diff --git a/scripts/_z-run b/scripts/_z-run
index fbe74ad..32186d8 100644
--- a/scripts/_z-run
+++ b/scripts/_z-run
@@ -1,6 +1,10 @@
 #!/dev/null
 
 
+&&== env-fallback __BUILD_VERSION 0.1.0
+&&== env-fallback __BUILD_QUICK false
+
+
 ::// workspace / ...
 ::// execute / ...
 ::// clients / ...
diff --git a/scripts/deploy.z-run b/scripts/deploy.z-run
index e44097b..df9a055 100644
--- a/scripts/deploy.z-run
+++ b/scripts/deploy.z-run
@@ -41,7 +41,7 @@
 	test -d ./.publish/
 	
 	
-	_build_version=0.1.0
+	_build_version="${__BUILD_VERSION}"
 	case "${_build_version}" in
 		( 0.0.0 | *.0 )
 			_build_release=false
diff --git a/scripts/go.z-run b/scripts/go.z-run
index 4ff2ffd..ed2d0fb 100644
--- a/scripts/go.z-run
+++ b/scripts/go.z-run
@@ -4,7 +4,7 @@
 
 
 << go / build / all / release / quick
-	export -- _BUILD_QUICK=true
+	export -- __BUILD_QUICK=true
 	"${ZRUN[@]}" ':: go / build / archiver / release' "${@}"
 	"${ZRUN[@]}" ':: go / build / server / release' "${@}"
 	"${ZRUN[@]}" ':: go / build / server-dummy / release' "${@}"
@@ -32,7 +32,7 @@
 
 
 << go / build / server / release / quick
-	export -- _BUILD_QUICK=true
+	export -- __BUILD_QUICK=true
 	exec -- "${ZRUN[@]}" ':: go / build / server / release' "${@}"
 !!
 
@@ -45,7 +45,7 @@
 	_flags=(
 			-tags netgo
 		)
-	if test -z "${_BUILD_QUICK:-}" ; then
+	if test -z "${__BUILD_QUICK:-}" ; then
 		_flags+=(
 				-gcflags 'all=-l=4'
 				-ldflags 'all=-s'
@@ -86,7 +86,7 @@
 
 
 << go / build / archiver / release / quick
-	export -- _BUILD_QUICK=true
+	export -- __BUILD_QUICK=true
 	exec -- "${ZRUN[@]}" ':: go / build / archiver / release' "${@}"
 !!
 
@@ -99,7 +99,7 @@
 	_flags=(
 			-tags netgo
 		)
-	if test -z "${_BUILD_QUICK:-}" ; then
+	if test -z "${__BUILD_QUICK:-}" ; then
 		_flags+=(
 				-gcflags 'all=-l=4'
 				-ldflags 'all=-s'
@@ -182,7 +182,7 @@
 
 
 << go / build / server-dummy / release / quick
-	export -- _BUILD_QUICK=true
+	export -- __BUILD_QUICK=true
 	exec -- "${ZRUN[@]}" ':: go / build / server-dummy / release' "${@}"
 !!
 
@@ -195,7 +195,7 @@
 	_flags=(
 			-tags netgo
 		)
-	if test -z "${_BUILD_QUICK:-}" ; then
+	if test -z "${__BUILD_QUICK:-}" ; then
 		_flags+=(
 				-gcflags 'all=-l=4'
 				-ldflags 'all=-s'