dpkg has supported zstd-compressed data since version 1.21.18 (and at least in ubuntu 22.04, dpkg 1.21.1 seems to also support it, though the feature is undocumented; I think the support is implicit through tar 1.31+). While pkg_tar does not yet directly support making zstd-compressed tarballs, aside from the possibility of constructing such tarballs by other means, one can still build them by supplying a custom compressor.
Worth noting, every .deb archive that I've spot-checked in the Ubuntu jammy (22.04) repository has used data.tar.zst, which I'd say makes this a pretty main-stream feature.
dpkghas supported zstd-compressed data since version 1.21.18 (and at least in ubuntu 22.04, dpkg 1.21.1 seems to also support it, though the feature is undocumented; I think the support is implicit through tar 1.31+). Whilepkg_tardoes not yet directly support making zstd-compressed tarballs, aside from the possibility of constructing such tarballs by other means, one can still build them by supplying a customcompressor.pkg_debdoes not currently allow using adata.tar.zst, in two places: https://github.com/bazelbuild/rules_pkg/blob/ff60b34e037313927b9067dd883dd82e1fbc211e/pkg/private/deb/deb.bzl#L19 disallows supplying atar.zst. If one fixes that, there's also https://github.com/bazelbuild/rules_pkg/blob/ff60b34e037313927b9067dd883dd82e1fbc211e/pkg/private/deb/make_deb.py#L240-L241 which will strip off the.zstsuffix, rendering the resulting.debunusable.Worth noting, every
.debarchive that I've spot-checked in the Ubuntu jammy (22.04) repository has useddata.tar.zst, which I'd say makes this a pretty main-stream feature.