diff --git a/ios/ci.sh b/ios/ci.sh
index 2222ee689c..cf461427bd 100755
--- a/ios/ci.sh
+++ b/ios/ci.sh
@@ -22,14 +22,13 @@ builder_parse "$@"
 mac_verify_on_mac
 
 function do_build() {
-  ./build.sh                         clean configure build:engine build:app --sim-artifact
+  builder_launch /ios/build.sh                         clean configure build:engine build:app --sim-artifact
 
   # Since we may be disabling it via build-agent environment variable at times...
   if [ ! -z "${RELEASE_OEM+x}" ]; then
-    "$KEYMAN_ROOT/oem/firstvoices/ios/build.sh"  clean configure build --sim-artifact
+    builder_launch /oem/firstvoices/ios/build.sh  clean configure build --sim-artifact
   fi
 }
 
 builder_run_action build          do_build
-# The script called below isn't builder-based, but... eh, "if it ain't broke."
-builder_run_action prep_release   tools/prepRelease.sh
\ No newline at end of file
+builder_run_action prep_release   builder_launch /ios/tools/prepRelease.sh
\ No newline at end of file
diff --git a/resources/teamcity/android/android-actions.inc.sh b/resources/teamcity/android/android-actions.inc.sh
index c125a9bfe7..936fafab1b 100755
--- a/resources/teamcity/android/android-actions.inc.sh
+++ b/resources/teamcity/android/android-actions.inc.sh
@@ -4,17 +4,16 @@
 android_clean_action() {
   builder_echo start "clean" "Cleaning artifact directories"
   # shellcheck disable=SC2154
-  "${KEYMAN_ROOT}/android/build.sh" clean
+  builder_launch /android/build.sh clean
   builder_echo end "clean" success "Finished cleaning artifact directories"
 }
 
 android_build_action() {
   builder_echo start "build" "Building Keyman for Android"
   local TARGETS="$1"
-  local ARGS="$2"
 
   # REVIEW: is it deliberate that we `configure` all targets but only `build,test` `$TARGETS`?
-  "${KEYMAN_ROOT}/android/build.sh" configure build,test:"${TARGETS}" ${ARGS}
+  builder_launch /android/build.sh configure build,test:"${TARGETS}"
   builder_echo end "build" success "Finished building Keyman for Android"
 }
 
@@ -22,7 +21,7 @@ android_publish_symbols() {
   local PUBTARGETS="$1"
   builder_echo start "publish to Sentry" "Publishing release to Sentry"
 
-  "${KEYMAN_ROOT}/android/build.sh" "publish-symbols:${PUBTARGETS}"
+  builder_launch /android/build.sh "publish-symbols:${PUBTARGETS}"
 
   builder_echo end "publish to Sentry" success "Finished publishing release to Sentry"
 }
diff --git a/resources/teamcity/android/keyman-android-release.sh b/resources/teamcity/android/keyman-android-release.sh
index c385f5cd42..e9a136dcb0 100755
--- a/resources/teamcity/android/keyman-android-release.sh
+++ b/resources/teamcity/android/keyman-android-release.sh
@@ -44,7 +44,7 @@ cd "${KEYMAN_ROOT}/android"
 function _create_zip_archive() {
   builder_echo start "archive" "Copying release artifacts to upload/ and creating zip"
 
-  "${KEYMAN_ROOT}/android/build.sh" archive
+  builder_launch /android/build.sh archive
 
   builder_echo end "archive" success "Finished copying release artifacts to upload/ and creating zip"
 }
@@ -66,7 +66,7 @@ function _publish_to_playstore() {
   local PUBTARGETS="$1"
   builder_echo start "publish to Google Play Store" "Publishing release to Google Play Store"
 
