VPN-6220: Fix systemd installation on Ubuntu/noble (#9186)

* Fix systemd installation on Ubuntu/noble
* Fix some syntax warnings in xlifftool.py

linux/debian/rules

@@ -11,8 +11,10 @@ ifneq (ok,$(shell dpkg --compare-versions $(GOLANG_NATIVE_VERSION) ge 2:1.18 &&
 	export PATH := $(GODIR)/bin:$(PATH)
 endif
 
+CMAKE_BUILD_DIR := build-$(DEB_HOST_MULTIARCH)
+
 %:
-	dh $@ --with=systemd --buildsystem=cmake+ninja --warn-missing
+	dh $@ --with=systemd --buildsystem=cmake+ninja --builddirectory=$(CMAKE_BUILD_DIR) --warn-missing
 
 override_dh_auto_configure:
 	dh_auto_configure -- -DWEBEXT_INSTALL_LIBDIR=/lib -DBUILD_ID=$(DEB_VERSION) -DBUILD_TESTS=OFF
@@ -24,10 +26,10 @@ override_dh_installdocs:
 override_dh_installinfo:
 
 override_dh_installsystemd:
-	dh_installsystemd debian/mozillavpn/lib/systemd/system/mozillavpn.service
+	dh_installsystemd $(CMAKE_BUILD_DIR)/src/mozillavpn.service
 
 override_dh_systemd_start:
-	dh_systemd_start debian/mozillavpn/lib/systemd/system/mozillavpn.service
+	dh_systemd_start $(CMAKE_BUILD_DIR)/src/mozillavpn.service
 
 override_dh_systemd_enable:
-	dh_systemd_enable debian/mozillavpn/lib/systemd/system/mozillavpn.service
+	dh_systemd_enable $(CMAKE_BUILD_DIR)/src/mozillavpn.service

scripts/utils/xlifftool.py

@@ -78,9 +78,9 @@ def render(self, trid, format=None, strip_trid=0):
     # Perform variable substitution and return the transformed text.
     def transform(self, text):
         start = 0
-        ac_regex = re.compile('@[\w.]+@') ## Autoconf style match: @VARNAME@
-        cm_regex = re.compile('\${[\w.]+}')  ## CMake style match: ${VARNAME}
-        qt_regex = re.compile('qtTrId("[\w.]+")') ## Qt match: qtTrId("VARNAME")
+        ac_regex = re.compile('@[\\w.]+@') ## Autoconf style match: @VARNAME@
+        cm_regex = re.compile('\\${[\\w.]+}')  ## CMake style match: ${VARNAME}
+        qt_regex = re.compile('qtTrId\\("[\\w.]+"\\)') ## Qt match: qtTrId("VARNAME")
 
         while start < len(text):
             ## Search for the first thing that we can translate
@@ -99,7 +99,7 @@ def transform(self, text):
                 match = cm_match
                 trid = cm_match.group(0)[2:-1]
             elif qt_match and (qt_start < ac_start) and (qt_start < cm_start):
-                match = cm_match
+                match = qt_match
                 trid = qt_match.group(0)[8:-2] ## TODO: Won't handle whitespace well.
             else:
                 break