Build Rust extension reproduciblydebian/1.90.0-1

2 files changed, 17 insertions, 0 deletions

diff --git a/debian/changelog b/debian/changelog
index 0a4e0cd5..158c86a9 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -3,6 +3,7 @@ matrix-synapse (1.90.0-1) unstable; urgency=medium
   [ Andrej Shadura ]
   * New upstream release.
   * Update licenses.
+  * Build Rust extension reproducibly.
 
   [ Antonio Russo ]
   * Refresh patches.
diff --git a/debian/rules b/debian/rules
index 6cd8c0f6..e474bf7b 100755
--- a/debian/rules
+++ b/debian/rules
@@ -1,13 +1,29 @@
 #!/usr/bin/make -f
 
 include /usr/share/dpkg/default.mk
+include /usr/share/rustc/architecture.mk
+
+export CFLAGS CXXFLAGS CPPFLAGS LDFLAGS
+export DEB_HOST_RUST_TYPE DEB_HOST_GNU_TYPE
 
 export PYBUILD_NAME=matrix-synapse
+
+export PATH := /usr/share/cargo/bin:$(PATH)
+
+export CARGO=/usr/share/cargo/bin/cargo
+export CARGO_HOME=$(CURDIR)/debian/cargo_home
+
+export DEB_CARGO_CRATE=$(DEB_SOURCE)_$(DEB_VERSION_UPSTREAM)
+
 %:
 	dh $@ --buildsystem=pybuild
 
 execute_before_dh_auto_configure:
 	sed -i '/common/s/~=/>=/' pyproject.toml
+	$(CARGO) prepare-debian debian/cargo_registry --link-from-system
+
+execute_after_dh_auto_clean:
+	rm -rf debian/cargo_registry
 
 override_dh_auto_install:
 	dh_auto_install