Add custom packages

pkgs/rpicam-apps/package.nix

@@ -0,0 +1,58 @@
+{ stdenv
+, fetchFromGitHub
+, meson
+, ninja
+, pkg-config
+, boost
+, ffmpeg
+, libcamera
+, libdrm
+, libexif
+, libjpeg
+, libpng
+, libtiff
+, lib
+}:
+
+stdenv.mkDerivation (finalAttrs: {
+  pname = "rpicam-apps";
+  version = "1.4.1";
+
+  src = fetchFromGitHub {
+    owner = "raspberrypi";
+    repo = "rpicam-apps";
+    rev = "v" + finalAttrs.version;
+    hash = "sha256-3NG2ZE/Ub3lTbfne0LCXuDgLGTPaAAADRdElEbZwvls=";
+  };
+
+  nativeBuildInputs = [
+    meson
+    ninja
+    pkg-config
+  ];
+
+  buildInputs = [
+    boost
+    ffmpeg
+    libcamera
+    libdrm
+    libexif
+    libjpeg
+    libpng
+    libtiff
+  ];
+
+  # Meson is no longer able to pick up Boost automatically:
+  # https://github.com/NixOS/nixpkgs/issues/86131
+  BOOST_INCLUDEDIR = "${lib.getDev boost}/include";
+  BOOST_LIBRARYDIR = "${lib.getLib boost}/lib";
+
+  meta = with lib; {
+    description = ''
+      libcamera-based applications to drive the cameras on a Raspberry Pi platform
+    '';
+    homepage = "https://github.com/raspberrypi/rpicam-apps";
+    license = licenses.bsd2;
+  };
+})
+