From 07276b5ebe96b4fb226a6f694c1d5b468a27faa0 Mon Sep 17 00:00:00 2001
From: Anton Gladky <gladk@debian.org>
Date: Mon, 16 Mar 2026 06:12:27 +0100
Subject: [PATCH] Relax upstream boost version in substvars. (Closes: #1130578)

---
 debian/control | 2 +-
 debian/rules   | 9 ++++++---
 2 files changed, 7 insertions(+), 4 deletions(-)

diff --git a/debian/control b/debian/control
index fc559d93d..139be33a8 100644
--- a/debian/control
+++ b/debian/control
@@ -85,7 +85,7 @@ Depends: ${misc:Depends},
          ${shlibs:Depends},
          default-jdk [!hppa !hurd-any],
          default-libmysqlclient-dev,
-         libboost-dev (= ${boost:Version}),
+         ${boost:Depends},
          libavcodec-dev,
          libavformat-dev,
          libavutil-dev,
diff --git a/debian/rules b/debian/rules
index e3e1ba08e..f1183d38b 100755
--- a/debian/rules
+++ b/debian/rules
@@ -169,10 +169,13 @@ execute_after_dh_installdocs-indep:
 	find $(CURDIR)/debian/vtk9-doc/ -type f -print0 | xargs -0 sed -i 's/https:\/\/raw\.githubusercontent\.com//g'
 	find $(CURDIR)/debian/vtk9-doc/ -type f -print0 | xargs -0 sed -i 's/https:\/\/cdn\.jsdelivr\.net\/npm\/mathjax@2/\/usr\/share\/javascript\/mathjax/g'
 
-# Record the exact Boost version used at build time so that libvtk9-dev
-# pulls in the same version and triggers a rebuild when Boost is upgraded.
+# Track the versioned libboost*-dev at upstream version only, to avoid rebuilds
+# on boost-defaults/binNMU uploads.
 execute_before_dh_gencontrol:
-	echo "boost:Version=$$(dpkg-query -W -f='$${Version}' libboost-dev)" >> debian/libvtk9-dev.substvars
+	boost_pkg=$$(dpkg-query -W -f='$${Package}\n' 'libboost*-dev' 2>/dev/null \
+		| sed -nE '/^libboost[0-9]+\.[0-9]+-dev$$/p' | sort -V | tail -n1) && \
+	boost_ver=$$(dpkg-query -W -f='$${Version}' "$$boost_pkg" | sed 's/-[^-]*$$//') && \
+	echo "boost:Depends=$$boost_pkg (>= $$boost_ver)" >> debian/libvtk9-dev.substvars
 
 ifeq ($(DEB_HOST_ARCH),sh4)
 override_dh_dwz:
-- 
2.30.2