Problem building vlc

I'm trying to build vlc. So I did this: $ sudo apt build-dep vlc Reading package lists... Done Reading package lists... Done Building dependency tree... Done Reading state information... Done Some packages could not be installed. This may mean that you have requested an impossible situation or if you are using the unstable distribution that some required packages have not yet been created or been moved out of Incoming. The following information may help to resolve the situation: The following packages have unmet dependencies: libsystemd-dev : Depends: libsystemd0 (= 252.33-1~deb12u1) E: Unable to correct problems, you have held broken packages. Ok, fair enough. So I wanted to investigate what broken packages I have. I found this page https://askubuntu.com/q/772653/965510 with various commands to list broken packages. I tried all of them, but got no information at all. I have also tried aptitude, but it said: Unable to satisfy the build-depends: Build-Depends: debhelper-compat (= 13) Unable to apply some actions, aborting My sources.list is here:

#deb cdrom:[Debian GNU/Linux 12.5.0 _Bookworm_ - Official amd64 NETINST with firmware 20240210-11:27]/ bookworm contrib main non-free-firmware

deb http://deb.debian.org/debian/  bookworm main contrib non-free-firmware
deb-src http://deb.debian.org/debian/  bookworm main contrib non-free-firmware

deb http://deb.debian.org/debian/  bookworm-proposed-updates  main contrib non-free-firmware
deb-src http://deb.debian.org/debian/  bookworm-proposed-updates  main contrib non-free-firmware

deb http://deb.debian.org/debian/  bookworm-backports  main contrib non-free-firmware
deb-src http://deb.debian.org/debian/  bookworm-backports  main contrib non-free-firmware

deb http://security.debian.org/debian-security  bookworm-security main non-free-firmware
deb-src http://security.debian.org/debian-security  bookworm-security main non-free-firmware

# bookworm-updates, to get updates before a point release is made;
# see https://www.debian.org/doc/manuals/debian-reference/ch02.en.html#_updates_and_backports 
deb http://deb.debian.org/debian/  bookworm-updates main non-free-firmware
deb-src http://deb.debian.org/debian/  bookworm-updates main non-free-firmware

deb [ arch=amd64,arm64 ] https://www.ui.com/downloads/unifi/debian  stable ubiquiti
deb [signed-by=/usr/share/keyrings/brave-browser-archive-keyring.gpg] https://brave-browser-apt-release.s3.brave.com/  stable main
deb [signed-by=/etc/apt/keyrings/lutris.gpg] https://download.opensuse.org/repositories/home:/strycore/Debian_12/  ./
deb [ signed-by=/usr/share/keyrings/mongodb-server-7.0.gpg ] http://repo.mongodb.org/apt/debian  bookworm/mongodb-org/7.0 main
deb [signed-by=/usr/share/keyrings/mullvad-keyring.asc arch=amd64] https://repository.mullvad.net/deb/stable  bookworm main
deb [arch=amd64 signed-by=/usr/share/keyrings/signal-desktop-keyring.gpg] https://updates.signal.org/desktop/apt  xenial main
# Uncomment these lines to try the beta version of the Steam launcher
#deb [arch=amd64,i386 signed-by=/usr/share/keyrings/steam.gpg] https://repo.steampowered.com/steam/  beta steam
#deb-src [arch=amd64,i386 signed-by=/usr/share/keyrings/steam.gpg] https://repo.steampowered.com/steam/  beta steam
# deb [arch=amd64,i386 signed-by=/usr/share/keyrings/steam.gpg] http://repo.steampowered.com/steam/  stable steam
deb [arch=amd64,i386 signed-by=/usr/share/keyrings/steam.gpg] https://repo.steampowered.com/steam/  stable steam
deb-src [arch=amd64,i386 signed-by=/usr/share/keyrings/steam.gpg] https://repo.steampowered.com/steam/  stable steam
deb [signed-by=/usr/share/keyrings/winehq.gpg] http://dl.winehq.org/wine-builds/debian/  bookworm main

How can I continue from here?