Debian dependency restricts Java runtime to OpenJDK packages only

[ychromosome]

Description:

The current Debian dependency for jicofo is:

Depends: openjdk-17-jre-headless | openjdk-17-jre | openjdk-21-jre-headless | openjdk-21-jre

This restricts the package to OpenJDK-branded packages only.

In practice, this prevents other fully compatible Java runtimes (e.g. Eclipse Temurin / Adoptium) from satisfying the dependency, even though they provide Java 21 via standard virtual packages such as:

java-runtime (= 21)
java-runtime-headless (= 21)
java21-runtime
java21-runtime-headless

As a result, systems using Temurin 21 must keep OpenJDK 17 installed solely for dependency resolution.

Suggested improvement (preferred):

Switch to Debian virtual Java packages, for example:

Depends: java21-runtime-headless | java17-runtime-headless

This would allow any compliant JVM implementation to satisfy the dependency.

Alternative (less preferred):

Explicitly include additional runtime packages such as Temurin in the dependency list.

However, this approach does not scale well and requires ongoing maintenance as more JVM distributions exist.

Environment:

• Debian-based system
• jicofo version: 1.0-1174-1
• Java runtime: Eclipse Temurin 21 (temurin-21-jdk)