The dlib Python package does not respect cudaSupport from the given dlib library derivation

[hacker1024]

Describe the bug

The Dlib Python package sets build flags in a different way to the library.

It does not add the flag to enable CUDA support, even if the library derivation has been configured to do so.

Steps To Reproduce

Steps to reproduce the behavior:

1. Build python3Packages.dlib
2. Note that dlib.DLIB_USE_CUDA is false, even though the dlib derivation has CUDA enabled

Expected behavior

The CUDA setting should be preserved.

Additional context

The way that python3Packages.dlib inherits values from dlib is very problematic in general. Notably, the link to the derivation source code from search.nixos.org goes to the wrong place.

Notify maintainers

@Ma27 @christopherpoole

Metadata

Please run nix-shell -p nix-info --run "nix-info -m" and paste the result.

[user@system:~]$ nix-shell -p nix-info --run "nix-info -m"
 - system: `"aarch64-linux"`
 - host os: `Linux 5.10.104-tegra, Ubuntu, 20.04.6 LTS (Focal Fossa), nobuild`
 - multi-user?: `yes`
 - sandbox: `yes`
 - version: `nix-env (Nix) 2.16.1`
 - channels(root): `"jetpack, nixpkgs"`
 - nixpkgs: `/nix/var/nix/profiles/per-user/root/channels/nixpkgs`

[RobbieBuxton]

This should be closed now as a PR to fix this has been merged #279927

[hacker1024]

#279927 does not fix the Python package. See the Python changes in #273665.

[RobbieBuxton]

#279927 does not fix the Python package. See the Python changes in #273665.

Ah does it not? Annoying, I was just testing for c++, hoped the fix would propagate through.