-  "${KEYMAN_ROOT}/android/build.sh" "publish-play-store:${PUBTARGETS}"
+  builder_launch /android/build.sh "publish-play-store:${PUBTARGETS}"
 
   builder_echo end "publish to Google Play Store" success "Finished publishing release to Google Play Store"
 }
@@ -107,10 +107,10 @@ fi
 
 if builder_has_action all; then
   android_clean_action
-  android_build_action "${TARGETS}" --release
+  android_build_action "${TARGETS}"
   do_publish
 else
   builder_run_action  clean    android_clean_action
-  builder_run_action  build    android_build_action "${TARGETS}" --release
+  builder_run_action  build    android_build_action "${TARGETS}"
   builder_run_action  publish  do_publish
 fi
diff --git a/resources/teamcity/android/keyman-android-test-samples.sh b/resources/teamcity/android/keyman-android-test-samples.sh
index 58e1a7a1d8..675d339dcf 100755
--- a/resources/teamcity/android/keyman-android-test-samples.sh
+++ b/resources/teamcity/android/keyman-android-test-samples.sh
@@ -29,9 +29,7 @@ builder_parse "$@"
 cd "${KEYMAN_ROOT}/android"
 
 function do_build() {
-  "${KEYMAN_ROOT}/android/build.sh" \
-    configure,build:engine,sample1,sample2,keyboardharness \
-    --debug
+  builder_launch /android/build.sh  configure,build:engine,sample1,sample2,keyboardharness
 }
 
 if builder_has_action all; then
diff --git a/resources/teamcity/android/keyman-android-test.sh b/resources/teamcity/android/keyman-android-test.sh
index 3a48154eee..4060b01075 100755
--- a/resources/teamcity/android/keyman-android-test.sh
+++ b/resources/teamcity/android/keyman-android-test.sh
@@ -39,10 +39,10 @@ fi
 
 if builder_has_action all; then
   android_clean_action
-  android_build_action "${TARGETS}" --debug
-  android_publish_symbols "${TARGETS}" --debug
+  android_build_action "${TARGETS}"
+  android_publish_symbols "${TARGETS}"
 else
   builder_run_action  clean     android_clean_action
-  builder_run_action  build     android_build_action "${TARGETS}" --debug
-  builder_run_action  publish   android_publish_symbols "${TARGETS}" --debug
+  builder_run_action  build     android_build_action "${TARGETS}"
+  builder_run_action  publish   android_publish_symbols "${TARGETS}"
 fi
diff --git a/resources/teamcity/common/common-test-common-web.sh b/resources/teamcity/common/common-test-common-web.sh
index 31961f4aea..f865249fbc 100755
--- a/resources/teamcity/common/common-test-common-web.sh
+++ b/resources/teamcity/common/common-test-common-web.sh
@@ -18,4 +18,4 @@ builder_describe \
 
 builder_parse "$@"
 
-builder_run_action all  "${KEYMAN_ROOT}/common/web/build.sh" configure build test
+builder_run_action all  builder_launch /common/web/build.sh configure build test
diff --git a/resources/teamcity/common/common-test-common.sh b/resources/teamcity/common/common-test-common.sh
index e238236c66..b334724a21 100755
--- a/resources/teamcity/common/common-test-common.sh
+++ b/resources/teamcity/common/common-test-common.sh
@@ -18,4 +18,4 @@ builder_describe \
 
 builder_parse "$@"
 
-builder_run_action all  "${KEYMAN_ROOT}/common/build.sh" configure build test
+builder_run_action all  builder_launch /common/build.sh configure build test
diff --git a/resources/teamcity/common/common-test-core-wasm.sh b/resources/teamcity/common/common-test-core-wasm.sh
index 2764aaa247..65f13409bc 100755
--- a/resources/teamcity/common/common-test-core-wasm.sh
+++ b/resources/teamcity/common/common-test-core-wasm.sh
@@ -19,4 +19,4 @@ builder_describe \
 
 builder_parse "$@"
 
