Railway•2y ago

How to exclude a default nixpack package from the build?

I'm trying to deploy a Spring Boot application which uses JDK11. Railway incorrectly detected JDK8, causing the build to fail. I added NIXPACKS_PKGS=jdk11, which added jdk11 to the build setup, but didn't remove jdk8 This means that the build is now failing due to this collision error:

error: collision between `/nix/store/hm60khc9q9lgajyl4y3ddsvh7k9qxflb-openjdk-8u322-ga/lib/openjdk/lib/jexec' and `/nix/store/mcawqibgxc0yl4h4b7g9cjnlrwmqwwdz-openjdk-11.0.15+10/lib/openjdk/lib/jexec'

error: collision between `/nix/store/hm60khc9q9lgajyl4y3ddsvh7k9qxflb-openjdk-8u322-ga/lib/openjdk/lib/jexec' and `/nix/store/mcawqibgxc0yl4h4b7g9cjnlrwmqwwdz-openjdk-11.0.15+10/lib/openjdk/lib/jexec'

How can I remove JDK8 from the build setup? Or is there a better way of defining the JDK version?

8 Replies

Percy•2y ago

Project ID: 51267194-e20e-4c89-9270-89caaecaa531

Percy•2y ago

You can remove JDK8 from the build setup by setting the NIXPACKS_PKGS environment variable to jdk11 instead of jdk. This will ensure that only JDK11 is used in the build setup.

⚠️ experimental feature

snöwOP•2y ago

51267194-e20e-4c89-9270-89caaecaa531 push @Angelo or anyone else?

angelo•2y ago

Oh this is interesting, tagging in @coffeecup

jr•2y ago

You can now customize the JDK version that gets installed with the NIXPACKS_JDK_VERSION environment variable. In your case you can set it to 11. This should override the automatically provided one and prevent any collisions https://nixpacks.com/docs/providers/java

Java | Nixpacks

App source + Nix packages + Docker = Image

Unknown User•2y ago

Message Not Public

Adam•2y ago

Enter the variable mentioned in jr’s message above in the environments variable tab in your service on Railway

Unknown User•2y ago

Message Not Public

Gaming

Programming

How to exclude a default nixpack package from the build?