sbt 1.1.x releases 

sbt 1.1.6 

Bug fixes 

Contributors 

A huge thank you to everyone who’s helped improve sbt and Zinc 1 by using them, reporting bugs, improving our documentation, porting builds, porting plugins, and submitting and reviewing pull requests.

sbt 1.1.6 was brought to you by 15 contributors, according to git shortlog -sn --no-merges v1.1.5...v1.1.6 on sbt, zinc, librarymanagement, util, io, launcher-package, and website: Ethan Atkins, Eugene Yokota, Dale Wijnand, Aaron S. Hawley, OlegYch, Richard Summerhayes, Jannis (dadarakt), Rikito Taniguchi (tanishiking), Øyvind Høisæther, Daniel Westheide, Harrison Houghton, Holden Karau, Håkon Wold, Jason Zaugg, and tekay.


sbt 1.1.5 

Bug fixes 

Improvements 

Watcher improvements 

Continuing from sbt 1.1.4, Ethan Atkins contributed fixes and improvements for triggered execution ~ watcher. sbt 1.1.5 should fix the latency between file modification events and the command execution.

VS Code extension update 

We released a new sbt VS Code extension that starts sbt session in the embedded terminal window. This was contributed by Robert Walker (@WalkingOlof) in sbt#4130.

sbt by example 

We added sbt by example to the sbt documentation. This is a single-page guide that takes you from zero to building an app on Docker, inspired by, and largely based on William Narmontas (@ScalaWilliam)’s Essential sbt.

Contributors 

A huge thank you to everyone who’s helped improve sbt and Zinc 1 by using them, reporting bugs, improving our documentation, porting builds, porting plugins, and submitting and reviewing pull requests.

sbt 1.1.5 was brought to you by 21 constributors, according to git shortlog -sn --no-merges v1.1.4...v1.1.5 on sbt, zinc, librarymanagement, util, io, launcher-packege, and website: Eugene Yokota, Ethan Atkins, Jason Zaugg, Liu Fengyun, Antonio Cunei, Dale Wijnand, Roberto Bonvallet, Alexey Alekhin, Daniel Parks, Heikki Vesalainen, Jean-Luc Deprez, Jessica Hamilton, Kenji Yoshida (xuwei-k), Nikita Gazarov, OlegYch, Richard Summerhayes, Robert Walker, Seth Tisue, Som Snytt, oneill, and 杨博 (Yang Bo)


sbt 1.1.4 

Bug fixes 

Improvements 

Triggered execution on macOS 

sbt has long had issues with triggered execution on macOS. Ethan Atkins has contributed a fix for this problem by merging MacOSXWatchService from his CloseWatch. Thanks, Ethan!

Credit also goes to Greg Methvin and Takari’s directory-watcher. #3860/#4071/io#138 by @eatkins

Running sbt with standby 

One of the tricky things you come across while profiling is figuring out the process ID, while wanting to profile the beginning of the application.

For this purpose, we’ve added sbt.launcher.standby JVM flag. Starting sbt 1.1.4, you can run:

$ sbt -J-Dsbt.launcher.standby=20s exit

This will count down for 20s before doing anything else. launcher#51 by @eed3si9n

Loading performance improvement 

Using Flame graph (if you haven’t yet, check out Profiling JVM applications post), Jason Zaugg identified hashing code of the build file to be one of the hot paths during sbt startup. Flame graph supports Ctrl+F to filter on method names; and when I ran it, it showed 4.5% of the time was spent in Eval#evalCommon method.

Instead of creating an intermediate Array[Byte] and passing it to MessageDigest at the end, Jason suggested that we pass the arrays to MessageDigest#update in a more procedural style. After confirming that it worked, we’ve next identified file timestamp code to be the next bottle neck using Flame graph, so that was switched to using NIO. After both changes, Eval#evalCommon’s footprint reduced to 2.3%.

This means that your build loads slightly faster on sbt 1.1.4 (about 0.54s faster on akka/akka, for example). #4067 by @eed3si9n

Contributors 

A huge thank you to everyone who’s helped improve sbt and Zinc 1 by using them, reporting bugs, improving our documentation, porting builds, porting plugins, and submitting and reviewing pull requests.

sbt 1.1.4 was brought to you by 11 contributors, according to git shortlog -sn --no-merges v1.1.2...v1.1.4 on sbt, zinc, librarymanagement, util, io, launcher-packege, and website: Eugene Yokota, Dale Wijnand, 杨博 (Yang Bo), Ethan Atkins, Sam Halliday, Aaron S. Hawley, Gabriele Petronella, Jason Steenstra-Pickens, Jason Zaugg, Julien Jean Paul Sirocchi, and aumann.


sbt 1.1.2 

Bug fixes 

Improvements 

Internal 

Contributors 

sbt 1.1.2 was brought to you by 23 contributors, according to git shortlog -sn --no-merges v1.1.1...v1.1.2 on sbt, zinc, librarymanagement, util, io, launcher-packege, and website: Dale Wijnand, Eugene Yokota, Jason Zaugg, Kenji Yoshida (xuwei-k), Ethan Atkins, Martijn Hoekstra, Martynas Mickevičius, Dennis Hörsch, Hosam Aly, Antonio Cunei, Friedrich von Never, Hiroshi Ito, Ian Gabes, Jilen Zhang, Mathias Bogaert, Naohisa Murakami (tiqwab), Philippus Baalman, Ryan Bair, Seth Tisue, Ståle Undheim, Takuya Miyamoto (tmiyamon), Yasuhiro Tatsuno. Thank you!


sbt 1.1.1 

Bug fixes 

Improvements 

autoStartServer setting 

sbt 1.1.1 adds a new global Boolean setting called autoStartServer, which is set to true by default. When set to true, sbt shell will automatically start sbt server. Otherwise, it will not start the server until startSever command is issued. This could be used to opt out of server for security reasons.

