diff --git a/archive/1.vm/build0 b/archive/1.vm/build0
index 03ac8180..fcee74d3 100755
--- a/archive/1.vm/build0
+++ b/archive/1.vm/build0
@@ -4,7 +4,7 @@
 set -v
 set -e  # stop immediately on error
 
-cd ../../tools
+cd ../../linux/bootstrap/tools
   # auto-generate various lists (ending in '_list' by convention) {
   # list of function declarations, so I can define them in any order
   grep -h "^[^ #].*) {" tangle.cc  |sed 's/ {.*/;/'  > tangle.function_list
@@ -14,7 +14,7 @@ cd ../../tools
   # }
   g++ -std=c++98 -g -O3 tangle.cc -o tangle
   ./tangle test
-cd ../archive/1.vm
+cd ../../../archive/1.vm
 
 cd termbox
   gcc -g -O2 -c termbox.c
@@ -22,7 +22,7 @@ cd termbox
   ar rcs libtermbox.a *.o
 cd ..
 
-../../tools/tangle [0-9]*.cc > mu.cc
+../../linux/bootstrap/tools/tangle [0-9]*.cc > mu.cc
 # auto-generate function declarations, so I can define them in any order
 # functions start out unindented, have all args on the same line, and end in ') {'
 #
diff --git a/archive/1.vm/build1 b/archive/1.vm/build1
index 6d427c7a..accf949e 100755
--- a/archive/1.vm/build1
+++ b/archive/1.vm/build1
@@ -21,9 +21,9 @@ export CXXFLAGS="-std=c++98 $CFLAGS"  # CI has an ancient version; don't expect
 # (layers)   |        |
 #          tangle   $CXX
 
-$CXX $CFLAGS ../../tools/enumerate.cc -o ../../tools/enumerate
+$CXX $CFLAGS ../../linux/bootstrap/tools/enumerate.cc -o ../../linux/bootstrap/tools/enumerate
 
-cd ../../tools
+cd ../../linux/bootstrap/tools
   # auto-generate various lists (ending in '_list' by convention) {
   # list of function declarations, so I can define them in any order
   grep -h "^[^ #].*) {" tangle.cc  |sed 's/ {.*/;/'  > tangle.function_list
@@ -33,7 +33,7 @@ cd ../../tools
   # }
   $CXX $CXXFLAGS tangle.cc -o tangle
   ./tangle test
-cd ../archive/1.vm
+cd ../../../archive/1.vm
 
 cd termbox
   $CC $CFLAGS -c termbox.c
@@ -41,8 +41,8 @@ cd termbox
   ar rcs libtermbox.a *.o
 cd ..
 
-LAYERS=$(../../tools/enumerate --until $UNTIL_LAYER  |grep '\.cc$')
-../../tools/tangle $LAYERS  > mu.cc
+LAYERS=$(../../linux/bootstrap/tools/enumerate --until $UNTIL_LAYER  |grep '\.cc$')
+../../linux/bootstrap/tools/tangle $LAYERS  > mu.cc
 # auto-generate function declarations, so I can define them in any order
 # functions start out unindented, have all args on the same line, and end in ') {'
 #
@@ -55,5 +55,5 @@ $CXX $CXXFLAGS mu.cc termbox/libtermbox.a -o mu_bin
 
 ## [0-9]*.mu -> core.mu
 
-MU_LAYERS=$(../../tools/enumerate --until $UNTIL_LAYER  |grep '\.mu$') || exit 0  # ok if no .mu files
+MU_LAYERS=$(../../linux/bootstrap/tools/enumerate --until $UNTIL_LAYER  |grep '\.mu$') || exit 0  # ok if no .mu files
 cat $MU_LAYERS  > core.mu
diff --git a/archive/1.vm/build2 b/archive/1.vm/build2
index e0383fa5..be79b008 100755
--- a/archive/1.vm/build2
+++ b/archive/1.vm/build2
@@ -81,12 +81,12 @@ noisy_cd() {
   echo "-- `pwd`" >&2
 }
 
-older_than ../../tools/enumerate ../../tools/enumerate.cc && {
-  $CXX $CXXFLAGS ../../tools/enumerate.cc -o ../../tools/enumerate
+older_than ../../linux/bootstrap/tools/enumerate ../../linux/bootstrap/tools/enumerate.cc && {
+  $CXX $CXXFLAGS ../../linux/bootstrap/tools/enumerate.cc -o ../../linux/bootstrap/tools/enumerate
 }
 
-older_than ../../tools/tangle ../../tools/tangle.cc && {
-  noisy_cd ../../tools
+older_than ../../linux/bootstrap/tools/tangle ../../linux/bootstrap/tools/tangle.cc && {
+  noisy_cd ../../linux/bootstrap/tools
     # auto-generate various lists (ending in '_list' by convention) {
     # list of function declarations, so I can define them in any order
     grep -h "^[^ #].*) {" tangle.cc  |sed 's/ {.*/;/'  |update tangle.function_list
@@ -96,13 +96,13 @@ older_than ../../tools/tangle ../../tools/tangle.cc && {
     # }
     $CXX $CFLAGS tangle.cc -o tangle
     ./tangle test
-  noisy_cd ../archive/1.vm  # no effect; just to show us returning to the parent directory
+  noisy_cd ../../../archive/1.vm  # no effect; just to show us returning to the parent directory
 }
 
