i think i don't need to use a flake, i'm going to focus on working with nix-shell and ensuring LD_LIBRARY_PATH is path.

of course! i'm working on a codebase that is written in Java, and that requires me to install JVM and gradle as you know. But this project when running needs to dynamically load a libGL library. However when it does it can't seem to locate it. I believe that if LD_LIBRARY_PATH is set, it should be able to find it

nix-ld seems to be a way to draw in from external libraries for compiling a package? I need to spend more time wrapping my head around it

ahh thank you for that! hmm

i don't think i'm building inside of nix, i'm using the command line tools for running gradle inside of the project repository which i think is part of why it's not finding everything

ahh i see. okay! i'm going to do that. thanks!

:)

because of course you just end up with a .jar and some shell scripts around it…

Well that's for making a Nix package or deploying, right? If softmoonworld is (perhaps initially) only interested in development, there should be a way to add it via Gradle. My hacky solution added the library via nix profile install, thus:

test {
        useJUnitPlatform()
        def userHome = System.getProperty("user.home")
        systemProperty "java.library.path", findProperty("javaPath") ?: "${userHome}/.nix-profile/lib"
    }

because of course you just end up with a .jar and some shell scripts around it…

Well that's for making a Nix package or deploying, right? If softmoonworld is (perhaps initially) only interested in development, there should be a way to add it via Gradle. My hacky solution added the library via nix profile install, thus:

test {
        useJUnitPlatform()
        def userHome = System.getProperty("user.home")
        systemProperty "java.library.path", findProperty("javaPath") ?: "${userHome}/.nix-profile/lib"
}

My hacky GitLab CI build is like this:

# Build on NixOS using the devshell from `flake.nix` and secp256k1 installed via `nix profile install`
nixos-devshell:
  image: nixos/nix:latest
  variables:
    NIXPKGS_URL: "github:NixOS/nixpkgs/nixos-unstable"
  before_script:
    # Configure Nix to use a binary cache and enable experimental features
    - nix-env -iA nixpkgs.cachix
    - cachix use nix-community
    - echo "experimental-features = nix-command flakes" >> /etc/nix/nix.conf
    - nix profile install nixpkgs#secp256k1
  script:
    - nix develop .#minimum -c gradle build run runEcdsa
  cache:
    key: "${CI_COMMIT_REF_SLUG}"
    paths:
      - /nix/store
      - ~/.gradle/