-builder_run_action all  "${KEYMAN_ROOT}/core/build.sh" configure,build,test:wasm
+builder_run_action all  builder_launch /core/build.sh configure,build,test:wasm
diff --git a/resources/teamcity/developer/keyman-developer-release.sh b/resources/teamcity/developer/keyman-developer-release.sh
index 7bf2e02553..ea990efc4d 100755
--- a/resources/teamcity/developer/keyman-developer-release.sh
+++ b/resources/teamcity/developer/keyman-developer-release.sh
@@ -41,7 +41,7 @@ cd "${KEYMAN_ROOT}/developer/src"
 function _build_developer() {
   builder_echo start "build developer" "Building Keyman Developer"
 
-  ./build.sh configure build test api publish
+  builder_launch /developer/src/build.sh configure build test api publish
 
   builder_echo end "build developer" success "Finished building Keyman Developer"
 }
@@ -49,7 +49,7 @@ function _build_developer() {
 function _build_testkeyboards() {
   builder_echo start "build testkeyboards" "Building test keyboards"
 
-  "${KEYMAN_ROOT}/common/test/keyboards/build.sh"
+  builder_launch /common/test/keyboards/build.sh
 
   builder_echo end "build testkeyboards" success "Finished building test keyboards"
 }
@@ -57,7 +57,7 @@ function _build_testkeyboards() {
 function _publish_sentry() {
   builder_echo start "publish sentry" "Publishing debug information files to Sentry"
 
-  "${KEYMAN_ROOT}/developer/src/tools/sentry-upload-difs.sh"
+  builder_launch /developer/src/tools/sentry-upload-difs.sh
 
   builder_echo end "publish sentry" success "Finished publishing debug information files to Sentry"
 }
diff --git a/resources/teamcity/developer/keyman-developer-test-linux-macos.sh b/resources/teamcity/developer/keyman-developer-test-linux-macos.sh
index 90fa341021..7eb8106b37 100755
--- a/resources/teamcity/developer/keyman-developer-test-linux-macos.sh
+++ b/resources/teamcity/developer/keyman-developer-test-linux-macos.sh
@@ -32,7 +32,7 @@ cd "${KEYMAN_ROOT}/developer/src"
 function build_developer_action() {
   builder_echo start "build developer" "Building Keyman Developer"
 
-  "${KEYMAN_ROOT}/developer/src/build.sh" configure build test
+  builder_launch /developer/src/build.sh configure build test
 
   builder_echo end "build developer" success "Finished building Keyman Developer"
 }
diff --git a/resources/teamcity/developer/keyman-developer-test-windows.sh b/resources/teamcity/developer/keyman-developer-test-windows.sh
index 5bd7961c46..ed5b634274 100755
--- a/resources/teamcity/developer/keyman-developer-test-windows.sh
+++ b/resources/teamcity/developer/keyman-developer-test-windows.sh
@@ -41,7 +41,7 @@ function build_developer_action() {
 function _build_developer() {
   builder_echo start "build developer" "Building and testing Keyman Developer"
 
-  ./build.sh configure build test
+  builder_launch /developer/src/build.sh configure build test
 
   builder_echo end "build developer" success "Finished building and testing Keyman Developer"
 }
@@ -49,19 +49,19 @@ function _build_developer() {
 function _build_testkeyboards() {
   builder_echo start "build testkeyboards" "Building test keyboards"
 
-  "${KEYMAN_ROOT}/common/test/keyboards/build.sh" --zip-source --index
+  builder_launch /common/test/keyboards/build.sh --zip-source --index
 
   builder_echo end "build testkeyboards" success "Finished building test keyboards"
 }
 
 function publish_sentry_action() {
   builder_echo start "publish" "publish modules locally and prep api"
-  ./build.sh api publish
+  builder_launch /developer/src/build.sh api publish
   builder_echo end "publish" "publish modules locally and prep api"
 
   builder_echo start "publish sentry" "Publishing debug information files to Sentry"
   # TODO: move this into build.sh publish?
-  "${KEYMAN_ROOT}/developer/src/tools/sentry-upload-difs.sh"
+  builder_launch /developer/src/tools/sentry-upload-difs.sh
   builder_echo end "publish sentry" success "Finished publishing debug information files to Sentry"
 }
 
