In reply to @aidalgol:matrix.org
Has anyone successfully built blender on unstable with CUDA support enabled recently?

In reply to @ss:someonex.net
Note there was recently somebody in nix-gl-host issues advertising their Rust rewrite

In reply to @zimbatm:numtide.com
Did you take a look at https://github.com/NVIDIA/nvidia-container-toolkit already? I think they are battling with similar issues, plus sandboxing on top. It seems like they are using ld.so.cache as a loading mechanism instead of the LD_* env var and that might be more robust?

In reply to @zimbatm:numtide.com
looks like it's broken since end of October: https://hydra.nix-community.org/build/1720981

In file included from /build/source/intern/cycles/scene/image_vdb.cpp:5:
/build/source/intern/cycles/scene/../scene/image_vdb.h:12:12: fatal error: nanovdb/util/GridHandle.h: No such file or directory
   12 | #  include <nanovdb/util/GridHandle.h>
      |            ^~~~~~~~~~~~~~~~~~~~~~~~~~~
compilation terminated.
make[2]: *** [intern/cycles/scene/CMakeFiles/cycles_scene.dir/build.make:328: intern/cycles/scene/CMakeFiles/cycles_scene.dir/image_vdb.cpp.o] Error 1
make[2]: *** Waiting for unfinished jobs....
[ 56%] Building CXX object source/blender/makesrna/intern/CMakeFiles/bf_rna.dir/rna_access_compare_override.cc.o
In file included from /build/source/intern/cycles/scene/image.cpp:9:
/build/source/intern/cycles/scene/../scene/image_vdb.h:12:12: fatal error: nanovdb/util/GridHandle.h: No such file or directory
   12 | #  include <nanovdb/util/GridHandle.h>
      |            ^~~~~~~~~~~~~~~~~~~~~~~~~~~

Well here's the first offender

Pointed out to me today by a coworker:

[connorbaker@nixos-desktop:~]$ nix eval nixpkgs#path --apply '(path: path)'
/nix/store/xnjw9gmfmpppdj6bxpw6cfkspc3h6xwl-source

[connorbaker@nixos-desktop:~]$ nix eval nixpkgs#path --apply '(path: "${path}")'
"/nix/store/6hqgw3kmvcv4glqqs64idkwvp7zx0c11-xnjw9gmfmpppdj6bxpw6cfkspc3h6xwl-source"

:(

(yes, it copies the entirety of nixpkgs from one path in the store to another path in the store)

Pointed out to me today by a coworker:

[connorbaker@nixos-desktop:~]$ nix eval nixpkgs#path --apply '(path: path)'
/nix/store/xnjw9gmfmpppdj6bxpw6cfkspc3h6xwl-source

[connorbaker@nixos-desktop:~]$ nix eval nixpkgs#path --apply '(path: "${path}")'
"/nix/store/6hqgw3kmvcv4glqqs64idkwvp7zx0c11-xnjw9gmfmpppdj6bxpw6cfkspc3h6xwl-source"

:(

(yes, it copies the entirety of nixpkgs from one path in the store to another path in the store)

Pointed out to me today by a coworker:

[connorbaker@nixos-desktop:~]$ nix eval nixpkgs#path --apply '(path: path)'
/nix/store/xnjw9gmfmpppdj6bxpw6cfkspc3h6xwl-source

[connorbaker@nixos-desktop:~]$ nix eval nixpkgs#path --apply '(path: "${path}")'
"/nix/store/6hqgw3kmvcv4glqqs64idkwvp7zx0c11-xnjw9gmfmpppdj6bxpw6cfkspc3h6xwl-source"

:(

(yes, it copies the entirety of nixpkgs from one path in the store to another path in the store)

Pointed out to me today by a coworker:

[connorbaker@nixos-desktop:~]$ nix eval nixpkgs#path --apply '(path: path)'
/nix/store/xnjw9gmfmpppdj6bxpw6cfkspc3h6xwl-source

[connorbaker@nixos-desktop:~]$ nix eval nixpkgs#path --apply '(path: "${path}")'
"/nix/store/6hqgw3kmvcv4glqqs64idkwvp7zx0c11-xnjw9gmfmpppdj6bxpw6cfkspc3h6xwl-source"

>:(

(yes, it copies the entirety of nixpkgs from one path in the store to another path in the store)

A string interpolates to itself.

A path in an interpolated expression is first copied into the Nix store, and the resulting string is the [store path] of the newly created store object .

https://github.com/NixOS/nix/blob/723fdeb4f1bd7fad7c3b00603067d23c314b25c5/doc/manual/source/language/string-interpolation.md?plain=1#L153-L155