-LAYERS=$(../../tools/enumerate --until $UNTIL_LAYER  |grep '\.cc$')
-older_than mu.cc $LAYERS ../../tools/enumerate ../../tools/tangle && {
+LAYERS=$(../../linux/bootstrap/tools/enumerate --until $UNTIL_LAYER  |grep '\.cc$')
+older_than mu.cc $LAYERS ../../linux/bootstrap/tools/enumerate ../../linux/bootstrap/tools/tangle && {
   # no update here; rely on 'update' calls downstream
-  ../../tools/tangle $LAYERS  > mu.cc
+  ../../linux/bootstrap/tools/tangle $LAYERS  > mu.cc
 }
 
 older_than cleave/cleave cleave/cleave.cc && {
@@ -150,7 +150,7 @@ older_than mu_bin mu.cc *_list cleave/cleave termbox/* && {
 
 ## [0-9]*.mu -> core.mu
 
-MU_LAYERS=$(../../tools/enumerate --until $UNTIL_LAYER  |grep '\.mu$') || exit 0  # ok if no .mu files
+MU_LAYERS=$(../../linux/bootstrap/tools/enumerate --until $UNTIL_LAYER  |grep '\.mu$') || exit 0  # ok if no .mu files
 cat $MU_LAYERS  |update core.mu
 
 exit 0
diff --git a/archive/1.vm/build3 b/archive/1.vm/build3
index 11f8afc8..87dc4a21 100755
--- a/archive/1.vm/build3
+++ b/archive/1.vm/build3
@@ -106,12 +106,12 @@ noisy_cd() {
   echo "-- `pwd`" >&2
 }
 
-older_than ../../tools/enumerate ../../tools/enumerate.cc && {
-  $CXX $CXXFLAGS ../../tools/enumerate.cc -o ../../tools/enumerate
+older_than ../../linux/bootstrap/tools/enumerate ../../linux/bootstrap/tools/enumerate.cc && {
+  $CXX $CXXFLAGS ../../linux/bootstrap/tools/enumerate.cc -o ../../linux/bootstrap/tools/enumerate
 }
 
-older_than ../../tools/tangle ../../tools/tangle.cc && {
-  noisy_cd ../../tools
+older_than ../../linux/bootstrap/tools/tangle ../../linux/bootstrap/tools/tangle.cc && {
+  noisy_cd ../../linux/bootstrap/tools
     # auto-generate various lists (ending in '_list' by convention) {
     # list of function declarations, so I can define them in any order
     grep -h "^[^ #].*) {" tangle.cc  |sed 's/ {.*/;/'  |update tangle.function_list
@@ -121,13 +121,13 @@ older_than ../../tools/tangle ../../tools/tangle.cc && {
     # }
     $CXX $CFLAGS tangle.cc -o tangle
     ./tangle test
-  noisy_cd ../archive/1.vm  # no effect; just to show us returning to the parent directory
+  noisy_cd ../../../archive/1.vm  # no effect; just to show us returning to the parent directory
 }
 
-LAYERS=$(../../tools/enumerate --until $UNTIL_LAYER  |grep '\.cc$')
-older_than mu.cc $LAYERS ../../tools/enumerate ../../tools/tangle && {
+LAYERS=$(../../linux/bootstrap/tools/enumerate --until $UNTIL_LAYER  |grep '\.cc$')
+older_than mu.cc $LAYERS ../../linux/bootstrap/tools/enumerate ../../linux/bootstrap/tools/tangle && {
   # no update here; rely on 'update' calls downstream
-  ../../tools/tangle $LAYERS  > mu.cc
+  ../../linux/bootstrap/tools/tangle $LAYERS  > mu.cc
 }
 
 older_than cleave/cleave cleave/cleave.cc && {
@@ -175,7 +175,7 @@ older_than mu_bin mu.cc *_list cleave/cleave termbox/* && {
 
 ## [0-9]*.mu -> core.mu
 
-MU_LAYERS=$(../../tools/enumerate --until $UNTIL_LAYER  |grep '\.mu$') || exit 0  # ok if no .mu files
+MU_LAYERS=$(../../linux/bootstrap/tools/enumerate --until $UNTIL_LAYER  |grep '\.mu$') || exit 0  # ok if no .mu files
 cat $MU_LAYERS  |update core.mu
 
 exit 0
diff --git a/archive/1.vm/build4 b/archive/1.vm/build4
index dec46810..34ff0615 100755
--- a/archive/1.vm/build4
+++ b/archive/1.vm/build4
@@ -125,24 +125,24 @@ all_exist() {
 }
 