diff --git a/resources/teamcity/ios/keyman-ios-test-samples.sh b/resources/teamcity/ios/keyman-ios-test-samples.sh
index fb109f3a2a..8d4587dae8 100755
--- a/resources/teamcity/ios/keyman-ios-test-samples.sh
+++ b/resources/teamcity/ios/keyman-ios-test-samples.sh
@@ -25,13 +25,13 @@ cd "${KEYMAN_ROOT}/ios"
 
 function _build_sample1() {
   builder_echo start "kmsample1" "Building KMSample1"
-  "${KEYMAN_ROOT}/ios/samples/KMSample1/build.sh" clean configure build --debug
+  builder_launch /ios/samples/KMSample1/build.sh clean configure build
   builder_echo end "kmsample1" success "Finished building KMSample1"
 }
 
 function _build_sample2() {
   builder_echo start "kmsample2" "Building KMSample2"
-  "${KEYMAN_ROOT}/ios/samples/KMSample2/build.sh" clean configure build --debug
+  builder_launch /ios/samples/KMSample2/build.sh clean configure build
   builder_echo end "kmsample2" success "Finished building KMSample2"
 }
 
diff --git a/resources/teamcity/linux/keyman-linux-test-integration.sh b/resources/teamcity/linux/keyman-linux-test-integration.sh
index 127f08d796..fdb94e4255 100755
--- a/resources/teamcity/linux/keyman-linux-test-integration.sh
+++ b/resources/teamcity/linux/keyman-linux-test-integration.sh
@@ -33,7 +33,7 @@ cd "${KEYMAN_ROOT}/linux"
 function clean_action() {
   builder_heading "Cleaning up"
   # shellcheck disable=SC2154
-  "${KEYMAN_ROOT}/linux/build.sh" clean
+  builder_launch /linux/build.sh clean
 }
 
 if builder_has_action all; then
diff --git a/resources/teamcity/linux/linux-actions.inc.sh b/resources/teamcity/linux/linux-actions.inc.sh
index 0b96f4c07c..ab464e4a25 100644
--- a/resources/teamcity/linux/linux-actions.inc.sh
+++ b/resources/teamcity/linux/linux-actions.inc.sh
@@ -38,7 +38,7 @@ linux_additional_test_dependencies_action() {
 linux_build_action() {
   INSTALLDIR="$(mktemp -d)"
   # shellcheck disable=SC2068
-  DESTDIR="${INSTALLDIR}" "${KEYMAN_ROOT}/linux/build.sh" clean configure build install $@
+  DESTDIR="${INSTALLDIR}" builder_launch /linux/build.sh clean configure build install $@
 }
 
 # Run unit tests for Keyman for Linux.
@@ -52,6 +52,6 @@ linux_unit_tests_action() {
 
   export NO_AT_BRIDGE=1
   # shellcheck disable=SC2068
-  "${KEYMAN_ROOT}/linux/build.sh" test $@
+  builder_launch /linux/build.sh test $@
   builder_echo endTest unit_tests success "Finished running unit tests"
 }
diff --git a/resources/teamcity/macos/macos-actions.inc.sh b/resources/teamcity/macos/macos-actions.inc.sh
index 832de1aebe..efb5336904 100755
--- a/resources/teamcity/macos/macos-actions.inc.sh
+++ b/resources/teamcity/macos/macos-actions.inc.sh
@@ -9,6 +9,6 @@ macos_clean_action() {
 macos_build_action() {
   builder_echo start "build" "Building Keyman for macOS"
   # shellcheck disable=SC2154
-  "${KEYMAN_ROOT}/mac/build.sh" configure build test publish
+  builder_launch /mac/build.sh configure build test publish
   builder_echo end "build" success "Finished building Keyman for macOS"
 }
diff --git a/resources/teamcity/triggers/trigger-release-builds.sh b/resources/teamcity/triggers/trigger-release-builds.sh
index f914a804f4..460bddf306 100755
--- a/resources/teamcity/triggers/trigger-release-builds.sh
+++ b/resources/teamcity/triggers/trigger-release-builds.sh
@@ -98,7 +98,7 @@ echo "trigger-release-builds.sh: building resources/build/version"
 pushd "$KEYMAN_ROOT"
 npm ci
 