#3922 by @swaldman

Contributors 

sbt 1.1.1 was brought to you by 16 contributors, according to git shortlog -sn --no-merges v1.1.0 ..v1.1.0 on sbt, zinc, librarymanagement, util, io, and website: Kenji Yoshida (xuwei-k), Eugene Yokota, Dale Wijnand, Antonio Cunei, Steve Waldman, Arnout Engelen, Deokhwan Kim, OlegYch, Robert Walker, Jorge Vicente Cantero (jvican), Claudio Bley, Eric Peters, Lena Brüder, Seiya Mizuno, Seth Tisue, j-keck. Thank you!


sbt 1.1.0 

This is a feature release for sbt 1.0.x series.

Features, fixes, changes with compatibility implications 

Features 

Fixes 

Improvements 

Unified slash syntax for sbt shell and build.sbt 

This adds unified slash syntax for both sbt shell and the build.sbt DSL. Instead of the current <project-id>/config:intask::key, this adds <project-id>/<config-ident>/intask/key where <config-ident> is the Scala identifier notation for the configurations like Compile and Test. (The old shell syntax will continue to function)

These examples work both from the shell and in build.sbt.

Global / cancelable
ThisBuild / scalaVersion
Test / test
root / Compile / compile / scalacOptions
ProjectRef(uri("file:/xxx/helloworld/"),"root")/Compile/scalacOptions
Zero / Zero / name

The inspect command now outputs something that can be copy-pasted:

> inspect compile
[info] Task: sbt.inc.Analysis
[info] Description:
[info]  Compiles sources.
[info] Provided by:
[info]  ProjectRef(uri("file:/xxx/helloworld/"),"root")/Compile/compile
[info] Defined at:
[info]  (sbt.Defaults) Defaults.scala:326
[info] Dependencies:
[info]  Compile/manipulateBytecode
[info]  Compile/incCompileSetup
....

#1812/#3434/#3617/#3620 by @eed3si9n and @dwijnand

sbt server 

sbt server feature was reworked to use Language Server Protocol 3.0 (LSP) as the wire protocol, a protocol created by Microsoft for Visual Studio Code.

To discover a running server, sbt 1.1.0 creates a port file at ./project/target/active.json relative to a build:

{"uri":"local:///Users/foo/.sbt/1.0/server/0845deda85cb41abcdef/sock"}

local: indicates a UNIX domain socket. Here’s how we can say hello to the server using nc. (^M can be sent Ctrl-V then Return):

$ nc -U /Users/foo/.sbt/1.0/server/0845deda85cb41abcdef/sock
Content-Length: 99^M
^M
{ "jsonrpc": "2.0", "id": 1, "method": "initialize", "params": { "initializationOptions": { } } }^M

sbt server adds network access to sbt’s shell command so, in addition to accepting input from the terminal, server also to accepts input from the network. Here’s how we can call compile:

Content-Length: 93^M
^M
{ "jsonrpc": "2.0", "id": 2, "method": "sbt/exec", "params": { "commandLine": "compile" } }^M

The running sbt session should now queue compile, and return back with compiler warnings and errors, if any:

Content-Length: 296
Content-Type: application/vscode-jsonrpc; charset=utf-8

{"jsonrpc":"2.0","method":"textDocument/publishDiagnostics","params":{"uri":"file:/Users/foo/work/hellotest/Hello.scala","diagnostics":[{"range":{"start":{"line":2,"character":26},"end":{"line":2,"character":27}},"severity":1,"source":"sbt","message":"object X is not a member of package foo"}]}}

#3524/#3556 by @eed3si9n

VS Code extension 

The primary use case we have in mind for the sbt server is tooling integration such as editors and IDEs. As a proof of concept, we created a Visual Studio Code extension called Scala (sbt).

Currently this extension is able to:

Filtering scripted tests using project/build.properties 

For all scripted tests in which project/build.properties exist, the value of the sbt.version property is read. If its binary version is different from sbtBinaryVersion in pluginCrossBuild the test will be skipped and a message indicating this will be logged.

This allows you to define scripted tests that track the minimum supported sbt versions, e.g. 0.13.9 and 1.0.0-RC2. #3564/#3566 by @jonas

Contributors 

sbt 1.1.0 was brought to you by 33 contributors, according to git shortlog -sn --no-merges v1.0.4..v1.1.0 on sbt, zinc, librarymanagement, util, io, and website: Eugene Yokota, Dale Wijnand, Antonio Cunei, Kenji Yoshida (xuwei-k), Alexey Alekhin, Simon Schäfer, Jorge Vicente Cantero (jvican), Miklos Martin, Jeffrey Olchovy, Jonas Fonseca, Andrey Artemov, Arnout Engelen, Dominik Winter, Krzysztof Romanowski, Roman Iakovlev, Wiesław Popielarski, Age Mooij, Allan Timothy Leong, Ivan Poliakov, Jason Zaugg, Jilen Zhang, Long Jinwei, Martin Duhem, Michael Stringer, Michael Wizner, Nud Teeraworamongkol, OlegYch, PanAeon, Philippus Baalman, Pierre Dal-Pra, Rafal Wojdyla, Saniya Tech, Tom Walford, and many others who contributed ideas. Thank you!

Contents

sbt Reference Manual
      1. sbt 1.1.x releases