[fullmetalsheep]

Summary

Hello,

Current installPhase logic moves .embd files from bin/embd_res to bin/. However, koboldcpp still looks up bin/embd_res for .embd files. This disparity causes a runtime error (see below). This PR fixes it by preserving bin/embd_res folder structure.

I've built and tested this after with Steps to reproduce below, and koboldcpp embd lookup works.

Hope this helps,
Cheers!

Steps to reproduce (how I came across the issue)

1. Download starter pack config - originally mentioned in the koboldcpp wiki
2. Run koboldcpp --config ~/Downloads/starter-pack-v2.kcppt
3. Following error should occur

libc++abi: terminating due to uncaught exception of type std::runtime_error: 
Failed to open file: /nix/store/...-koboldcpp-1.110/bin/embd_res/qwen2_merges_utf8_c_str.embd

Things done

• Built on platform:
  • x86_64-linux
  • aarch64-linux
  • aarch64-darwin
• Tested, as applicable:
  • NixOS tests in nixos/tests.
  • Package tests at passthru.tests.
  • Tests in lib/tests or pkgs/test for functions and "core" functionality.
• Ran nixpkgs-review on this PR. See nixpkgs-review usage.
• Tested basic functionality of all binary files, usually in ./result/bin/.
• Nixpkgs Release Notes
  • Package update: when the change is major or breaking.
• NixOS Release Notes
  • Module addition: when adding a new NixOS module.
  • Module update: when the change is significant.
• Fits CONTRIBUTING.md, pkgs/README.md, maintainers/README.md and other READMEs.
• Follows the automation/AI policy.

[4evy]

There's #537338 already that does basically the same and more, but I don't mind this PR getting merged and rebasing on top of it either way

[fullmetalsheep]

There's #537338 already that does basically the same and more, but I don't mind this PR getting merged and rebasing on top of it either way

I would prefer the rebase option since it takes away the pressure from your PRs' other changes?

(on a purely selfish note, It'll also allow me to remove the local nix overlay I'm using to fix the issue - a bit faster 😆)

Thanks!