-"$KEYMAN_ROOT/resources/build/version/build.sh"
+builder_launch /resources/build/version/build.sh
 
 echo "trigger-release-builds.sh: running resources/build/version"
 pushd "$KEYMAN_ROOT"
diff --git a/resources/teamcity/web/web-actions.inc.sh b/resources/teamcity/web/web-actions.inc.sh
index 437254b975..324fa81663 100644
--- a/resources/teamcity/web/web-actions.inc.sh
+++ b/resources/teamcity/web/web-actions.inc.sh
@@ -52,7 +52,7 @@ web_test_action() {
     trap ERR
   fi
 
-  "${KEYMAN_ROOT}/web/build.sh" coverage
+  builder_launch /web/build.sh coverage
 
   builder_echo end web_test success "Finished running tests for native KeymanWeb"
 }
diff --git a/resources/teamcity/windows/keyman-windows-release.sh b/resources/teamcity/windows/keyman-windows-release.sh
index 40e78866f1..d21b4ce916 100755
--- a/resources/teamcity/windows/keyman-windows-release.sh
+++ b/resources/teamcity/windows/keyman-windows-release.sh
@@ -102,7 +102,7 @@ function windows_publish_action() {
   export RSYNC_HOST
   export RSYNC_ROOT
 
-  "${KEYMAN_ROOT}/windows/build.sh" publish
+  builder_launch /windows/build.sh publish
   windows_upload_symbols_to_sentry
   ba_win_download_symbol_server_index
   ba_win_publish_new_symbols
diff --git a/resources/teamcity/windows/keyman-windows-test.sh b/resources/teamcity/windows/keyman-windows-test.sh
index fc83b5c362..a0b74f86e5 100755
--- a/resources/teamcity/windows/keyman-windows-test.sh
+++ b/resources/teamcity/windows/keyman-windows-test.sh
@@ -37,7 +37,7 @@ fi
 
 function windows_publish_action() {
   builder_echo start "publish windows" "Publishing Keyman for Windows"
-  "${KEYMAN_ROOT}/windows/build.sh" publish
+  builder_launch /windows/build.sh publish
   windows_upload_symbols_to_sentry
   builder_echo end "publish windows" success "Finished publishing Keyman for Windows"
 }
diff --git a/resources/teamcity/windows/windows-actions.inc.sh b/resources/teamcity/windows/windows-actions.inc.sh
index 3b5699447c..7f99964806 100755
--- a/resources/teamcity/windows/windows-actions.inc.sh
+++ b/resources/teamcity/windows/windows-actions.inc.sh
@@ -4,16 +4,16 @@
 windows_build_action() {
   builder_echo start "build windows" "Building Keyman for Windows"
   # shellcheck disable=SC2154
-  "${KEYMAN_ROOT}/windows/build.sh" configure build
+  builder_launch /windows/build.sh configure build
   builder_echo end "build windows" success "Finished building Keyman for Windows"
 }
 
 windows_test_action() {
   builder_echo start "test windows" "Running Keyman for Windows tests"
-  "${KEYMAN_ROOT}/windows/build.sh" test
+  builder_launch /windows/build.sh test
   builder_echo end "test windows" success "Finished running Keyman for Windows tests"
 }
 
 windows_upload_symbols_to_sentry() {
-  "${KEYMAN_ROOT}/windows/src/buildtools/sentry-upload-difs.sh"
+  builder_launch /windows/src/buildtools/sentry-upload-difs.sh
 }
diff --git a/web/build.sh b/web/build.sh
index 4dc5189353..e426108402 100755
--- a/web/build.sh
+++ b/web/build.sh
@@ -204,7 +204,7 @@ builder_run_action build:_all build_action
 
