tce-load -i compiletc python3.9-dev py3.9gobject-dev cython3.9 python3.9-setuptools libbluetooth-dev

wget https://github.com/blueman-project/blueman/releases/download/2.4.2/blueman-2.4.2.tar.xz

cd blueman-2.4.2

CC="gcc -flto -mtune=generic -Os -pipe" CXX="g++ -flto -mtune=generic -Os -pipe -fno-exceptions -fno-rtti" ./configure --prefix=/usr/local --disable-static --localstatedir=/var libexecdir=/usr/local/lib/blueman --with-dhcp-config=/usr/local/etc/dhcpd.conf --with-systemdsystemunitdir=/usr/local/lib/systemd/system --with-systemduserunitdir=/usr/local/lib/systemd/user

find . -name Makefile -type f -exec sed -i 's/-g -O2//g' {} \;

make [0m 8.06s]
sudo make install

edit org.blueman.gschema.xml
    <key type="b" name="notification-daemon">
      <default>true</default>
-> false

    <key type="as" name="plugin-list">
      <default>[]</default>
-> ['TransferService', 'StatusIcon', 'StandardItems', 'ShowConnected', 'SerialManager', 'RecentConns', 'PowerManager', 'PPPSupport', 'Networking', 'NetUsage', '!NMPANSupport', '!NMDUNSupport', 'Menu', 'KillSwitch', 'Headset', 'GameControllerWakelock', 'ExitItem', 'DiscvManager', 'DhcpClient', 'DBusService', 'AuthAgent', 'AppIndicator']

blueman 2.4.2

Prefix: /usr/local
System configuration directory: ${prefix}/etc
Python version: 3.9
Policykit-1 Enabled: no
Thunar sendto installation enabled: yes
Caja sendto: no
Nemo sendto: no
Nautilus sendto: no
Settings menu integration enabled: yes
Dhcpd 3 configuration file: /usr/local/etc/dhcpd.conf
PulseAudio support: yes
Systemd system unit dir: /usr/local/lib/systemd/system
Systemd user unit dir: /usr/local/lib/systemd/user
Icon theme: gnome-icon-theme, mate-icon-theme, adwaita-icon-theme, elementary-xfce, or Papiru