Public bug reported:

Please remove the ppc64el binaries of tensorpipe-cuda
0.0~git20220513.bb1473a-6 from stonking:

  libtensorpipe-cuda-0 [ppc64el]
  libtensorpipe-cuda-dev [ppc64el]

The 0.0~git20220513.bb1473a-6build1 no-change rebuild in stonking-
proposed has been blocked for 255 days by "missing build on ppc64el". It
fails to build there because nvcc 12.4 cannot parse the GCC 13 libstdc++
headers:

  /usr/include/c++/13/ext/numeric_traits.h(210): error: identifier "__ibm128" 
is undefined
  /usr/include/c++/13/ext/numeric_traits.h(218): error: identifier "__ibm128" 
is undefined
  /usr/include/c++/13/ext/numeric_traits.h(219): error: identifier "__ibm128" 
is undefined
  3 errors detected in the compilation of 
"/<<PKGBUILDDIR>>/tensorpipe/test/channel/kernel.cu".

https://launchpad.net/ubuntu/+source/tensorpipe-
cuda/0.0~git20220513.bb1473a-6build1/+build/32794489

This is not something tensorpipe can fix. The last successful ppc64el
build was -6 in plucky (2024-12). NVIDIA dropped ppc64el after CUDA
12.4; the CUDA 12.5 packages in Debian experimental are built only for
amd64 and arm64.

amd64, amd64v3 and arm64 build fine. armhf, riscv64 and s390x are in
dependency wait (no CUDA there) and never had binaries.

There are no reverse dependencies besides the package's own -dev:

$ reverse-depends -r stonking src:tensorpipe-cuda
(no output)

$ reverse-depends -r stonking -b src:tensorpipe-cuda
No reverse dependencies found

$ reverse-depends -r stonking -a ppc64el libtensorpipe-cuda-0
Reverse-Depends
===============
* libtensorpipe-cuda-dev

$ reverse-depends -r stonking -a ppc64el -b libtensorpipe-cuda-dev
No reverse dependencies found

Suggested removal comment:
FTBFS on ppc64el: nvcc 12.4 cannot parse GCC 13 libstdc++ headers (__ibm128); 
CUDA dropped ppc64el after 12.4; no reverse dependencies

** Affects: tensorpipe-cuda (Ubuntu)
     Importance: Undecided
         Status: Fix Released


** Tags: ftbfs ppc64el remove-candidate

** Tags added: ftbfs ppc64el remove-candidate

** Changed in: tensorpipe-cuda (Ubuntu)
       Status: New => Fix Released

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https://bugs.launchpad.net/bugs/2170672

Title:
  Remove tensorpipe-cuda ppc64el binaries from stonking (FTBFS, CUDA
  dropped ppc64el)

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