 # Run tests
 builder_run_child_actions test
-builder_run_action test:_all ./test.sh
+builder_run_action test:_all builder_launch /web/test.sh
 
 function do_test_help() {
   check-markdown  "$KEYMAN_ROOT/web/docs/engine"
diff --git a/web/ci.sh b/web/ci.sh
index 02545cf447..9008d56a50 100755
--- a/web/ci.sh
+++ b/web/ci.sh
@@ -64,7 +64,7 @@ function build_action() {
   #               - also useful when validating this script on a local dev machine!
   # - build:      then do the ACTUAL build.
   # one option:
-  ./build.sh configure clean build
+  builder_launch /web/build.sh configure clean build
 
   if builder_is_ci_build && builder_is_ci_build_level_release; then
     # Upload the sentry-configuration engine used by the mobile apps to sentry
@@ -81,7 +81,7 @@ function build_action() {
 }
 
 function test_action() {
-  ./build.sh test
+  builder_launch /web/build.sh test
 }
 
 function post_test_action() {
diff --git a/web/src/engine/osk/gesture-processor/build.sh b/web/src/engine/osk/gesture-processor/build.sh
index 53c50c3d39..77c5e3454e 100755
--- a/web/src/engine/osk/gesture-processor/build.sh
+++ b/web/src/engine/osk/gesture-processor/build.sh
@@ -60,6 +60,6 @@ function do_test_tools() {
 builder_run_action configure     do_configure
 builder_run_action clean         rm -rf build/
 builder_run_action build:module  do_build_module
-builder_run_action build:tools   src/tools/build.sh build
+builder_run_action build:tools   builder_launch /web/src/engine/osk/gesture-processor/src/tools/build.sh build
 builder_run_action test:module   test-headless-typescript "${SUBPROJECT_NAME}"
 builder_run_action test:tools    do_test_tools
diff --git a/windows/src/desktop/build.sh b/windows/src/desktop/build.sh
index aea7a2d8f9..6626a2046f 100755
--- a/windows/src/desktop/build.sh
+++ b/windows/src/desktop/build.sh
@@ -44,7 +44,7 @@ function do_prepublish() {
   if [[ ! -f "$DEVTOOLS" ]]; then
     # We'll build devtools here directly because we are before the configure /
     # build steps which would trigger it in via dependencies
-    "$KEYMAN_ROOT"/common/windows/delphi/tools/devtools/build.sh configure build prepublish
+    builder_launch /common/windows/delphi/tools/devtools/build.sh configure build prepublish
   fi
 
   #
@@ -54,7 +54,7 @@ function do_prepublish() {
   if [[ ! -f /common/windows/delphi/tools/test-klog/$WIN32_TARGET_PATH/test_klog.exe ]]; then
     # We'll build test_klog here directly because we are before the configure /
     # build steps which would trigger it in via dependencies
-    "$KEYMAN_ROOT"/common/windows/delphi/tools/test-klog/build.sh configure build prepublish
+    builder_launch /common/windows/delphi/tools/test-klog/build.sh configure build prepublish
   fi
 
   "$DEVTOOLS" -rt
diff --git a/windows/src/engine/tsysinfo/build.sh b/windows/src/engine/tsysinfo/build.sh
index 3e94f381ba..c478558660 100755
--- a/windows/src/engine/tsysinfo/build.sh
+++ b/windows/src/engine/tsysinfo/build.sh
@@ -36,7 +36,7 @@ function do_build() {
 
   # Embed tsysinfox64 into a resource; we have to do a special signcode for
   # tsysinfox64.exe as we embed the executable into tsysinfo.exe
-  ../tsysinfox64/build.sh publish --no-deps
+  builder_launch /windows/src/engine/tsysinfox64/build.sh publish
   cp "$WINDOWS_PROGRAM_ENGINE/tsysinfox64.exe" tsysinfox64.bin
   run_in_vs_env rc tsysinfo_x64.rc
   rm -f tsysinfox64.bin