 TMP=`mktemp`
-mv_if_exists ../../tools/enumerate $TMP
+mv_if_exists ../../linux/bootstrap/tools/enumerate $TMP
 (
-  wait_for_all ../../tools/enumerate.cc
-  older_than $TMP ../../tools/enumerate.cc && {
+  wait_for_all ../../linux/bootstrap/tools/enumerate.cc
+  older_than $TMP ../../linux/bootstrap/tools/enumerate.cc && {
     echo "building enumerate"
-    $CXX $CXXFLAGS ../../tools/enumerate.cc -o $TMP  ||  quit
+    $CXX $CXXFLAGS ../../linux/bootstrap/tools/enumerate.cc -o $TMP  ||  quit
     echo "done building enumerate"
   }
-  mv $TMP ../../tools/enumerate
+  mv $TMP ../../linux/bootstrap/tools/enumerate
 ) &
 
 TMP=`mktemp`
-mv_if_exists ../../tools/tangle $TMP
+mv_if_exists ../../linux/bootstrap/tools/tangle $TMP
 (
-  wait_for_all ../../tools/tangle.cc
-  older_than $TMP ../../tools/tangle.cc && {
+  wait_for_all ../../linux/bootstrap/tools/tangle.cc
+  older_than $TMP ../../linux/bootstrap/tools/tangle.cc && {
     echo "building tangle"
-    cd ../../tools
+    cd ../../linux/bootstrap/tools
       # auto-generate various lists (ending in '_list' by convention) {
       # list of function declarations, so I can define them in any order
       grep -h "^[^ #].*) {" tangle.cc  |sed 's/ {.*/;/'  |update tangle.function_list
@@ -153,25 +153,25 @@ mv_if_exists ../../tools/tangle $TMP
       # Now that we have all the _lists, compile 'tangle'
       $CXX $CXXFLAGS tangle.cc -o $TMP  ||  quit
       $TMP test
-    cd ../archive/1.vm
+    cd ../../../archive/1.vm
     echo "done building tangle"
   }
-  mv $TMP ../../tools/tangle
+  mv $TMP ../../linux/bootstrap/tools/tangle
 ) &
 
-wait_for_all ../../tools/enumerate
+wait_for_all ../../linux/bootstrap/tools/enumerate
 echo "enumerating layers"
-LAYERS=$(../../tools/enumerate --until $UNTIL_LAYER  |grep '\.cc$')
+LAYERS=$(../../linux/bootstrap/tools/enumerate --until $UNTIL_LAYER  |grep '\.cc$')
 echo "done enumerating layers"
 
 TMP=`mktemp`
 mv_if_exists mu.cc $TMP
 (
-  wait_for_all $LAYERS ../../tools/enumerate ../../tools/tangle
-  older_than $TMP $LAYERS ../../tools/enumerate ../../tools/tangle && {
+  wait_for_all $LAYERS ../../linux/bootstrap/tools/enumerate ../../linux/bootstrap/tools/tangle
+  older_than $TMP $LAYERS ../../linux/bootstrap/tools/enumerate ../../linux/bootstrap/tools/tangle && {
     echo "running tangle"
     # no update here; rely on 'update' calls downstream
-    ../../tools/tangle $LAYERS >$TMP  ||  quit
+    ../../linux/bootstrap/tools/tangle $LAYERS >$TMP  ||  quit
     echo "done running tangle"
   }
   mv $TMP mu.cc
@@ -273,9 +273,9 @@ mv_if_exists mu_bin $TMP
 
 ## [0-9]*.mu -> core.mu
 
-wait_for_all ../../tools/enumerate
+wait_for_all ../../linux/bootstrap/tools/enumerate
 echo "building core.mu"
-MU_LAYERS=$(../../tools/enumerate --until $UNTIL_LAYER  |grep '\.mu$') || exit 0  # ok if no .mu files
+MU_LAYERS=$(../../linux/bootstrap/tools/enumerate --until $UNTIL_LAYER  |grep '\.mu$') || exit 0  # ok if no .mu files
 cat $MU_LAYERS  |update core.mu
 echo "done building core.mu"
 
diff --git a/archive/1.vm/clean b/archive/1.vm/clean
index c49c2ddc..e2d10bf4 100755
--- a/archive/1.vm/clean
+++ b/archive/1.vm/clean
@@ -6,4 +6,4 @@ rm -rf mu.cc core.mu mu_bin* *_list .build
 rm -rf termbox/*.o termbox/libtermbox.a
 rm -rf .until .quit
 test $# -gt 0 && exit 0  # convenience: 'clean top-level' to leave subsidiary tools alone
-rm -rf ../../tools/enumerate ../../tools/tangle ../../tools/*_list cleave/cleave cleave/cleave.dSYM ../../*/*.dSYM
+rm -rf ../../linux/bootstrap/tools/enumerate ../../linux/bootstrap/tools/tangle ../../linux/bootstrap/tools/*_list cleave/cleave cleave/cleave.dSYM ../../linux/bootstrap/tools/*.dSYM