anchor.diff:    CAN_LEDS y
   
     # Wireless networking.
  -  CFG80211_WEXT? y # Without it, ipw2200 drivers don't build
  -  IPW2100_MONITOR? y # support promiscuous mode
  -  IPW2200_MONITOR? y # support promiscuous mode
  -  HOSTAP_FIRMWARE? y # Support downloading firmware images with Host AP driver
  -  HOSTAP_FIRMWARE_NVRAM? y
  +  CFG80211_WEXT y # Without it, ipw2200 drivers don't build
  +  IPW2100_MONITOR y # support promiscuous mode
  +  IPW2200_MONITOR y # support promiscuous mode
  +  HOSTAP_FIRMWARE y # Support downloading firmware images with Host AP driver
  +  HOSTAP_FIRMWARE_NVRAM y
     ATH9K_WOW y
     ATH9K_PCI y # Detect Atheros AR9xxx cards on PCI(e) bus
     ATH9K_AHB y # Ditto, AHB bus
  -  ${optionalString (versionAtLeast version "3.2") ''
  -    B43_PHY_HT? y
  -  ''}
  -  BCMA_HOST_PCI? y
  +  B43_PHY_HT y
  +  BCMA_HOST_PCI y
   
     # Enable various FB devices.
     FB y
  
positive.code:   FB_VESA y
    FRAMEBUFFER_CONSOLE y
    FRAMEBUFFER_CONSOLE_ROTATION y
    ${optionalString (versionOlder version "3.9" || stdenv.system == "i686-linux") ''
      FB_GEODE y
    ''}
  
    # Video configuration.
  
    # Allow specifying custom EDID on the kernel command line
    DRM_LOAD_EDID_FIRMWARE y
    ${optionalString (versionOlder version "3.9") ''
      DRM_RADEON_KMS? y
    ''}
    # Hybrid graphics support
    VGA_SWITCHEROO y
  
  
negative.code:   NUMA y
    NUMA_BALANCING y
  
    # Disable some expensive () features.
    PM_TRACE_RTC n
  
    # Enable various subsystems.
  