diff --git a/.github/actions/build/action.yml b/.github/actions/build/action.yml
index 6714369155f..8fbff2d23df 100644
--- a/.github/actions/build/action.yml
+++ b/.github/actions/build/action.yml
@@ -20,6 +20,8 @@ runs:
           ${{ inputs.generator && format('-G "{0}"', inputs.generator) || '' }} \
           -DCMAKE_TOOLCHAIN_FILE:FILEPATH=build/generators/conan_toolchain.cmake \
           -DCMAKE_BUILD_TYPE=${{ inputs.configuration }} \
+          -Dassert=TRUE \
+          -Dwerr=TRUE \
           -Dtests=TRUE \
           -Dxrpld=TRUE \
           ${{ inputs.cmake-args }} \
diff --git a/.github/workflows/nix.yml b/.github/workflows/nix.yml
index 95cb84264ea..4ea058d7dc3 100644
--- a/.github/workflows/nix.yml
+++ b/.github/workflows/nix.yml
@@ -68,6 +68,8 @@ jobs:
       - name: check environment
         run: |
           echo ${PATH} | tr ':' '\n'
+          lsb_release -a || true
+          ${{ matrix.profile.cc }} --version
           conan --version
           cmake --version
           env | sort
diff --git a/cmake/RippledCore.cmake b/cmake/RippledCore.cmake
index c37971befdb..fc0576872a5 100644
--- a/cmake/RippledCore.cmake
+++ b/cmake/RippledCore.cmake
@@ -9,6 +9,7 @@ include(target_protobuf_sources)
 # define a bunch of `static const` variables with the same names,
 # so we just build them as a separate library.
 add_library(xrpl.libpb)
+set_target_properties(xrpl.libpb PROPERTIES UNITY_BUILD OFF)
 target_protobuf_sources(xrpl.libpb xrpl/proto
   LANGUAGE cpp
   IMPORT_DIRS include/xrpl/proto
@@ -49,7 +50,9 @@ target_link_libraries(xrpl.libpb
 
 # TODO: Clean up the number of library targets later.
 add_library(xrpl.imports.main INTERFACE)
-target_link_libraries(xrpl.imports.main INTERFACE
+
+target_link_libraries(xrpl.imports.main
+  INTERFACE
     LibArchive::LibArchive
     OpenSSL::Crypto
     Ripple::boost
@@ -59,7 +62,9 @@ target_link_libraries(xrpl.imports.main INTERFACE
     date::date
     ed25519::ed25519
     secp256k1::secp256k1
+    xrpl.libpb
     xxHash::xxhash
+    $<$<BOOL:${voidstar}>:antithesis-sdk-cpp>
 )
 
 include(add_module)
@@ -100,9 +105,6 @@ target_link_libraries(xrpl.libxrpl.server PUBLIC xrpl.libxrpl.protocol)
 
 add_library(xrpl.libxrpl)
 set_target_properties(xrpl.libxrpl PROPERTIES OUTPUT_NAME xrpl)
-if(unity)
-  set_target_properties(xrpl.libxrpl PROPERTIES UNITY_BUILD ON)
-endif()
 
 add_library(xrpl::libxrpl ALIAS xrpl.libxrpl)
 
@@ -130,39 +132,8 @@ target_link_modules(xrpl PUBLIC
 #     $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
 #     $<INSTALL_INTERFACE:include>)
 
