cdo (3) Homepage: https://code.mpimet.mpg.de/projects/cdo Vcs Debian Science Maintainers
531689	Please add documentation
922748	cdo FTBFS with flang compiler
1128430	cdo: FTBFS: basename: missing operand	forky, ftbfs, sid
cmor (2) Homepage: https://cmor.llnl.gov/ Vcs Debian Science Maintainers
922749	cmor FTBFS with the flang fortran compiler
1035149	cmor: please add autopkgtests (to add coverage for python3-numpy)
coda (1) Homepage: https://github.com/stcorp/coda Vcs Debian Science Maintainers
1050779	coda: Drop unused libnetcdf-dev build dependency	patch
fcm (1) Homepage: https://beta.metoffice.gov.uk/research/weather/weather-science-it/fcm Vcs Alastair McKinstry
1088453	fcm: move from twitter-bootstrap{3,4} to bootstrap-html (v5)	upstream
fftw (4) Homepage: https://fftw.org Vcs Debian Science Team
143910	soname problems: sfs-lib package name without soname
408018	fftw2 should split MPI libraries into a separate package
577481	fftw-docs: tests in "examples" subdir fail many tests
1044444	fftw: Fails to build source after successful build	forky, ftbfs, sid, trixie
fftw3 (7) Homepage: https://fftw.org Vcs Debian Science Maintainers
942359	Please provide libfftw3-long3 on all platforms
948086	package fftw3 does not install cmake config files
1044274	fftw3: Fails to build source after successful build	forky, ftbfs, sid, trixie
1054906	fftw3: Please enable avx2	patch
1075985	libfftw3-mpi3 might be misbuilt with MPICH as default	forky, ftbfs, sid, trixie
1107055	fftw3 FTCBFS: gfortran dependency not satisfiable	patch
1124854	fftw3: please build using the default build flags
gadap (1) Homepage: http://cola.gmu.edu/grads/grads.php Vcs Debian Science Maintainers
1044758	gadap: Fails to build source after successful build	forky, ftbfs, sid, trixie
gpyfft (3) Homepage: https://github.com/geggo/gpyfft Vcs Debian Science Maintainers
878349	gpyfft: FTBFS on non-Linux: CLFFT_INCL_DIRS is not defined	upstream
1117496	uses hardcoded paths (that aren't guaranteed to not exist) during build
1120241	gpyfft: FTBFS: AttributeError: module 'gpyfft.gpyfftlib' has no attribute 'CLFFT_DOUBLE'	forky, ftbfs, sid
hdf-eos4 (3) Homepage: https://www.hdfeos.org Vcs Debian Science Maintainers
922829	hdf-eos4 FTBFS with the Flang Fortran compiler
1044406	hdf-eos4: Fails to build source after successful build	forky, ftbfs, sid, trixie
1074068	Package descriptions contain reference to nonexistent bibliography sources
hdf-eos5 (2) Homepage: https://www.hdfeos.org Vcs Debian Science Maintainers
922830	hdf-eos5 FTBFS with the Flang Fortran compiler
1044772	hdf-eos5: Fails to build source after successful build	forky, ftbfs, sid, trixie
lapack (5) Homepage: https://www.netlib.org/lapack/ Vcs Debian Science Team
354463	Undefined symbols/changed size between lapack and blas
694625	libblas3gf: DGEMV does not handle properly N=0
1110956	lapack: FTBFS on hppa and alpha - segmentation fault in testsuite
1117208	python3-numpy: Can't find libblas and liblapack	moreinfo
1122085	liblapack3: Library can not be loaded after dist upgrade from bullseye	d-i
libterralib (2) Homepage: http://www.terralib.org/ Not maintained in Vcs Alastair McKinstry
540780	Supply versioned symbols for libterralib library
914033	libterralib FTCBFS: runs qmake for the build architecture	patch
magics++ (2) Homepage: https://software.ecmwf.int/wiki/display/MAGP/Magics Vcs Debian Science Maintainers
792824	libmagics++-dev: arch-dependent files in "Multi-Arch: same" package
922840	magics++ FTBFS with the Flang Fortran compiler
metkit (1) Homepage: https://github.com/ecmwf/metkit Vcs Debian Science Maintainers
1050792	metkit: Drop unused libnetcdf-dev build dependency	patch
mpi-defaults (2) Homepage: Vcs Debian Science Team
575259	mpi-default-dev doesn't ensure that the right implementation is used	patch
