Bug#1100981: libmlir-19 fails to coinstall

[Helmut Grohne]

Package: libmlir-19
Version: 1:19.1.4-1
Severity: serious
User: debian-qa at lists.debian.org
Usertags: fileconflict

libmlir-19 fails to coinstall despite it explicitly stating that
capability.

mmdebstrap --variant=apt --verbose '' /dev/null 'deb http://deb.debian.org/debian unstable main' --architectures=amd64,i386 --include=libmlir-19,libmlir-19:i386

Preparing to unpack .../35-libmlir-19_1%3a19.1.7-3_amd64.deb ...
Unpacking libmlir-19:amd64 (1:19.1.7-3) ...
dpkg: error processing archive /tmp/apt-dpkg-install-BE1hEv/35-libmlir-19_1%3a19.1.7-3_amd64.deb (--unpack):
 trying to overwrite shared '/usr/lib/llvm-19/lib/libMLIR.so.19.1', which is different from other instances of package libmlir-19:amd64
Errors were encountered while processing:
 /tmp/apt-dpkg-install-BE1hEv/35-libmlir-19_1%3a19.1.7-3_amd64.deb
E: Sub-process env returned an error code (1)

Please either move those libraries to a multiarch location or remove
"Multi-Arch: same" from the libmlir-19 binary package. Given the freeze
timing I recommend doing the latter.

Please also check other packages of llvm-toolchain-19 for violating
coinstallation properties.

Helmut