Fixes https://github.com/sbt/sbt/issues/5934
In #5886 adpi2 reported that Test / scalacOptions could have unwanted duplicated flags from Compile / scalacOptions. So #5887 added
```diff
+ // remove duplicated semanticdbOptions
+ scalacOptions --= (Compile / semanticdbOptions).value
```
Notice that it's subtracting (Compile / semanticdbOptions).value regardless of the semanticdbEnabled value. If semanticdbEnabled is set to true I am guessing that it would all work out, but when it's false, it's just subtracting "-Yrangepos".
This fixes that by checking for semanticdbEnabled.
Second take at https://github.com/sbt/sbt/issues/5886, which fixed the
problem for Test specifically but not for custom configurations.
* Any child of Compile (like Custom in the scripted) had to use
testSettings, whether they were related to testing or not
* Custom configurations with grand parents (like SystemTest in the
scripted) would get duplicated scalacOptions no matter what they used
Scala compiler changed the implementation of reporter in 2.12.13 such that overriding `info0` no longer increments the error count in the delegating reporter.
See https://github.com/scala/bug/issues/12317 for details.
Fixes https://github.com/sbt/sbt/issues/6235
In sbt 1.4.0 (https://github.com/sbt/sbt/pull/5344) we started wiping out the timestamps in JAR
to make the builds more repeatable.
This had an unintended consequence of breaking Play's last-modified response header (https://github.com/playframework/playframework/issues/10572).
This adds a global setting called `packageTimestamp`, which is
initialized as follows:
```scala
packageTimestamp :== Package.defaultTimestamp,
```
Here the `Package.defaultTimestamp` would pick either the value from the
`SOURCE_DATE_EPOCH` environment variable or 2010-01-01.
To opt out of this default, the user can use:
```scala
ThisBuild / packageTimestamp := Package.keepTimestamps
// or
ThisBuild / packageTimestamp := Package.gitCommitDateTimestamp
```
Before (sbt 1.4.6)
------------------
```
$ ll example
total 32
-rw-r--r-- 1 eed3si9n wheel 901 Jan 1 1970 Greeting.class
-rw-r--r-- 1 eed3si9n wheel 3079 Jan 1 1970 Hello$.class
-rw-r--r-- 1 eed3si9n wheel 738 Jan 1 1970 Hello$delayedInit$body.class
-rw-r--r-- 1 eed3si9n wheel 875 Jan 1 1970 Hello.class
```
After (using Package.gitCommitDateTimestamp)
--------------------------------------------
```
$ unzip -v target/scala-2.13/root_2.13-0.1.0-SNAPSHOT.jar
Archive: target/scala-2.13/root_2.13-0.1.0-SNAPSHOT.jar
Length Method Size Cmpr Date Time CRC-32 Name
-------- ------ ------- ---- ---------- ----- -------- ----
288 Defl:N 136 53% 01-25-2021 03:09 888682a9 META-INF/MANIFEST.MF
0 Stored 0 0% 01-25-2021 03:09 00000000 example/
901 Defl:N 601 33% 01-25-2021 03:09 3543f377 example/Greeting.class
3079 Defl:N 1279 59% 01-25-2021 03:09 848b4386 example/Hello$.class
738 Defl:N 464 37% 01-25-2021 03:09 571f4288 example/Hello$delayedInit$body.class
875 Defl:N 594 32% 01-25-2021 03:09 ad295259 example/Hello.class
-------- ------- --- -------
5881 3074 48% 6 files
```
Ref https://github.com/scala/scala-parallel-collections/issues/22
Parallel collection got split off without source-compatible library, so apparently we need to roll our own compat hack, which causes import not used, so it needs to be paired with silencer.
The bytecode generated by 2.13 compiler contains scala.runtime.BoxedUnit in the constant pool. To avoid referencing scala-library, port XMainConfiguration to Java.
eugene yokota
Ondra Pelech
Marcos Pereira
Matthias Kurz
Jason Pickens
Adrien Piquerez
Julien Richard-Foy
Rafał Sumisławski
Brice Jaglin
Marko Elezovic
Naoki Takezoe