openjdk-8-jre-headless symlinks point to wrong files. about apt-buildpack HOT 2 CLOSED

Hi @zukuzu, sorry for taking a long time to respond!

I decided to take a crack at this today. First, to set expectations correctly: this is an experimental buildpack and therefore please do not expect quick support. The buildpack is also designed to work for just simple packages, as the behavior of apt is not that easy to reliably deal with all cases. We try our best effort to support it, but a lower priority compared to other buildpacks.

The reason that this buildpack uses a non-standard etc dir like /home/vcap/deps/0/apt is because the buildpack does not have the privilege to run as root (a requirement for apt-install). It mocks this by extracting the archive to this location and setting up common env variables. Hence the reasoning that it doesn't work for just simple packages.

As far as this app is concerned, you will have to try doing the missing steps for this package yourself.
I was able to get java just working by setting JAVA_HOME=/home/vcap/deps/0/apt/usr/lib/jvm/java-8-openjdk-amd64 and adding $JAVA_HOME/bin in the container. Now to get those symlinks working, you will have similarly rewire those symlinks yourself. You can utilize the .profile script to do the necessary changes. Unfortunately, supporting this package out-of-box wouldn't be in the scope of this buildpack.

Doing a little web search, I found a very similar issue addressed at GSA/data.gov#2917 (comment). Please take a look. I'm not very unfamiliar with the java domain, but please checkout if you can utilize the Java buildpack for your use case.

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I'm closing this issue. Please reopen if you like to continue the conversation

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