`rosdep keys` listing Ubuntu/Debian dependencies even when I specify `--os=arch:rolling`

[blacklightpy]

This happens even after running rosdep update with both --os=arch:rolling and setting ROS_OS_OVERRIDE as arch.

Output of rosdep keys --os=arch:rolling --from-paths src --ignore-src --rosdistro=iron:

libxi-dev
opencl-headers
gtest
python3-rospkg-modules
pugixml-dev
python3-pygraphviz
python3-dbus
libusb-1.0-dev
python3-pytest-timeout
libpaho-mqtt-dev
libxaw
openssl
spacenavd
subversion
libdraco-dev
libzmq3-dev
python3-zmq
python3-shapely
libfyaml-dev
docker.io
cargo
libqt5x11extras5-dev
python3-qt5-bindings
jupyter-notebook
opengl
cppcheck
libturbojpeg
libx11-dev
file
libdbus-dev
python3-websocket
libspnav-dev
libgps
tbb
libqt5-concurrent
libboost-thread
python3-protobuf
libusb-1.0
qt5-qmake
python3-autobahn
coinor-libclp-dev
pyqt5-dev-tools
libpaho-mqttpp-dev
python3-importlib-resources
libjsoncpp-dev
libqt5-widgets
libqt5-opengl-dev
libqt5-gui
liburdfdom-tools
libboost-python
python3
libcairo2-dev
socat
python3-flake8
python3-pip
libqt5-quick
python3-unidiff
python3-jsonschema
libclang-dev
libbluetooth-dev
curl
python3-opencv
unzip
ocl-icd-opencl-dev
libpng-dev
libfreenect-dev
git
wx-common
coinor-libcoinutils-dev
gurumdds-2.8
acl
benchmark
glut
graphviz
python3-collada
sdl2
libatomic
pybind11-dev
libqt5-websockets-dev
libboost-filesystem
libxrandr
gz-plugin
python3-vcstool
ignition-cmake2
libfreetype6
python3-argcomplete
coinor-libcbc-dev
libceres-dev
hdf5-tools
spirv-headers
geographiclib-tools
libboost-program-options
doxygen
bullet
libavdevice-dev
libtheora
libjpeg
dpkg
libqt5-svg
asio
gz-sim6
libsqlite3-dev
gazebo
clang
libncurses-dev
ignition-transport11
libtins-dev
dkms
pyflakes3
python3-fiona
python3-whichcraft
assimp
coinor-libcgl-dev
python3-empy
python3-cryptography
python3-pytest-mock
proj
python3-natsort
python3-sphinx
geos
sqlite3
liburdfdom-headers-dev
black
libopenblas-dev
libboost-dev
spdlog
libqt5-qml
libomp-dev
ffmpeg
geographiclib
python3-requests
libglfw3-dev
python3-rtree
python3-dev
libqglviewer2-qt5
libgstreamer1.0-dev
qtbase5-dev
libgdal-dev
bzip2
libxml2-utils
python3-netifaces
libboost-date-time-dev
libxml2
liborocos-kdl-dev
rti-connext-dds-6.0.1
libfreetype6-dev
ignition-fortress
yaml-cpp
libboost-system-dev
python3-rosdistro-modules
python3-pykdl
pydocstyle
python3-pandas
jq
libopen3d-dev
java
python3-importlib-metadata
python3-lttng
fmt
bison
python3-rospkg
python3-numpy
protobuf-dev
binutils
libboost-program-options-dev
python3-mock
spirv-tools
python3-uvloop
python3-babeltrace
lcov
libwebsocketpp-dev
python3-lxml
gazebo11
libdw-dev
iwyu
sdformat12
clang-format
libqglviewer-dev-qt5
cwiid-dev
python3-catkin-pkg
tango-icon-theme
lttng-tools
libabsl-dev
libopenscenegraph
libxmlrpc-c++
liburdfdom-dev
libv4l-dev
protobuf
python3-pkg-resources
libqhull
python3-bson
liblapack-dev
range-v3
libfcl-dev
uncrustify
suitesparse
python3-pyproj
python3-twisted
libvulkan-dev
python3-click
cmake
lz4
python3-venv
tinyxml
libopencv-dev
libpcap
wget
python3-git
libudev-dev
python3-mypy
libboost-iostreams-dev
udev
libboost-random
libqwt-qt5-dev
python3-smbus
coinor-libipopt-dev
nlohmann-json-dev
libflann-dev
clang-tidy
ignition-math6
libogg
ignition-plugin
libxmu-dev
ignition-fuel-tools7
libreadline
python3-tk
libyaml-dev
python3-ntplib
libxxf86vm
wxwidgets
xsimd
libgstreamer-plugins-base1.0-dev
libx11
libgoogle-glog-dev
eigen
python3-distro
ignition-gazebo6
libhdf5-dev
assimp-dev
python3-typeguard
zlib
xtensor
libbluetooth
python3-img2pdf
libopencv-imgproc-dev
boost
libglew-dev
python3-pyqt5.qtwebengine
graphicsmagick
python3-cairo
libgflags-dev
libboost-python-dev
libzstd-dev
libboost-random-dev
flex
libjsoncpp
libgazebo11-dev
python3-catkin-pkg-modules
python3-yaml
python3-pydot
google-mock
libopenni2-dev
yaml
libboost-date-time
python3-psutil
libssl-dev
ignition-msgs8
liblttng-ust-dev
python3-matplotlib
python3-packaging
python3-future
libpoco-dev
libboost-thread-dev
python3-lark-parser
qttools5-dev-tools
python3-construct
python3-pycodestyle
opende
libboost-filesystem-dev
libqt5-core
matio
libqt5-svg-dev
python3-jinja2
python3-pil
python3-serial
python3-setuptools
v4l-utils
gtk3
python3-pytest
python3-tornado
lua5.2-dev
cwiid
libconsole-bridge-dev
python3-scipy
tinyxml2
zbar
uuid
libyaml
pkg-config
libqt5-opengl
libccd-dev
libpcl-all-dev

[blacklightpy]

My bad.. these are the keys, not the packages themselves..