fix(postfix): update package names for Debian 13 (trixie) compatibility#323
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mrrobot47 merged 2 commits intoJun 5, 2026
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libpcre3 and libpcre3-dev were removed in Debian 13 in favor of PCRE2; libicu72 was renamed to libicu76; libldap-2.4 was renamed to libldap2. Update Postfix build flags to use DHAS_PCRE2 and pcre2-config accordingly. Also bumps base image from debian:13.4-slim to debian:13.5-slim.
- -DHAS_PCRE2 is not a valid Postfix flag; Postfix 3.7+ uses -DHAS_PCRE=2 (numeric) to select PCRE2 at compile time (see src/util/dict_pcre.c). - pcre2-config --libs exits with code 1 (usage error); the correct flag for linking the 8-bit library is --libs8. - debian:13.5-slim no longer ships adduser/addgroup; add the adduser package to the initial apt-get install block. - debian:13.5-slim auto-enables HAS_NIS via makedefs but rpcsvc/ypclnt.h is only available from libnsl-dev (not installed); add -DNO_NIS to CCARGS to disable legacy NIS support, which is unnecessary in a container environment.
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The postfix build has been failing since the base image was bumped to
debian:13.x-slimbecause three packages were removed or renamed in Debian 13 (trixie).Root cause
libpcre3libpcre2-8-0libpcre3-devlibpcre2-devlibicu72libicu76libldap-2.4libldap2The Postfix build flags also reference
pcre-config(PCRE1 tool) which no longer exists. Updated to usepcre2-configand theDHAS_PCRE2compile flag, which Postfix 3.7+ supports natively.Changes
libpcre3→libpcre2-8-0(runtime)libicu72→libicu76(runtime)libldap-2.4→libldap2(runtime)libpcre3-dev→libpcre2-dev(build dep)-DHAS_PCRE $(pcre-config --cflags)→-DHAS_PCRE2 $(pcre2-config --cflags)AUXLIBS_PCRE="$(pcre-config --libs)"→AUXLIBS_PCRE="$(pcre2-config --libs)"debian:13.5-slim(latest)