New comment by Wychmire on void-packages repository

https://github.com/void-linux/void-packages/issues/13139#issuecomment-529150829

Comment:
There isn't a dependency on `openjdk-jre` since you can also use `oracle-jre`. It's mentioned in the INSTALL.msg file.
Something like this should work to let the user choose which JRE they want (though they'd have to custom build it if they wanted oracle-jdk)
```
[...]
depends="[...] $(vopt_if openjdk "openjdk-jre") $(vopt_if oracle "oracle-jre")"
[...]

build_options="openjdk"
build_options="oracle"

desc_option_openjdk="Use openjdk-jre as the jre dependency"
desc_option_oracle="Use oracle-jre as the jre dependency"

build_options_default="openjdk"
vopt_conflict openjdk oracle

[...]
```