[Nix-dev] no hardware rendering

[Berno Strik]

I was checking my Xorg log and found this:

[    39.626] (II) intel(0): SNA initialized with Almador (gen2) backend
[    39.626] (==) intel(0): Backing store enabled
[    39.626] (==) intel(0): Silken mouse enabled
[    39.647] (II) intel(0): HW Cursor enabled
[    39.647] (II) intel(0): RandR 1.2 enabled, ignore the following
[    39.648] (II) intel(0): Textured video not supported on this
[    39.707] (II) intel(0): [DRI2]   DRI driver: i915
[    39.707] (II) intel(0): [DRI2]   VDPAU driver: i915
[    39.707] (II) intel(0): direct rendering: DRI2 DRI3 enabled
[    39.707] (II) intel(0): hardware support for Present enabled
[    39.707] (==) intel(0): display hotplug detection enabled
[    39.707] (--) RandR disabled
[    39.989] (EE) AIGLX error: Calling driver entry point failed
[    39.997] (EE) AIGLX: reverting to software rendering
[    40.364] (II) AIGLX: Loaded and initialized swrast
[    40.364] (II) GLX: Initialized DRISWRAST GL provider for screen 0

In my session log :

libGL error: failed to create dri screen
libGL error: failed to load driver: i915

Standard configuration options for X in configuration.nix.

lspci:

00:02.0 VGA compatible controller: Intel Corporation 82865G Integrated
Graphics Controller (rev 02)

Can someone explain why I'm not getting normal hardware support for my
graphic card?