895822	Should we switch the standard default MPI to MPICH?
ncl (5) Homepage: https://www.ncl.ucar.edu/ Vcs Debian Science Maintainers
820683	ncl: Conflicting declarations of variable ColorErr
922850	ncl FTBFS with the Flang Fortran compiler
1049226	ncl: Fails to build source after successful build	forky, ftbfs, sid, trixie
1051194	ncl-ncarg: The ictrans binary file is missing in /usr/bin after upgrading from bullseye to buster
1105423	ncl: FTBFS with make --shuffle=reverse: make[2]: *** No rule to make target 'depend'. Stop.	forky, ftbfs, sid, trixie
netcdf (1) Homepage: http://www.unidata.ucar.edu/software/netcdf/ Vcs Debian GIS Project
1123960	netcdf: CVE-2025-14932 CVE-2025-14933 CVE-2025-14934 CVE-2025-14935 CVE-2025-14936	security, upstream
odc (1) Homepage: https://github.com/ecmwf/odc Vcs Debian Science Maintainers
1104361	ecmwflibs: FTBFS: ImportError: /lib/x86_64-linux-gnu/libodccore.so.0d: undefined symbol: _ZN5eckit14NotImplementedC1ERKNS_12CodeLocationE	forky, ftbfs, sid, trixie
open-coarrays (3) Homepage: https://www.opencoarrays.org/ Vcs Debian Science Maintainers
878704	open-coarrays: FTBFS on powerpc: get_array test times out	upstream
922852	open-coarrays FTBFS with the Flang Fortran compiler
1018756	libcoarrays-openmpi-dev: test program compiles but fails with runtime error
pyfftw (1) Homepage: https://github.com/pyFFTW/pyFFTW Vcs Debian Science Maintainers
917095	python3-pyfftw: alignment tests fail on several arches	ftbfs
python-ulmo (1) Homepage: https://github.com/ulmo-dev/ulmo Vcs Debian Science Maintainers
1105600	python-ulmo: FTBFS with make --shuffle=reverse: make[1]: *** [debian/rules:26: override_dh_installdocs] Error 25 shuffle=reverse	forky, ftbfs, sid, trixie
spherepack (2) Homepage: https://www.cisl.ucar.edu/research-software/software Vcs Debian Science Maintainers
844309	spherepack: merge double precision version of spherepack from ncl into this package
922858	spherepack FTBFS with the Flang Fortran compiler
wreport (1) Homepage: https://github.com/ARPA-SIMC/wreport Vcs Enrico Zini
861451	wreport: does not compile on kfreebsd and hurd (but did so in the past)

Open bugs in suggested packages

1 serious, 19 important, 74 normal, 11 minor, 30 wishlist

gcc-defaults (98) Homepage: Vcs Debian GCC Maintainers
33975	[PR c++/6905] Suggested g++ warning: changed semantics of conditional expressions	upstream, wontfix
55298	[PR c/3481, partly fixed in 3.2] function attributes should apply to function pointers too	upstream
75269	[known limitation] Mangling in ObjC class and protocol names	upstream, wontfix
75773	[PR optimization/3507]: appalling optimisation with sub/cmp on i386	upstream
107123	[PR optimization/3507, optimization/3996] Non-optimal code	upstream
117563	[known upstream] g++: keyword "export" ignored	upstream
122103	[PR other/9071] Warning for blocks not closed in same file as opened in	upstream
123468	[PR c/6906] warn about asserts with side effects	upstream
159838	[PR c/7853] gcc reports multiple symbol definitions on the wrong line	fixed-upstream, upstream
173513	[PR optimization/9079] Inline constant function pointers	fixed-upstream, upstream
195468	g++ fails to recognize illformedness of certain initializers	fixed-upstream, upstream
204687	[PR 11877] gcc should use xor trick with -Os	fixed-upstream, upstream
211586	[PR 13071] no way to exclude backward C++ headers from include path	fixed-upstream, upstream
221291	[IA64] `asm' operand requires impossible reload	upstream
222497	[PR 13947] ptr_fun doesn't recognise argument	fixed-upstream, upstream
233673	[PR 14708] description of -ffloat-store in gcc man page incorrect/inaccurate	fixed-upstream, upstream
273264	Lacking documentation of mixing dynamic and static linking
337340	[PR28319] sentinel attribute should support non-NULL sentinels	upstream
352790	[PR28315] gcc doesn't use locale for default input charset	upstream, wontfix
352920	cpp: Please undeprecate -I-
354700	[PR28321] gcc 4 does not notice C syntax error	upstream
358050	line number in extra qualification error not ideal (end of declaration)	fixed-upstream, upstream
365123	[PR 27453] gcov opens files with O_RDWR	upstream, wontfix
382746	powerpc libgcc writes code to the stack	upstream
386174	[PR29227] gcc sometimes doesn't recognize uninitialized variables	upstream
