diff --git a/customize.sh b/customize.sh
index f0bc12a..2cbab45 100755
--- a/customize.sh
+++ b/customize.sh
@@ -1,6 +1,22 @@
 #!/bin/sh
 # vim: set sw=4 ts=4 sts=4 et :
 
+. "${CONFIGDIR:=${PWD}}"/config
+
+O=$1
+
+emerge --root=/mnt/gentoo --config-root="${O}"/portage \
+    -kvnuUDj \
+    --rebuilt-binaries=y \
+    --onlydeps \
+    www-client/firefox
+
+set -x
+
+command -v clang
+command -v "${target}"-clang
+command -v "${target}"-clang-19
+
 passwd -R /mnt/gentoo -d root
 
 systemctl --root=/mnt/gentoo enable wpa_supplicant@wlan0
diff --git a/install.packages b/install.packages
index 5c67a29..31638b0 100644
--- a/install.packages
+++ b/install.packages
@@ -1,2 +1 @@
 net-wireless/wpa_supplicant
-www-client/firefox
diff --git a/portage/package.use/firefox b/portage/package.use/firefox
index a07789a..3580b88 100644
--- a/portage/package.use/firefox
+++ b/portage/package.use/firefox
@@ -2,5 +2,5 @@ media-libs/harfbuzz -cairo
 media-libs/libvpx postproc
 media-libs/mesa -llvm wayland
 media-video/ffmpeg openssl -gnutls
-www-client/firefox -clang -telemetry dbus wayland
+www-client/firefox -telemetry dbus wayland
 x11-libs/gtk+ wayland