-target_compile_definitions(xrpl.libxrpl
-  PUBLIC
-    BOOST_ASIO_USE_TS_EXECUTOR_AS_DEFAULT
-    BOOST_CONTAINER_FWD_BAD_DEQUE
-    HAS_UNCAUGHT_EXCEPTIONS=1)
-
-target_compile_options(xrpl.libxrpl
-  PUBLIC
-    $<$<BOOL:${is_gcc}>:-Wno-maybe-uninitialized>
-    $<$<BOOL:${voidstar}>:-DENABLE_VOIDSTAR>
-)
-
-target_link_libraries(xrpl.libxrpl
-  PUBLIC
-    LibArchive::LibArchive
-    OpenSSL::Crypto
-    Ripple::boost
-    Ripple::opts
-    Ripple::syslibs
-    absl::random_random
-    date::date
-    ed25519::ed25519
-    secp256k1::secp256k1
-    xrpl.libpb
-    xxHash::xxhash
-    $<$<BOOL:${voidstar}>:antithesis-sdk-cpp>
-)
-
 if(xrpld)
   add_executable(rippled)
-  if(unity)
-    set_target_properties(rippled PROPERTIES UNITY_BUILD ON)
-  endif()
   if(tests)
     target_compile_definitions(rippled PUBLIC ENABLE_TESTS)
   endif()
diff --git a/cmake/RippledInterface.cmake b/cmake/RippledInterface.cmake
index 56d36a528ff..85e27172712 100644
--- a/cmake/RippledInterface.cmake
+++ b/cmake/RippledInterface.cmake
@@ -7,6 +7,9 @@ add_library (Ripple::opts ALIAS opts)
 target_compile_definitions (opts
   INTERFACE
     BOOST_ASIO_DISABLE_HANDLER_TYPE_REQUIREMENTS
+    BOOST_ASIO_USE_TS_EXECUTOR_AS_DEFAULT
+    BOOST_CONTAINER_FWD_BAD_DEQUE
+    HAS_UNCAUGHT_EXCEPTIONS=1
     $<$<BOOL:${boost_show_deprecated}>:
       BOOST_ASIO_NO_DEPRECATED
       BOOST_FILESYSTEM_NO_DEPRECATED
@@ -18,10 +21,12 @@ target_compile_definitions (opts
     >
     $<$<BOOL:${beast_no_unit_test_inline}>:BEAST_NO_UNIT_TEST_INLINE=1>
     $<$<BOOL:${beast_disable_autolink}>:BEAST_DONT_AUTOLINK_TO_WIN32_LIBRARIES=1>
-    $<$<BOOL:${single_io_service_thread}>:RIPPLE_SINGLE_IO_SERVICE_THREAD=1>)
+    $<$<BOOL:${single_io_service_thread}>:RIPPLE_SINGLE_IO_SERVICE_THREAD=1>
+    $<$<BOOL:${voidstar}>:ENABLE_VOIDSTAR>)
 target_compile_options (opts
   INTERFACE
     $<$<AND:$<BOOL:${is_gcc}>,$<COMPILE_LANGUAGE:CXX>>:-Wsuggest-override>
+    $<$<BOOL:${is_gcc}>:-Wno-maybe-uninitialized>
     $<$<BOOL:${perf}>:-fno-omit-frame-pointer>
     $<$<AND:$<BOOL:${is_gcc}>,$<BOOL:${coverage}>>:-g --coverage -fprofile-abs-path>
     $<$<AND:$<BOOL:${is_clang}>,$<BOOL:${coverage}>>:-g --coverage>
diff --git a/cmake/RippledSettings.cmake b/cmake/RippledSettings.cmake
index 3eeebed428c..58877e1885b 100644
--- a/cmake/RippledSettings.cmake
+++ b/cmake/RippledSettings.cmake
@@ -17,6 +17,7 @@ if(unity)
   if(NOT is_ci)
     set(CMAKE_UNITY_BUILD_BATCH_SIZE 15 CACHE STRING "")
   endif()
+  set(CMAKE_UNITY_BUILD ON CACHE BOOL "Do a unity build")
 endif()
 if(is_clang AND is_linux)
   option(voidstar "Enable Antithesis instrumentation." OFF)
diff --git a/src/xrpld/app/paths/detail/DirectStep.cpp b/src/xrpld/app/paths/detail/DirectStep.cpp
index 95e64b337bc..ffd500009e7 100644
--- a/src/xrpld/app/paths/detail/DirectStep.cpp
+++ b/src/xrpld/app/paths/detail/DirectStep.cpp
@@ -336,7 +336,7 @@ DirectIPaymentStep::quality(ReadView const& sb, QualityDirection qDir) const
     if (!sle)
         return QUALITY_ONE;
 
-    auto const& field = [this, qDir]() -> SF_UINT32 const& {
+    auto const& field = [&, this]() -> SF_UINT32 const& {
         if (qDir == QualityDirection::in)
         {
             // compute dst quality in