Build errors: nix (extra experimental features in use, etc)

[h8rt3rmin8r]

After installing the recommended 3rd party package manager nix (multi-user installation) and subsequently running the build command (nix build .), the following error was presented:

error: experimental Nix feature 'nix-command' is disabled; use '--extra-experimental-features nix-command' to override

Taking the error message into account, I tried a modified version of the initial build command to satisfy the nix-command requirement:

nix --extra-experimental-features nix-command build .

This modified build command then produced a second error message:

error: experimental Nix feature 'flakes' is disabled; use '--extra-experimental-features flakes' to override

In an attempt to satisfy the issues in this error, I then attempted a third build command to satisfy the flakes requirement:

nix --extra-experimental-features nix-command --extra-experimental-features flakes build .

This modified build command then produced yet another error message:

error: flake 'path:/home/h8rt3rmin8r/data/vive/VivePro2-Linux-Driver-master' does not provide attribute 'packages.x86_64-linux.default' or 'defaultPackage.x86_64-linux'

Perhaps these issues are coming from my use of Ubuntu instead of some other system. I'm not sure. Either way I am now at a bit of an impasse - the only alternative installation method referenced includes commands involving pacman (so intended for Arch-based systems). Is it therefore safe to assume this VivePro2-Linux-Driver repository does not currently support installation on Ubuntu? If so, support for Ubuntu would be very much appreciated as setting up a dual boot just to use my new Vive Pro 2 would be quite unfortunate (I've not used Windows in over 10 years now and I'd hate to re-enter the Matrix again lol).

For what it's worth, here's some system info:

$> neofetch --package_managers on --os_arch on --speed_type bios --cpu_speed on --refresh_rate on --gpu_brand on --gpu_type all
            .-/+oossssoo+/-.               h8rt3rmin8r@novx-core 
        `:+ssssssssssssssssss+:`           --------------------- 
      -+ssssssssssssssssssyyssss+-         OS: Ubuntu 20.04.4 LTS x86_64 
    .ossssssssssssssssssdMMMNysssso.       Shell: bash 5.0.17 
   /ssssssssssshdmmNNmmyNMMMMhssssss/      CPU: Intel i9-10920X (24) @ 4.800GHz 
  +ssssssssshmydMMMMMMMNddddyssssssss+     GPU: NVIDIA 65:00.0 NVIDIA Corporation Device 2203 
 /sssssssshNMMMyhhyyyyhmNMMMNhssssssss/    Memory: 6499MiB / 257435MiB (2%) 
.ssssssssdMMMNhsssssssssshNMMMdssssssss.   Packages: 3545 (dpkg), 47 (nix-default), 29 (snap) 
+sssshhhyNMMNyssssssssssssyNMMMysssssss+   Disk (/): 467G / 915G (54%) 
ossyNMMMNyMMhsssssssssssssshmmmhssssssso   Disk (hotwire): 131G / 19T (1%) 
ossyNMMMNyMMhsssssssssssssshmmmhssssssso   Disk (SG-10000-F): 4.6T / 9.1T (53%) 
+sssshhhyNMMNyssssssssssssyNMMMysssssss+   Disk (SG-10000-A): 6.6T / 9.1T (77%) 
.ssssssssdMMMNhsssssssssshNMMMdssssssss.
 /sssssssshNMMMyhhyyyyhdNMMMNhssssssss/
  +sssssssssdmydMMMMMMMMddddyssssssss+
   /ssssssssssshdmNNNNmyNMMMMhssssss/
    .ossssssssssssssssssdMMMNysssso.
      -+sssssssssssssssssyyyssss+-
        `:+ssssssssssssssssss+:`
            .-/+oossssoo+/-.

$> glxinfo -B
name of display: :0
display: :0  screen: 0
direct rendering: Yes
Memory info (GL_NVX_gpu_memory_info):
    Dedicated video memory: 24564 MB
    Total available memory: 24564 MB
    Currently available dedicated video memory: 23472 MB
OpenGL vendor string: NVIDIA Corporation
OpenGL renderer string: NVIDIA GeForce RTX 3090 Ti/PCIe/SSE2
OpenGL core profile version string: 4.6.0 NVIDIA 515.65.01
OpenGL core profile shading language version string: 4.60 NVIDIA
OpenGL core profile context flags: (none)
OpenGL core profile profile mask: core profile

OpenGL version string: 4.6.0 NVIDIA 515.65.01
OpenGL shading language version string: 4.60 NVIDIA
OpenGL context flags: (none)
OpenGL profile mask: (none)

OpenGL ES profile version string: OpenGL ES 3.2 NVIDIA 515.65.01
OpenGL ES profile shading language version string: OpenGL ES GLSL ES 3.20

[CertainLach]

Yes, --extra-experimental-features is required, unless you use an unstable nix branch. I should mention this in README.md (Edit: done)

Another error (does not provide attribute 'packages.x86_64-linux.default') is caused by a missing package name In .#driver-proxy-release the #driver-proxy-release part is not a comment (even if GitHub syntax highlighter highlights it that way), this is an attribute of the driver release package name (Edid: also added to readme)

So, the fixed command is:

nix --extra-experimental-features nix-command --extra-experimental-features flakes build .#driver-proxy-release

The built package will work on ubuntu, Patreon binary release is made with this command

[h8rt3rmin8r]

Perfect. Thank you for the information. Especially the bit about the .#driver-proxy-release not being a comment. My brain lives in the world of bash a lot so when I saw the hash symbol in there I instantly thought that was a comment so it was very helpful when you cleared that up for me.

Initial results seem to be working. The build process is taking a long time to complete though. Probably normal.