Hi Andreas,
On Sat, May 09, 2026 at 11:09:30PM +0200, Andreas Tille wrote:
I tried hard to get the new version of python-cramjam build successfully.
https://salsa.debian.org/python-team/packages/python-cramjam
It seems it needs a Rust package build from
https://github.com/cramjam/libcramjam
to build successfully. I have no idea about Rust packaging and need some
advise how to proceed from here.
So I started looking into this, and then got a bit carried away..
I'm not sure about patch
debian/patches/restrict_to_python_module.patch, since it adds a new
workspace member "libcramjam" that does not exist; adjusted to drop
that but keep removal of the js crate.
libcramjam appears to be an externally hosted Rust package
(https://github.com/cramjam/libcramjam), so needed to
be packaged separately. I've done so in the debcargo-conf repository
(https://salsa.debian.org/rust-team/debcargo-conf/-/commit/08ad74dcce333bd4aa740f04359039a340a19943).
libcramjam depended on rust-libdeflate-sys, which is not in Debian but
behind an optional feature so for the moment I've just disabled
gzip/zlib support in libcramjam, but that can be re-enabled once
rust-libdeflate-sys is packaged (this is non-trivial since it needs to
be build against a different version of libdeflate than currently
packaged in Debian). Same for blosc2-rs and isal-rs. Not sure if this
is okay for what you need cramjam for (and I haven't looked at what
older versions provide), but we can also package those
dependencies if needed.
cramjam was using an old version of pyo3, so I had to port it to 0.28
(patched). Submitted upstream here:
https://github.com/milesgranger/cramjam/pull/240
I've dropped the -static features since we don't support those in
most Debian crates.
For non-rust-team packages, "debcargo update-dependencies" is
convenient for updating debian/control, so running that after applying
patches:
caledvlwch% QUILT_PATCHES=debian/patches/ quilt push -a
...
caledvlwch% /usr/bin/debcargo update-dependencies --drop-unreferenced
...
Updating debian/control...
...
Done!
See
https://salsa.debian.org/python-team/packages/python-cramjam/-/merge_requests/1
for the merge request with the above changes.
This builds for me and the testsuite passes for me, with the exception
of one unrelated failure in click.
Cheers,
Jelmer
