Hi @ck3d, your changes in #32049 were undone in 6a4cc35. Could you please do another PR, or change this one? Thanks!

Thanks, I updated this PR.

Thanks @ck3d, I tested this with a TBS6981 (with the cx23885 chip) but no /dev/dvb devices are created. I tried configuring the firmware too, but I don't see any mention of it getting loaded in dmesg. Any idea what's going on?

I updated the PR and added a missing entry in all-packages.nix. It got lost after the last update.

Sorry, but I can not test the packages any more. My DVB card seems to be broken. My system do not recognize the card any more.

@ck3d I found that there's a conflict between the kernel module for dvb-core (dvb-core.ko.cz) and the one contained in this package (dvb-core.ko). The kernel version gets loaded, which is missing the dvb_create_media_graph symbol. I'm testing if xz compressing dvb-core.ko will be enough to fix this.

It's working for me (/dev/dvb is created) after adding:

  postInstall = ''
    xz $out/lib/modules/${kernel.modDirVersion}/kernel/drivers/media/dvb-core/dvb-core.ko
    xz $out/lib/modules/${kernel.modDirVersion}/kernel/drivers/media/v4l2-core/videodev.ko
  '';

I'll do some more testing and tidy up some other changes I've made. I must also see if there's a nicer way to add the firmware. Currently I've copied it to /lib/firmware and used the following in my config:

 hardware.firmware = [ 
    (pkgs.stdenv.mkDerivation {
     name = "firmwares";
     src = /lib/firmware;
     phases = [ "installPhase" ];
     installPhase = ''
     mkdir -p $out/lib/firmware
     cp -r $src/* $out/lib/firmware/
     '';
     })
 ];