diff --git a/setup/modules/core-packages.sh b/setup/modules/core-packages.sh
index 243ee50..96cfada 100644
--- a/setup/modules/core-packages.sh
+++ b/setup/modules/core-packages.sh
@@ -119,6 +119,13 @@ CORE_PACKAGES=(
     parted                # Disk partitioning tool — used by arch-autoinstall.sh
     pciutils              # lspci — list PCI devices (needed for GPU detection)
     pipewire              # Modern audio/video server (replaces PulseAudio + JACK)
+    # Install the PipeWire JACK/Pulse/ALSA shims explicitly so PipeWire is the
+    # chosen provider for the virtual `jack`/`pulse` packages. Otherwise a
+    # jack-dependent package here (e.g. ffmpeg) makes pacman pick jack2 by default,
+    # which later conflicts with the DE modules' pipewire-jack and aborts them.
+    pipewire-jack         # JACK API provided by PipeWire (conflicts with jack2)
+    pipewire-pulse        # PulseAudio server replacement via PipeWire
+    pipewire-alsa         # ALSA → PipeWire routing (config, no conflicting daemon)
 
     # ── Programming languages ────────────────────────────────────────────────
     python                # Python 3 interpreter