Bug#1077672: libgtk-3-0t64: Cannot install due conflict with libgtk-3-0:arm64 1:3.24.38-2~deb12u1+rpt6+rpi1

[Mike Green]

Package: libgtk-3-0t64
Version: /var/cache/apt/archives/libgtk-3-0t64_3.24.43-1_arm64.deb
Severity: critical
Justification: breaks the whole system
X-Debbugs-Cc: mikegreen10504 at gmail.com, mikegreen10504 at gmail.com

After trying to install xfce4-screenshooter which claims to depend on this package, the system is broken.  All further install attempts direct to

apt --fix-broken install

which in turn tries to re-install the subject gtk package and causes an error. Consequently, no other packages can be installed on this system or admin actions with apt can be taken. 

Was looking to install gflags-dev.  It appears that the conflict is with another version of gtk (the raspberry pi one?!) which doesn't export the necessary target(the raspberry pi one?!)   


-- System Information:

Debian Release: trixie/sid
  APT prefers stable-updates
  APT policy: (500, 'stable-updates'), (500, 'stable-security'), (500, 'unstable'), (500, 'stable')
Architecture: arm64 (aarch64)
Foreign Architectures: armhf

Kernel: Linux 6.6.31+rpt-rpi-v8 (SMP w/4 CPU threads; PREEMPT)
Kernel taint flags: TAINT_CRAP
Locale: LANG=en_US, LC_CTYPE=en_US (charmap=ISO-8859-1) (ignored: LC_ALL set to en_US), LANGUAGE=en_US
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages libgtk-3-0t64 depends on:
ii  adwaita-icon-theme     46.0-1
it  hicolor-icon-theme     0.18-1
iu  libatk-bridge2.0-0t64  2.52.0-1
iu  libatk1.0-0t64         2.52.0-1
ii  libc6                  2.38-14
ii  libcairo-gobject2      1.16.0-7+rpt1
ii  libcairo2              1.16.0-7+rpt1
iu  libcloudproviders0     0.3.6-1
ii  libcolord2             1.4.6-2.2
iu  libcups2t64            2.4.10-1
ii  libepoxy0              1.5.10-1+b2
ii  libfontconfig1         2.15.0-1.1
ii  libfribidi0            1.0.13-3+b1
ii  libgdk-pixbuf-2.0-0    2.42.10+dfsg-1+deb12u1
iu  libglib2.0-0t64        2.80.4-1
ii  libgtk-3-common        1:3.24.38-2~deb12u1+rpt6+rpi1
ii  libharfbuzz0b          6.0.0+dfsg-3
ii  libpango-1.0-0         1.50.12+ds-1
ii  libpangocairo-1.0-0    1.50.12+ds-1
ii  libpangoft2-1.0-0      1.50.12+ds-1
ii  libwayland-client0     1.22.0-2.1+b1
ii  libwayland-cursor0     1.22.0-2.1+b1
ii  libwayland-egl1        1.22.0-2.1+b1
ii  libx11-6               2:1.8.7-1+b1
ii  libxcomposite1         1:0.4.5-1+b1
ii  libxcursor1            1:1.2.2-1
ii  libxdamage1            1:1.1.6-1+b1
ii  libxext6               2:1.3.4-1+b1
ii  libxfixes3             1:6.0.0-2+b1
ii  libxi6                 2:1.8.1-1
ii  libxinerama1           2:1.1.4-3+b1
ii  libxkbcommon0          1.6.0-1+b1
ii  libxrandr2             2:1.5.4-1
it  shared-mime-info       2.2-1

Versions of packages libgtk-3-0t64 recommends:
iu  libgtk-3-bin     1:3.24.38-2~deb12u1+rpt6+rpi1
ii  librsvg2-common  2.54.7+dfsg-1~deb12u1

Versions of packages libgtk-3-0t64 suggests:
ii  gvfs  1.50.3-1