Cannot pass system properties in comand line

[acaproni]

With scala 3.1.0 (installed from the tar file), it is not possible to pass system properties in the shell command line:

[ias@centos8 ~]$ which scala
/opt/scala3-3.1.0/bin/scala
[ias@centos8 ~]$ scala -version
Scala code runner version 3.1.0 -- Copyright 2002-2021, LAMP/EPFL
[ias@centos8 ~]$ scala -Dprop.name=propValue
bad option '-Dprop.name=propValue' was ignored
Welcome to Scala 3.1.0 (11.0.9.1, Java OpenJDK 64-Bit Server VM).
Type in expressions for evaluation. Or try :help.

scala>

[michelou]

Temporary workaround :

$ scalac -Dprop.name=propValue -repl
Welcome to Scala 3.1.0 (11.0.11, Java OpenJDK 64-Bit Server VM).
Type in expressions for evaluation. Or try :help.

scala> util.Properties.propOrNull("prop.name")
val res0: String = propValue

In Alessandro's example argument -Dprop.name=propValue is passed to object dotty.tools.MainGenericRunner (and not to java.exe) in bash script scala; thus it is the responsability of object MainGenericRunner to deal appropriately with that argument.

I guess method def process(...) in object MainGenericRunner needs to be modified.

[acaproni]

Thanks for the workaround michelou. REPL was an example. We have the same problem running a scala executable (.jar). This bug forbids us to deploy the scala suite (ias) in production.

[dwijnand]

With 3.1.1 coming up soon, I'm moving this, because it's not a regression in 3.1.0 and it has a workaround.

[acaproni]

@dwijnand, thanks for the update.
Ddoes it mean that we have to wait v3.2 to have the fix in production as the workaround upon is for REPL only?

[dwijnand]

No, it can be part of 3.1.2.

[BarkingBad]

You can do manual fix with replacing the scala bash script at your /usr/bin/scala or wherever you have scala installed with the newer one from here