405791	gcc-defaults: Please provide gcc-locales metapackage
425623	[PR34941] gcc: Option to warn on printf of ptrdiff_t without t size modifier
426809	[PR34942] -frepo only works with C locale	fixed-upstream, upstream
428559	collect2 ENOSPC => exit status 1 with no stderr output	upstream
428814	[powerpc] error: initializer element is not constant	upstream
438641	gcc does not permit mixing -shared and -static objects when linking (or: please pass -static-libgcc automatically)
438816	gcc-multilib: Please provide target-gcc binary for the multilib architecture
471258	maildrop: Maildrop hangs indefinitely on arm when compiled with optimizations	moreinfo
501560	[gfortran] Documentation lacks information about how to compile a module	upstream, wontfix
503204	gcc-4.1: erroneously emits warning on C99-required #pragma STDC FENV_ACCESS	upstream
533124	c99-gcc -I breaks POSIX conformance
551637	gfortran: GPREL16 error when linking fortran and C code	moreinfo
552314	gcc produces invalid mips branch instructions
558728	[PR42550, fixed in 4.5] gfortran: Unable to give initial value	fixed-upstream, upstream, wontfix
576945	unaligned relocations on armel when compiling without -g
605593	synaptic gfortran versioning wrong in lenny and sid
606333	[ia64] internal compiler error: Segmentation fault
608923	GCC 4.4 fails when dynamic_cast are used with dlopen/dlsym
627370	gcc-4.4 (Compilation does not occur properly due to some error)
657962	gcc-defaults: Add gcc-plugin-dev?
669297	gcc-defaults: defcheckout fails
669417	cpp: debcheckout fails
683447	gcc-defaults: provide fully qualified compiler names for dpkg multi-arch cross
693173	gcc-mingw32: float comparison fails assertion only with -std=c99
714521	base: (GCC\|G++\|something else in the toolchain) produces segfaulting code
714730	gfortran: binNMU is needed for all packages which contains Fortran90 .mod file when upgrading default version	help
715262	Spurious -Warray-bounds warning
715271	Preprocessor handles _Pragma badly
719015	Double rounding bug in the conversion from decimal string to single precision floating point literals.
729611	GCC 4.8 -Wconversion raises false positive on shift operation
731060	gcc-defaults: Please move symlink of /usr/include/asm from 'gcc-multilib' to 'gcc' package	wontfix
751024	g++ 4.7.3 - Internal compiler error
756120	gcc-defaults: Please provide libstdc++-doc metapackage	patch
763718	gcc-defaults is not binNMU-safe
770423	More GCC multiarch/cross
774623	Suspected bug in function printf()
780718	return in ?:-operator with function calls is incorrectly optimized
783328	gdc: Phobos D standard library not available on PowerPC
784681	g++ fails to build preprocessed code in mednafen
798149	Compilation with the -O2 flag on i386 can lead to stuck exec
804561	GCC can't compile a program using RDSEED intrinsics	buster, forky, jessie, sid, trixie
805422	ARM64 (AARCH64): Compiler accepts -fsanitize=undefined, without warning, but fails to link with "/usr/bin/ld: cannot find -lubsan"	upstream
807491	gdc: -fmake-deps misses transitive dependencies
808728	gdc: Enable -Wdeprecated with -Wall or -Wextra
818996	Please enable -Wabi-tag warning for C++ programs
820831	gcc miscompiling memcpy
827243	[armhf] Miscompiles with -O2, throws deque::_M_new_elements_at_back
850892	gcc should not warn about the assignment-allocation character 'm' when POSIX is enabled	upstream
858798	Wrong debug line numbers from g++ with varargs function
860117	gcc-defaults: gdc<cross-triplet>: unhandled directory to symlink conversion: /usr/share/doc/PACKAGE
872054	gcc-multilib: installation of gcc-X-multilib should not yield the installation of the default gcc
872891	gcc-multilib conflicts with GCC cross toolchains	wontfix
874545	gfortran: when compiled with -fopenmp -O0, application generates a SIGSEGV
886638	gcc-aarch64-linux-gnu: wrong symbol address
889821	[gcc] gcc 7 and 8 error message on restrict-qualified parameter refers to wrong parameter
901943	gfortran aborts with internal compiler error: segmentation fault	fixed-upstream, upstream
905266	gfortran: Write and read arrays in unformatted files do not work properly	moreinfo
920582	gcc -v --help prints some output to stderr, not just stdout
959966	gdc -flto doesn't accept void main() signature.
