ucx: Add cuda_nvcc to buildDeps if building with cuda.

[sliedes]

This is necessitated by the change made in #457424.

Things done

• Built on platform:
  • x86_64-linux
  • aarch64-linux
  • x86_64-darwin
  • 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.

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[sliedes]

nixpkgs-review result

Generated using nixpkgs-review.

Command: nixpkgs-review pr 459164
Commit: f8e94b87828a5874fa1f0be9f33df6cf3c3a9df7

[sliedes]

nixpkgs-review result

Generated using nixpkgs-review.

Command: nixpkgs-review pr 459164 --extra-nixpkgs-config '{ allowUnfree = true; cudaSupport = true; }' --package ucc
Commit: f8e94b87828a5874fa1f0be9f33df6cf3c3a9df7

---

x86_64-linux

✅ 2 packages built:

• ucc
• ucc.dev (ucc.dev.dev)

[ConnorBaker]

Instead of adding it to buildInputs, would you mind changing the line in configureFlags to

++ lib.optionals enableCuda [ "--with-cuda=${cudaPackages.cuda_nvcc}" ]

other than that, looks good!

[sliedes]

Instead of adding it to buildInputs, would you mind changing the line in configureFlags to

++ lib.optionals enableCuda [ "--with-cuda=${cudaPackages.cuda_nvcc}" ]

other than that, looks good!

I also removed it from nativeBuildInputs. Maybe that's correct? :P

[sliedes]

nixpkgs-review result

Generated using nixpkgs-review.

Command: nixpkgs-review pr 459164 --extra-nixpkgs-config '{ allowUnfree = true; cudaSupport = true; }' --package ucx
Commit: 83cb192d8ff248930dc5666067403f9c9ee1d80d

---

x86_64-linux

✅ 3 packages built:

• ucx
• ucx.dev (ucx.dev.dev, ucx.dev.doc)
• ucx.doc (ucx.doc.dev, ucx.doc.doc)

[sliedes]

Also trying to run nixpkgs-review pr 459164 --extra-nixpkgs-config '{ allowUnfree = true; cudaSupport = true; }', but that somehow tries to build cuda12.8-cuda_compat-12.8.39468522, which fails because this is x86:

┃ error: Cannot build '/nix/store/r7sgq2qvkhc89dfhnf6ak5kp2cbirzkm-cuda12.8-cuda_compat-12.8.39468522.drv'.
┃        Reason: builder failed with exit code 1.
┃        Output paths:
┃          /nix/store/6lnv84qhzjsdyiqli7wdw5a6v5fl108d-cuda12.8-cuda_compat-12.8.39468522
┃        Last 15 log lines:
┃        > structuredAttrs is enabled
┃        > source: sourcing buildRedistHook.bash (hostOffset=-1) (targetOffset=0)
┃        > buildRedistHookRegistration: added unpackCudaLibSubdir to postUnpackHooks
┃        > buildRedistHookRegistration: added unpackCudaPkgConfigDirs to postUnpackHooks
┃        > buildRedistHookRegistration: added patchCudaPkgConfig to prePatchHooks
┃        > buildRedistHookRegistration: added checkCudaFhsRefs to postInstallCheckHooks
┃        > buildRedistHookRegistration: added checkCudaNonEmptyOutputs to postInstallCheckHooks
┃        > buildRedistHookRegistration: added fixupPropagatedBuildOutputsForMultipleOutputs to preFixupHooks
┃        > buildRedistHookRegistration: added fixupCudaPropagatedBuildOutputsToOut to postFixupHooks
┃        > Sourcing auto-add-driver-runpath-hook
┃        > Using autoAddDriverRunpath
┃        > Sourcing fix-elf-files.sh
┃        > Sourcing mark-for-cudatoolkit-root-hook
┃        > Running phase: unpackPhase
┃        > variable $src or $srcs should point to the source
┃        For full logs, run:
┃          nix log /nix/store/r7sgq2qvkhc89dfhnf6ak5kp2cbirzkm-cuda12.8-cuda_compat-12.8.39468522.drv

[sliedes]

Also, why did this happen? Was it somehow triggered by my force push? 🤯

@nixpkgs-ci nixpkgs-ci bot removed the 6.topic: cuda label 14 minutes ago

[ConnorBaker]

Superceded by #459164.