2.13.0-RC1 timing: January 2019

Announcements
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The good news is:

  • many more libraries have published for 2.13.0-M5
  • there will be no need for an 2.13.0-M6, as we had feared
  • the 2.13 community build is looking strong, with as many as 83 green projects (currently lower because of small recent breaking changes, but regaining that ground won’t be hard)
  • Julien has completed the work on updating parallel collections, and we will publish it for RC1
  • there are just 22 open RC1 PRs in scala/scala
  • scala/bug is down to 14 open RC1 issues on the RC1 milestone
    • plus just 2 RC1 tickets in scala-dev
    • and no open tickets left in collection-strawman, which is now archived

but the bad news is obvious, we didn’t make the January target, and a couple weeks or so of work remains.

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4

I wonder how long it will take Spark to make its way to 2.13 :wink:

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We have gone through the RC1 pull request queue (16 PRs) and marked blocker tickets as “prio:blocker” (11 of 16).

Anything without the blocker label is in real danger of missing RC1. Anything with the label, we’re very eager to get done ASAP and get RC1 out the door. So there is time pressure either way.

If you could use help getting something across the finish line, blocker or not, please ask on the PR, time is running short (perhaps as little as one week).

PRs: https://github.com/scala/scala/milestones/2.13.0-RC1

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The last really major RC1 PR is merged, integrating scala-java8-compat into stdlib: https://github.com/scala/scala/pull/7458

We’re now down to a single open RC1 PR at https://github.com/scala/scala/milestones/2.13.0-RC1

Additional issues may turn up as we push the changes through the 2.13 community build over the next few days.

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7

I’ve opened two tickets with lists of projects in the 2.13 community build that need attention:

the currently nightly is 2.13.0-pre-bd28253

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Since my last update, we’ve merged about 10 additional PRs for RC1.

There are now no known RC1 blocker bugs, and only one in-flight PR that Adriaan is working to finish (PR 7929).

As for the community build, thanks to community help with https://github.com/scala/bug/issues/11453, we’re up to 94 green projects now, and in addition, a number of not-yet-green projects were investigated and determined not to have uncovered Scala regressions.

Akka is the remaining community build project we want to either get green, or verify that any failures are harmless. Akka is important both as a cornerstone of a sector of the Scala ecosystem, and as a test of the viability of the new stdlib APIs that replace the scala-java8-compat module.

Lukas now has Akka compiling with the latest Scala nightly, but there are test failures that remain to be investigated.

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9

Final PRs merged, community build looking good.

Today we will work on repackaging 2.13.0-pre-63769af as 2.13.0-RC1.

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10

(Note that anyone wanting to track progress in gory detail can keep an eye on https://github.com/scala/scala-dev/issues/599)

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11

RC1 is on Maven Central now.

We will wait to make a broader announcement until modules are published along with a few key libraries like ScalaCheck.

Draft release notes, feedback and corrections welcome: https://gist.github.com/SethTisue/5baa94c7d6c2f7f939a53a75f3c9816e

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12

Seb expects to publish Scala.js tomorrow morning, then the rest of us can start publishing (including modules).

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13

Scala.js 0.6.27 with support for 2.13.0-RC1 (and still M5 as well) is on its way to Maven Central. Scala.js 1.0.0-M7’s CI is still running.

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14

com.lihaoyi:sourcecode_2.13.0-RC1:0.1.6 is published now

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15

Scala.js 1.0.0-M7 is now on its way to Maven Central.

portable-scala-reflect and scalajs-stubs to follow.

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16

scalajs-stubs (JVM-only) 1.0.0-RC1 for Scala 2.13.0-RC1 on its way to Maven Central.

portable-scala-reflect 0.1.0 for JVM 2.13.0-RC1, JS 0.6.x with 2.13.0-RC1 and JS 1.0.0-M7 for 2.11/2.12/2.13.0-M5/2.13.0-RC1 on their way to Maven Central.

And now, it’s time for a nap…

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17

published:

  • scala-xml 1.2.0 (thanks @ashawley!)
  • scala-parallel-collections 0.2.0 (thanks @julienrf!)
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18

published:

  • scala-parser-combinators 1.1.2 (thanks @Philippus!)
  • scalacheck 1.14.0 (thanks @rickynils!)
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using scala-parser-combinators 1.1.2 on Scala 2.11 may run afoul of a classpath clash between 1.1.2 and the version the Scala 2.11 compiler uses internally; see https://github.com/scala/scala-parser-combinators/issues/197 for details and workarounds

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ScalaTest 3.0.8-RC2 is now available (thanks @cheeseng!)

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21

@SethTisue Thank you for organizing the Scala community toward Scala 2.13.0-RC1. I’m really impressed with the number of Scala 2.13.0-RC1-ready libraries, including ScalaTest, scala-xml, etc.

Releasing Airframe for Scala 2.13.0-RC1 https://wvlet.org/airframe/docs/release-notes.html#1941 was quite smooth compared to the work for the past milestone releases.

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22

shapeless 2.3.3 is now available too.

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