Hello.
I tried installing the Minecraft launcher on Debian 10 and dpkg threw the following error.
dpkg: dependency problems prevent configuration of minecraft-launcher:
{{ minecraft-launcher depends on oracle-java8-installer | openjdk-8-jre; however:}}
{{ Package oracle-java8-installer is not installed.}}
{{ Package openjdk-8-jre is not installed.}}
{{ minecraft-launcher depends on gconf-service; however:}}
{{ Package gconf-service is not installed.}}
{{ minecraft-launcher depends on libgconf-2-4 (>= 2.31.1); however:}}
{{ Package libgconf-2-4 is not installed.}}
{{ minecraft-launcher depends on libpango1.0-0 (>= 1.14.0); however:}}
{{ Package libpango1.0-0 is not installed.}}
{{ minecraft-launcher depends on xdg-utils (>= 1.0.2); however:}}
{{ Package xdg-utils is not installed.}}
{{ minecraft-launcher depends on libcurl3 | libcurl4; however:}}
{{ Package libcurl3 is not installed.}}
{{ Package libcurl4 is not installed.}}
dpkg: error processing package minecraft-launcher (--install):
{{ dependency problems - leaving unconfigured}}Processing triggers for bamfdaemon (0.5.4-1) ...Rebuilding /usr/share/applications/bamf-2.index...Processing triggers for desktop-file-utils (0.23-4) ...Processing triggers for mime-support (3.62) ...Processing triggers for hicolor-icon-theme (0.17-2) ...Errors were encountered while processing:
{{ minecraft-launcher}}
Then I tried installing these needed packages manually from apt. However, the packages oracle-java8-installer and openjdk-8-jre are both non-existent on Debian 10's repositories, both free and nonfree (no backports).
The dependencies were set to manually installed, so I tried again. This time, I installed the default-jre package to substitute the needed JRE. While dpkg did throw another error, the launcher works.
This seems to mostly be an error with Debian 10 having removed version 8 JREs in place of the version 11 OpenJDK JRE, whilst the Minecraft package still depends on the old (and now removed) version 8. The package openjdk-11-jre does exist and is what default-jre installed.
This is unlikely to be fixed anytime soon - Java 8 is required to run many versions of Minecraft, so the dependency is appropriate. It's possible to run some versions (notably latest vanilla versions) with newer Java versions, and if you want to walk that path you can always install the tarball instead and run with whatever version of Java you want.