droidcam.nix

droidcam.nix

{ stdenv, fetchzip, pkgconfig, ffmpeg, gtk2-x11, libjpeg }:

stdenv.mkDerivation rec {
  pname = "droidcam";
  version = "0";

  src = fetchzip {
    url = "https://github.com/aramg/droidcam/archive/b49842a02611f8ddc6b9342ef74e299abd1c4090.zip";
    sha256 = "05kd5ihwb3fldmalv67jgpw4x0z0q39lfis69r7yh03qiqlviymk";
  };

  sourceRoot = "source/linux";

  buildInputs = [ pkgconfig ];
  nativeBuildInputs = [ ffmpeg gtk2-x11 libjpeg ];

  postPatch = ''
    sed -i -e 's:/opt/libjpeg-turbo/include:${libjpeg.out}/include:' Makefile
    sed -i -e 's:/opt/libjpeg-turbo/lib`getconf LONG_BIT`/libturbojpeg.a:${libjpeg.out}/lib/libturbojpeg.so:' Makefile
  '';

  installPhase = ''
    mkdir -p $out/bin
    cp droidcam droidcam-cli $out/bin/
  '';

  meta = with stdenv.lib; {
    description = "DroidCam Linux client";
    homepage = https://github.com/aramg/droidcam;
  };
}

v4l2loopback-dc.nix

{ stdenv, fetchzip, kernel }:

stdenv.mkDerivation rec {
  pname = "v4l2loopback-dc";
  version = "0";

  src = fetchzip {
    url = "https://github.com/aramg/droidcam/archive/b49842a02611f8ddc6b9342ef74e299abd1c4090.zip";
    sha256 = "05kd5ihwb3fldmalv67jgpw4x0z0q39lfis69r7yh03qiqlviymk";
  };

  sourceRoot = "source/linux/v4l2loopback";

  KVER = "${kernel.modDirVersion}";
  KBUILD_DIR = "${kernel.dev}/lib/modules/${kernel.modDirVersion}/build";

  nativeBuildInputs = kernel.moduleBuildDependencies;

  postPatch = ''
    sed -i -e 's:/lib/modules/`uname -r`/build:${KBUILD_DIR}:g' Makefile
  '';

  installPhase = ''
    mkdir -p $out/lib/modules/${KVER}/kernels/media/video
    cp v4l2loopback-dc.ko $out/lib/modules/${KVER}/kernels/media/video/
  '';

  meta = with stdenv.lib; {
    description = "DroidCam kernel module v4l2loopback-dc";
    homepage = https://github.com/aramg/droidcam;
  };
}

zzz-README.md

configuration.nix:

let v4l2loopback-dc = pkgs.callPackage ./v4l2loopback-dc.nix {
      kernel = pkgs.linux_4_19;
    };
    droidcam = pkgs.callPackage ./droidcam.nix {};
in {
  boot.kernelPackages = pkgs.linuxPackages_4_19;
  boot.extraModulePackages = [ v4l2loopback-dc ];
  environment.systemPackages = [ droidcam ];
}

README.md is all. Paste your configuration.nix.

I updated this driver to the Linux kernel 5.4 and added support for Droidcam 1.7.2 in case you'd like the latest version (at this time of writing).
Thanks for your's, it saved me a lot of time!

https://gist.github.com/peterwilli/b61da8e2ddafe010f7178553135dc3d3