977797	provide gcc-source metapackage
978947	gcc-defaults: please upload gcc-defaults/experimental (for gcc-11)
980277	gcc: c99(1) provided by c99-gcc(1) isn't conforming to POSIX
982414	gcc-defaults should provide a libgccjit-dev package
985837	document in README.source how README.Debian is generated from README.Debian.m4
1015242	gcc Trademark violation on the horizon	upstream
1021673	Wrong __cplusplus definition when using -std=c++20
1063882	gcc: Internal error from ternary cond as inline asm parameter	moreinfo
1101096	gcc-multilib: please enable gcc-multilib for hurd-amd64
1106736	(no subject)
1107136	gfortran: 14.2.0-1 internal compiler error on arm64/PinePhone with -W(maybe-)uninitialized
1108230	PRINT: compilation: gcc: Kali / Debian / ubuntu default to --as-needed, causing mishaps
1109509	gcc-offload-amdgcn: fails to dist-upgrade from bookworm to trixie
1111845	gfortran: compiling this code will cause an internal compiler error
ksh93u+m (22) Homepage: http://www.kornshell.com/ Vcs Anuradha Weeraman
159090	acct: "lastcomm -f -" broken	upstream, wontfix
378809	please consider building a sfio package	wontfix
597776	ksh: issues with colour prompt
721986	ksh: Command history file corrupted when starting multiple ksh
728225	Significant memory leak in ksh	moreinfo, unreproducible
733631	ksh: octal support in arithmetic evaluation breaks ksh compatibility	wontfix
736410	ksh killed by SIGSEGV due to overflow in subshell loop	confirmed
821806	ksh does not export symbols to loaded "built-in" modules	upstream
864632	ksh package does not include libraries needed to load "loadable built-ins"
894802	ksh: parsing of floating-point constants is broken in locales where the decimal point is not "."
908227	ksh: the status of the options should not depend on $VISUAL
919070	ksh: fails to add /bin/ksh to /etc/shells
940989	ksh: KEYBD trap with undefined associative-array elements kills shell
973669	ksh: ignores tracked aliases during execution	upstream
990264	ksh: output error is not checked for some builtins	upstream
1026305	ksh93: time: not found
1037971	ksh93u+m: read statement in subshell fails for 0 or 1 character followed by tab
1061115	ksh93u+m: please configure a static CHILD_MAX value at build-time
1068338	ksh93u+m: "test ! = -o a" exits with 0 instead of 1	fixed-upstream, upstream
1068340	ksh93u+m: "test a = a b": undetected error	fixed-upstream
1069341	ksh93u+m should not be advertised as being POSIX compliant
1121521	ksh93u+m: incorrect error message for ${${v}}	upstream
pkgconf (13) Homepage: http://pkgconf.org/ Vcs Andrej Shadura
622931	Possibility to express linking modes	help
665806	pkg-config: please exit with non-zero exit code if requested variable doesn't exist
749048	pkg-config: Use /usr/lib/pkgconfig in cross-builds on Ubuntu	patch
752869	pkg-config: Please make --variable=flags --libs act like `--cflags --libs`
967969	pkg-config-crosswrapper wrongly asks to install dpkg-dev even if installed already	patch
984504	pkg-config: "pkg-config --cflags" incorrectly omits -I flags
998017	pkg-config: Build a library with its own .pc file	upstream
1006570	pkg-config-crosswrapper: misdetects architecture in the presence of dpkg-architecture variables	patch
1025065	pkgconf should support packages in generating dependencies
1028105	pkg-config:amd64 does not include necessary default search path
1041941	$ARCH-pkg-config reads a file ./$ARCH
1049846	pkgconf: Fails to build binary packages again after successful build	forky, ftbfs, sid, trixie
