Hi Maintainer hdf5 currently has build-dependencies on libcurl4-openssl-dev and libssl-dev which no longer seem to be used. Comparing part of a build log from 1.14.6+repack-2+b1 [1] and 2.2.0+repack-5 [2]: libhdf5-openmpi-310_1.14.6+repack-2+b1_amd64.deb ------------------------------------------------ Depends: libc6 (>= 2.38), libcurl4t64 (>= 7.16.2), libopenmpi40 (>= 5.0.10), libssl3t64 (>= 3.0.0), libsz2 (>= 1.1.6), zlib1g (>= 1:1.2.0) libhdf5-openmpi-320_2.2.0+repack-5_amd64.deb -------------------------------------------- Depends: libc6 (>= 2.38), libopenmpi40 (>= 5.0.10), libsz2 (>= 1.1.7), zlib1g (>= 1:1.2.0) Regards Graham [1] https://buildd.debian.org/status/fetch.php?pkg=hdf5&arch=amd64&ver=1.14.6%2Brepack-2%2Bb1&stamp=1777205263&raw=0 [2] https://buildd.debian.org/status/fetch.php?pkg=hdf5&arch=amd64&ver=2.2.0%2Brepack-5&stamp=1789309528&raw=0