chore: build perl 5.26.2 on Debian 13 (trixie)

[chylli-deriv]

Why

Configure records the build host's library set in $Config{perllibs}, and every later XS build links against it. The committed perl was built on bullseye, so perllibs still contains -lnsl. Debian 13 dropped libnsl.so from libc6-dev, so on a trixie userland every XS link probe dies:

/usr/bin/cc ... -lpthread -lnsl -ldl -lm -lcrypt -lutil -lc assertlib.c -o assertlib -lexpat
/usr/bin/ld: cannot find -lnsl: No such file or directory
Can't link/include C library 'expat.h', 'expat', aborting.

XML::Parser and ZMQ::LibZMQ3 stop configuring, which cascades into a pile of missing modules downstream. This blocks moving the perl base image to Debian 13.

The change

One line — the build container in build_workflow.yml:

-      image: debian:bullseye
+      image: debian:trixie

No source patches were added. perl 5.26.2 builds clean on gcc 14.2.0 with the two patches already in patches/.

Verification

Reproduced in a local debian:trixie container (gcc 14.2.0) before pushing:

• Configure, make, make test (All tests successful.), make install all pass
• perllibs='-lpthread -ldl -lm -lcrypt -lutil -lc' — no -lnsl
• XML::Parser@2.46 and ZMQ::LibZMQ3@1.19 both install without libnsl-dev — i.e. the exact two that fail today

Then confirmed end to end on CI (native amd64), which produced:

gccversion='14.2.0'
perllibs='-lpthread -ldl -lm -lcrypt -lutil -lc'

One caveat worth recording: an initial local run reported 4 failures, all in dist/Net-Ping with icmp socket error - Operation not permitted. That is rootless podman refusing raw ICMP sockets, not a Debian 13 regression — re-running with --cap-add=NET_RAW gave All tests successful.

Heads up on the diff size

The [ci skip] compile 5.26.2 commit is the artifact pushed by this repo's own auto-compile workflow. It reads roughly 78 files changed, 43 insertions(+), 33068 deletions(-).

That large deletion count is expected, not a mistake. rebuild.sh does rm -rf bin lib man and the workflow then moves the freshly installed tree into place, so anything not produced by make install disappears — in practice bin/cpanm, bin/c2ph, bin/pstruct and lib/site_perl/.../App/cpanminus (fatscript.pm alone is 25k lines). bin/ goes from 34 files to 31.

This matches what previous CI-compiled commits on this repo have always produced, and it was checked against the consumers: none of them use the committed cpanm — they each bootstrap their own from https://cpanmin.us, and the image chain inherits that.

🤖 Generated with Claude Code

[github-actions]

Dependency Review

✅ No vulnerabilities or license issues or OpenSSF Scorecard issues found.

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[chylli-deriv]

Wrong direction — this targeted master directly. Reopening as a PR from the fork into the debian_trixie_perl-5.26.2 branch instead.