1057955	pkgconf: issues wrong pc_path for non-default personality	patch
python-coards (1) Homepage: http://code.dealmeida.net/coards Vcs Debian Science Maintainers
1081412	python-coards: homepage defunct
python-threadpoolctl (1) Homepage: https://github.com/joblib/threadpoolctl Vcs Debian Science Maintainers
1001578	Missing egg-info folder

Done bugs

atlas-ecmwf (1) Homepage: https://github.com/ecmwf/atlas Vcs Debian Science Maintainers
1129808	atlas-ecmwf: FTBFS with boost 1.90	forky, ftbfs, sid
eccodes (2) Homepage: https://software.ecmwf.int/wiki/display/ECC/ecCodes+Home Vcs Debian Science Maintainers
1124157	emoslib: FTBFS: The imported target "eccodes_static" references the file "/usr/lib/x86_64-linux-gnu/fortran/gnu/libeccodes_static.a" but this file does not exist.	forky, ftbfs, sid
1127495	eccodes: Makes several packages to FTBFS	forky, ftbfs, sid
eckit (1) Homepage: https://github.com/ecmwf/eckit Vcs Debian Science Maintainers
1044845	eckit: Fails to build source after successful build	forky, ftbfs, sid, trixie
emoslib (2) Homepage: https://confluence.ecmwf.int/display/EMOS/Emoslib Vcs Debian Science Maintainers
1015395	emoslib: ftbfs with LTO (link time optimization) enabled	forky, sid, trixie
1126308	emoslib FTBFS with CMake 4	ftbfs
esda (1) Homepage: https://github.com/pysal/esda Vcs Debian Science Maintainers
1127790	esda: autopkgtest regression with scikit-learn 1.8.0
fckit (1) Homepage: https://github.com/ecmwf/fckit Vcs Debian Science Maintainers
1130906	fckit: BD-Uninstallable on s390x: fckit build-depends on missing: flang-21:s390x	ftbfs
hdf-eos4 (1) Homepage: https://www.hdfeos.org Vcs Debian Science Maintainers
1130851	control Vcs-Browser seems not available on salsa
libdap (1) Homepage: https://www.opendap.org/ Vcs Debian Science Maintainers
1111801	libdap: Drop unused cxxtest build dependency	patch
libgctp (1) Homepage: https://github.com/OkoSanto/GCTP Vcs Debian Science Maintainers
1115395	libgctp: Fix SONAME filename handling	patch
makedepf90 (2) Homepage: https://github.com/amckinstry/makedepf90 Vcs Debian Science Maintainers
1048008	makedepf90: Fails to build source after successful build	forky, ftbfs, sid, trixie
1049692	makedepf90: Fails to build binary packages again after successful build	forky, ftbfs, sid, trixie
oasis3 (1) Homepage: https://www.prism.enes.org/PAEs/coupling_IO/software_OASIS3.php Vcs Alastair McKinstry
1105439	oasis3: FTBFS with make --shuffle=reverse: Fatal Error: Cannot open module file âconstants.modâ for reading at (1): No such file or directory	forky, ftbfs, sid, trixie
r-cran-rnetcdf (1) Homepage: https://cran.r-project.org/package=RNetCDF Vcs Debian R Packages Maintainers
1130425	src:r-cran-rnetcdf: fails to migrate to testing for too long	forky, sid

^*To estimate the overall status of the packages in the dependencies of a metapackage a weighted severity is calculated. Done bugs are ignored and bugs in dependent and recommended packages are weighted by factor three compared to suggested packages. Release critical bugs have a much larger weight than important, while the contribution of normal bugs is even smaller and minor bugs have a very small weight. Wishlist bugs are ignored in this calculation. The resulting sum is compared to some boundaries to find a verbal form. The actual numbers need some adjustment to make real sense - this evaluation method is in testing phase.
The severities of bugs are weighted as follows:

critical	10
grave	10
serious	10
important	5
normal	3
minor	1
wishlist	0