v1.0.6

Scala CLI won't default to the system JVM if it's not supported anymore

If your JAVA_HOME environment variable has been pointing to a JVM that is no longer supported by Scala CLI (so anything below 17, really), you may have run into an error like this one with Scala CLI v1.0.5:

scala-cli --power bloop exit 
# Stopped Bloop server.  
export JAVA_HOME=$(cs java-home --jvm zulu:8)
scala-cli -e 'println(System.getProperty("java.version"))'                
# Starting compilation server
# Error: bloop.rifle.FailedToStartServerExitCodeException: Server failed with exit code 1
# For more details, please see '/var/folders/5n/_ggj7kk93czdt_n0jzrk8s780000gn/T/1343202731019130640/.scala-build/stacktraces/1699527280-9858975811713766588.log'
# Running
#   scala-cli --power bloop output
# might give more details.

This is because we no longer support JVM <17 with Scala CLI v1.0.5, but we still have been defaulting to whatever JVM was defined in JAVA_HOME. As a result, Bloop has been failing to start when running with, say, JAVA_HOME pointing to Java 8.

This is no longer the case. Scala CLI will now automatically download Java 17 for Bloop in such a situation (and still use the JVM from JAVA_HOME for running the code, while Bloop runs on 17).

scala-cli --power bloop exit 
# Stopped Bloop server.  
export JAVA_HOME=$(cs java-home --jvm zulu:8)
scala-cli -e 'println(System.getProperty("java.version"))'                
# Starting compilation server
# Compiling project (Scala 3.3.1, JVM (8))
# Compiled project (Scala 3.3.1, JVM (8))
# 1.8.0_392

Added by @tgodzik in #2508.

Other changes

Fixes

• Fix --watch failing on invalid PathWatchers.Event & skip wonky tests on Mac CI by @Gedochao in #2515
• bugfix: Don't try to always get system jvm first by @tgodzik in #2508

Documentation changes

• Back port of documentation changes to main by @github-actions in #2522
• add cookbook about Emacs integration by @ag91 in #2506

Build and internal changes

• Bump actions/setup-node from 3 to 4 by @dependabot in #2493
• Update scala-cli.sh launcher for 1.0.5 by @github-actions in #2500
• Simplify build by @lolgab in #2512
• Fix wonky native MacOS CI on stable branch by @Gedochao in #2518
• Add regexes for release-notes github reference swapping by @MaciejG604 in #2519

Updates and maintenance

• Update scalafmt-cli_2.13, scalafmt-core to 3.7.15 by @scala-steward in #2498
• Switch lightweight-spark-distrib to the VL fork & bump to 0.0.5 by @Gedochao in #2503
• Bump VirtusLab/scala-cli-setup from 1.0.4 to 1.0.5 by @dependabot in #2504
• Switch java-class-name to the VL fork & bump to 0.1.3 by @Gedochao in #2502
• Update sbt to 1.9.7 by @scala-steward in #2505
• Update os-lib to 0.9.2 by @scala-steward in #2514
• Update case-app to 2.1.0-M26 by @scala-steward in #2513
• Update mill-main to 0.11.5 by @scala-steward & @MaciejG604 in #2446
• Update core_2.13 to 3.9.1 by @scala-steward in #2521
• Switch nocrc32-zip-input-stream to the VL fork & bump it to 0.1.2 by @Gedochao in #2520

New Contributors

• @ag91 made their first contribution in #2506

Full Changelog: v1.0.5...v1.0.6