# Getting an error, has anything regarding OpenGL in nixpkgs?
**URL:** https://discourse.nixos.org/t/getting-an-error-has-anything-regarding-opengl-in-nixpkgs/3641
**Category:** Uncategorized
**Created:** [August 7, 2019, 6:47am UTC](https://discourse.nixos.org/t/getting-an-error-has-anything-regarding-opengl-in-nixpkgs/3641 "2019-08-07T06:47:30Z")
**Posts on this page:** 6
**Page:** 1
### Author:  [@pimiddy](https://discourse.nixos.org/u/pimiddy)
#### Post date: [August 7, 2019, 6:47am UTC](https://discourse.nixos.org/t/getting-an-error-has-anything-regarding-opengl-in-nixpkgs/3641/1 "2019-08-07T06:47:30Z")
Since updating yesterday, I cannot start my OpenGL application anymore. GL initialization seems to fail, although I cannot get an error message just yet, so I’m asking very generally: Has anything changed in regard to OpenGL library handling in nixpkgs? I’m noticing that `LD_LIBRARY_PATH` seems a bit smaller now.
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### Author:  [@vcunat](https://discourse.nixos.org/u/vcunat)
#### Post date: [August 7, 2019, 10:21am UTC](https://discourse.nixos.org/t/getting-an-error-has-anything-regarding-opengl-in-nixpkgs/3641/2 "2019-08-07T10:21:38Z")
IIRC some older nixpkgs builds might stop finding GL libs without LD\_LIBRARY\_PATH. Relatively recent builds should be OK.
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### Author:  [@matthewbauer](https://discourse.nixos.org/u/matthewbauer)
#### Post date: [August 8, 2019, 2:59pm UTC](https://discourse.nixos.org/t/getting-an-error-has-anything-regarding-opengl-in-nixpkgs/3641/3 "2019-08-08T14:59:09Z")
Hmmm… perhaps we got rid of the LD\_LIBRARY\_PATH paths a little bit too early. It will mean you can’t use pre-19.09 GL apps on NixOS 19.09. It’s not too hard to get into this situation if you utilize pinning in your projects. I would propose making hardware.opengl.setLdLibraryPath true for 19.09 and maybe planning to change the default to false for 20.03.
There is an option you can set manually:
>
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### Author:  [@vcunat](https://discourse.nixos.org/u/vcunat)
#### Post date: [August 9, 2019, 1:53pm UTC](https://discourse.nixos.org/t/getting-an-error-has-anything-regarding-opengl-in-nixpkgs/3641/4 "2019-08-09T13:53:18Z")
I _thought_ the nixpkgs had to be much older for GL to break, somewhere when we switched to linking against libglvnd stubs – and only the OS-level stuff like drivers needed the later work. (@ambrop72 might remember but apparently isn’t on this forum)
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### Author:  [@worldofpeace](https://discourse.nixos.org/u/worldofpeace)
#### Post date: [September 15, 2019, 9:49pm UTC](https://discourse.nixos.org/t/getting-an-error-has-anything-regarding-opengl-in-nixpkgs/3641/5 "2019-09-15T21:49:32Z")
Just a heads up to users on unstable where this is still disabled, you can use the following:
```auto
hardware.opengl.setLdLibraryPath = true;
```
to get the old behavior.
If you plan to use the upcoming 19.09 release the change has been reverted there, so the aforementioned should be unneeded.
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### Author:  [@NilsIrl](https://discourse.nixos.org/u/NilsIrl)
#### Post date: [October 19, 2019, 4:04pm UTC](https://discourse.nixos.org/t/getting-an-error-has-anything-regarding-opengl-in-nixpkgs/3641/6 "2019-10-19T16:04:57Z")
I seem to have this problem on 19.09