from sbt, weve used the groupid, artifactid and version in our build. Zinc is a standalone version of sbts incremental compiler. The lightbend tooling team is happy to announce the release of sbt 1. Using zinc as a build daemon, similar to sbts interactive shell, can dramatically improve build times. Bazel helps you keep track of dependencies between parts of your codebase. This module is useful for integrating with kafka for message consumptiondelivery, but provides some helpers for convenient configuration of the driver and usage from scala. Most people use managed dependencies instead of unmanaged. When you change a source file, zinc analyses the dependencies of your code.
Resolving jars with coursier and compiling scala with the zinc incremental compiler, in a selfcontained ammonite script test. New releases are meant to stay uptodate with latest. Mar 05, 2020 if you recall from the previous tutorial on importing dependencies from sbt, weve used the groupid, artifactid and version in our build. This would effectively remove all sbt dependencies, which i believe is a binary compatible change and is safe to release in sbt 1. Search and download functionalities are using the official maven repository. Coursier is a dependency resolver like ivy, rewritten in scala by alexandre. Note that this includes some degree of parallelism, as mentioned above. Resolving jars with coursier and compiling scala with the. Library management api and parallel artifact download. How to run a scala sbt packaged jar file with java the. This is based on zinc, the same engine that sbt is using. Originally this project was part of sbt, referred to as the incremental compiler module of sbt. By default sbt will download dependencies from maven central, but you can configure it. I need help with sbt, local dependencies, multipleprojects without the same rootdir and building a working.
There is a new effort concerning the development of zinc, which is hosted at sbt zinc. The first time you run sbt, it may take a while to download all the dependencies it needs, but after that first run, it will download new dependencies only as needed. Intellij import dependencies sbt dependencies and maven. The console and incremental compilation are nice, but the latter at least is possible with the maven plugin and zinc weve learned to live with sbt at my org, basically by finding a template. Getting started with scala and sbt on the command line. These plugins use the updateclassifiers and updatesbtclassifiers tasks, which produce an update report referencing these jars. Most of the time, you can simply list your dependencies in the setting. How to attach sources to sbt managed dependencies in scala ide. The commands executed in the solution, along with their output, are shown here. The zinc server is a longrunning process for running the scala compiler outside of the maven process. Almost 20 minutes to clean rebuild the app target, and 3 minutes to clean rebuild common. The scala plugin uses a configuration named zinc to resolve the zinc compiler and its dependencies. The latter is used to load and execute the scala compiler and scaladoc tool.
When you change a source file, zinc analyses the dependencies of your code and compiles the minimum subset of source files affected by your change. Sbt makes me want to give up scala after years of using and not particularly liking maven for java projects, and with getting by with a simple sbt file for scala work, i now have a more complex scala project and consequently im having to actually learn sbt. The source code of sbt is split across several github repositories, including this one. How to accelerate scala builds with bazel databricks. With sbt, all you need to do is add a line like addsbtplugincom.
I want to skip scala libraries for development but include them for release build, which seams requires a lot of digging if i do. This is pretty slow, and doesnt include the time needed to do other things in your workflow running tests, packaging docker containers, restarting. The latter is used to load and execute the scala compiler and scaladoc tool, respectively, and should only contain the scalacompiler library. Info compiling 203 scala sources and 9 java sources to. I have no idea how to tell sbt to download only the sources for single dependencies. One of the outcome is an experimental feature added to sbt 0. Zinc is a standalone version of sbt s incremental compiler. The scala plugin adds the following dependencies to tasks added by the java plugin. Kafka1570 sbt assemblypackagedependency fails with. Scala incremental compiler library, originally part. More info about extras, options, and ability to generate flame graphs see in sbtjmh docs.
Improving scala code with sbt by domingo valera march 01, 2016 scala sbt plugins functional programming. March 01, 2016 scala sbt plugins functional programming. However, this required a custom ant task, and both zinc and that task. To enable source classifiers and download the sources of your binary dependencies, you can enabled the following setting in your build. By default sbt will download dependencies from maven central, but you. This has been working well and im suggesting the same to colleagues when they hit the same problem.
The generated code should be identical to the output of a clean compile. How to attach sources to sbt managed dependencies in scala. Even delta builds, maybe adding a single println, take around 30 seconds. Weve previously discussed the scala build tool, sbt, and how easy it is to extend its abilities using plugins. The default builder remains refined, but you can enable the sbt builder in eclipse preferences scala compiler build manager. To prevent sbt from running on jdk, install jenv or switch to using sdkman. Add withsources to the dependency definition from download sources in the official documentation of sbt downloading source and api documentation jars is usually handled by an ide plugin. How to compile, run, and package a scala project with sbt. Gradle will provide a default version of zinc, but if you need to use a particular zinc version, you can change it. Sbt will then automatically download that plugin and its dependencies.
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