temurin17-binaries VS org.freedesktop.Sdk.Extension.openjdk17

ok so it looks like java 17 isn't in the package manager, so you will have to download it, and install it manually. First you have to download the correct version of java (which you already did), wget https://github.com/adoptium/temurin17-binaries/releases/download/jdk-17.0.1%2B12/OpenJDK17U-jdk_arm_linux_hotspot_17.0.1_12.tar.gz Then you can make a directory for your java installation, sudo mkdir /opt/jdk Then you need to extract it to the folder you just made, sudo tar xzfv OpenJDK17U-jdk_arm_linux_hotspot_17.0.1_12.tar.gz -C /opt/jdk

wget https://github.com/adoptium/temurin17-binaries/releases/download/jdk-17.0.1%2B12/OpenJDK17U-jdk_arm_linux_hotspot_17.0.1_12.tar.gz tar xzfv OpenJDK17U-jdk_arm_linux_hotspot_17.0.1_12.tar.gz ./jdk-17.0.1+12/bin/java -version

wget -O jdk.tar.gz https://github.com/adoptium/temurin17-binaries/releases/download/jdk-17.0.1%2B12/OpenJDK17U-jdk_x64_linux_hotspot_17.0.1_12.tar.gz tar -xzf jdk.tar.gz -C jdk_home JAVA_HOME="$(pwd)/jdk_home" $JAVA_HOME/bin/java.exe -jar project.jar

Are they just bundling a JRE? At least from what I've seen in other flatpak manifests, many will just pull the latest binaries from adoptium (formerly adopt open jdk) (here)[https://github.com/adoptium/temurin8-binaries] and (here)[https://github.com/adoptium/temurin17-binaries]. I think you could also specify the runtime from flathub.

You can specify the runtime version, though. I think you meant the SDK version, no? Some SDKs have fixed versions (e.g. Node, Java), I don't know exactly why exactly Rust doesn't, but this does not affect reproducibility at all.

It does look like it may be possible to use multiple versions in a single flatpak, I see that it creates a version-specific link in the post-install. But I'm not 100% sure that relates to the install.sh you're supposed to call from your own flatpak app.