diff --git a/run b/run
index 19dcec2..244e459 100755
--- a/run
+++ b/run
@@ -114,7 +114,7 @@ fullbuild() {
   popd
 }
 
-step0() {
+step00() {
   git checkout $MERGE_WASI_BOOTSTRAP
 
   git revert --no-edit $REMOVE_STAGE1
@@ -144,7 +144,7 @@ step0() {
   echo "Zig bootstrapped from selfhosted."
 }
 
-step1() {
+step01() {
   local TO="$BOUNDFN"
   local TO_="$BOUNDFN_"
   echo "Generating zig1.wasm.zst for $TO_"
@@ -162,7 +162,7 @@ step1() {
   echo "zig1.wasm.zst was built for BoundFn hack"
 }
 
-step2() {
+step02() {
   local FROM_="$BOUNDFN_"
   local TO="$C_AARCH64"
   local TO_="$C_AARCH64_"
@@ -180,7 +180,7 @@ step2() {
   echo "zig1.wasm.zst was built for C-aarch64 backend"
 }
 
-step3() {
+step03() {
   local FROM_="$C_AARCH64_"
   local TO="$CALL_OPTIONS"
   local TO_="$CALL_OPTIONS_"
@@ -198,7 +198,7 @@ step3() {
   echo "zig1.wasm updated for $TO"
 }
 
-step4() {
+step04() {
   local FROM_="$CALL_OPTIONS_"
   local TO="$CALL_USAGES"
   local TO_="$CALL_USAGES_"
@@ -217,7 +217,7 @@ step4() {
   echo "zig1.wasm updated for $TO_"
 }
 
-step5() {
+step05() {
   local FROM_="$CALL_USAGES_"
   local TO="$BUILTIN_TYPE"
   local TO_="$BUILTIN_TYPE_"
@@ -233,7 +233,7 @@ step5() {
   }
 }
 
-step6() {
+step06() {
   local FROM_="$BUILTIN_TYPE_"
   local TO="$REMOVE_BUILTIN_TYPE"
   local TO_="$REMOVE_BUILTIN_TYPE_"
@@ -249,12 +249,12 @@ step6() {
   echo "zig1.wasm updated for $TO_"
 }
 
-step7() {
+step07() {
   local FROM_="$REMOVE_BUILTIN_TYPE_"
   local TO="$BUILTINS_4TO2"
   local TO_="$BUILTINS_4TO2_"
 
-  echo "Updating zig1.wasm from $FROM_ -> $TO_ in ../zig-$TO_"
+  echo "Building zig2 from $FROM_ -> $TO_ in ../zig-$TO_"
   rm -fr "../zig-$TO_"
   git archive --prefix=zig-$TO_/ $TO | tar -C .. -x
   {
@@ -263,20 +263,19 @@ step7() {
     cp ../zig-$FROM_/stage1/zig1.wasm stage1/zig1.wasm
 
     # same as "fullbuild", except the make target does not have "install"
+    rm -fr build
+    mkdir build
     {
-      rm -fr build
-      mkdir build
       pushd build
       CC=clang-15 CXX=clang++-15 cmake ..
       make -j"$(nproc)"
       popd
     }
-    build/zig2 build update-zig1
     popd
   }
 }
 
-step8() {
+step08() {
   local FROM_="$BUILTINS_4TO2_"
   local TO="$BUILTINS_4TO2_USES"
   local TO_="$BUILTINS_4TO2_USES_"
@@ -286,26 +285,26 @@ step8() {
   git archive --prefix=zig-$TO_/ $TO | tar -C .. -x
   {
     pushd "../zig-$TO_"
-    cp ../zig-$FROM_/stage1/zig1.wasm stage1/zig1.wasm
-    fullbuild
-    build/stage3/bin/zig build update-zig1
+    ../zig-$FROM_/build/zig2 build update-zig1
     popd
   }
 }
 
 if [[ "${BASH_SOURCE[0]}" == "${0}" ]]; then
   set -xeuo pipefail
-  step=${1:-step0}
+  step=${1:-step00}
   step=${step#step}
 
   # works:
-  if [[ "$step" -le 0 ]]; then step0; fi
-  if [[ "$step" -le 1 ]]; then step1; fi
-  if [[ "$step" -le 2 ]]; then step2; fi
-  if [[ "$step" -le 3 ]]; then step3; fi
-  if [[ "$step" -le 4 ]]; then step4; fi
-  if [[ "$step" -le 5 ]]; then step5; fi
-  if [[ "$step" -le 6 ]]; then step6; fi
-  if [[ "$step" -le 7 ]]; then step7; fi
-  if [[ "$step" -le 8 ]]; then step8; fi
+  if [[ "$step" -le 0 ]]; then step00; fi
+  if [[ "$step" -le 1 ]]; then step01; fi
+  if [[ "$step" -le 2 ]]; then step02; fi
+  if [[ "$step" -le 3 ]]; then step03; fi
+  if [[ "$step" -le 4 ]]; then step04; fi
+  if [[ "$step" -le 5 ]]; then step05; fi
+  if [[ "$step" -le 6 ]]; then step06; fi
+  if [[ "$step" -le 7 ]]; then step07; fi
+
+  # not:
+  if [[ "$step" -le 8 ]]; then step08; fi
 fi