Startup script does not work in ArchLinux

[GHOSTsama]

Currently, the startup script /usr/bin/josm does not work in ArchLinux because JavaFX was removed from the official repositories.

If JavaFX is not installed when you launch JOSM, it throws this error:

Using /usr/bin/java to execute josm.
Error occurred during initialization of boot layer
java.lang.module.FindException: Module javafx.web not found

Aparently it is due to this line, it is assumed that JavaFX is installed, when it is not.

Running java -jar /path/to/josm.jar it works, if JavaFX is an optional dependency, this should be considered when loading the modules as it might not be installed.

[taylor.smock]

Is this the JOSM start script provided by us, or by Arch Linux?
I know they've had to work around differences in the JavaFX package in the past; they should probably patch out the JavaFX modules if JavaFX is no longer available in the repos.

JOSM (by itself) does not require JavaFX; some plugins do require JavaFX (specifically Microsoft StreetSide and JavaFX).

[GHOSTsama]

The script is provided by JOSM, I think the script should verify that the default value of JAVAFX_HOME (/usr/share/openjfx/lib) exists before loading the modules