diff --git a/extra/io/launcher/launcher.factor b/extra/io/launcher/launcher.factor
index 21d3757c4e..d63b2cd9c0 100755
--- a/extra/io/launcher/launcher.factor
+++ b/extra/io/launcher/launcher.factor
@@ -4,7 +4,7 @@ USING: io io.backend io.timeouts io.pipes system kernel
 namespaces strings hashtables sequences assocs combinators
 vocabs.loader init threads continuations math io.encodings
 io.streams.duplex io.nonblocking io.streams.duplex accessors
-concurrency.flags locals destructors ;
+concurrency.flags destructors ;
 IN: io.launcher
 
 TUPLE: process < identity-tuple
@@ -146,56 +146,53 @@ M: process set-timeout set-process-timeout ;
 
 M: process timed-out kill-process ;
 
-:: <process-reader*> ( process encoding -- process stream )
+: <process-reader*> ( process encoding -- process stream )
     [
-        (pipe) {
+        >r (pipe) {
             [ add-error-destructor ]
             [
-                process >process
+                swap >process
                     [ swap out>> or ] change-stdout
                 run-detached
             ]
             [ out>> close-handle ]
-            [ in>> <reader> encoding <decoder> ]
-        } cleave
+            [ in>> <reader> ]
+        } cleave r> <decoder>
     ] with-destructors ;
 
 : <process-reader> ( desc encoding -- stream )
     <process-reader*> nip ; inline
 
-:: <process-writer*> ( process encoding -- process stream )
+: <process-writer*> ( process encoding -- process stream )
     [
-        (pipe) {
+        >r (pipe) {
             [ add-error-destructor ]
             [
-                process >process
+                swap >process
                     [ swap in>> or ] change-stdout
                 run-detached
             ]
             [ in>> close-handle ]
-            [ out>> <writer> encoding <encoder> ]
-        } cleave
+            [ out>> <writer> ]
+        } cleave r> <encoder>
     ] with-destructors ;
 
 : <process-writer> ( desc encoding -- stream )
     <process-writer*> nip ; inline
 
-:: <process-stream*> ( process encoding -- process stream )
+: <process-stream*> ( process encoding -- process stream )
     [
-        (pipe) (pipe) {
+        >r (pipe) (pipe) {
             [ [ add-error-destructor ] bi@ ]
             [
-                process >process
+                rot >process
                     [ swap out>> or ] change-stdout
                     [ swap in>> or ] change-stdin
                 run-detached
             ]
             [ [ in>> close-handle ] [ out>> close-handle ] bi* ]
-            [
-                [ in>> <reader> ] [ out>> <writer> ] bi*
-                encoding <encoder-duplex>
-            ]
-        } 2cleave
+            [ [ in>> <reader> ] [ out>> <writer> ] bi* ]
+        } 2cleave r> <encoder-duplex>
     ] with-destructors ;
 
 : <process-stream> ( desc encoding -- stream )
diff --git a/extra/io/pipes/pipes.factor b/extra/io/pipes/pipes.factor
index 241cf3e971..274d933f0d 100644
--- a/extra/io/pipes/pipes.factor
+++ b/extra/io/pipes/pipes.factor
@@ -8,30 +8,29 @@ IN: io.pipes
 
 TUPLE: pipe in out ;
 
-: close-pipe ( pipe -- )
-    [ in>> ] [ out>> ] bi 2array dispose-each ;
+M: pipe dispose ( pipe -- )
+    [ in>> close-handle ] [ out>> close-handle ] bi ;
 
 HOOK: (pipe) io-backend ( -- pipe )
 
 :: <pipe> ( encoding -- input-stream output-stream )
     [
         (pipe)
-        [ [ close-later ] each ]
-        [
-            [ in>> <reader> encoding <decoder> ]
-            [ out>> <writer> encoding <encoder> ] bi
-        ] bi
+        [ add-error-destructor ]
+        [ in>> <reader> encoding <decoder> ]
+        [ out>> <writer> encoding <encoder> ]
+        tri
     ] with-destructors ;
 
 :: with-fds ( input-fd output-fd quot encoding -- )
     input-fd [ <reader> encoding <decoder> dup add-always-destructor ] [ input-stream get ] if* [
         output-fd [ <writer> encoding <encoder> dup add-always-destructor ] [ output-stream get ] if*
-        quot with-output-stream
-    ] with-input-stream ; inline
+        quot with-output-stream*
+    ] with-input-stream* ; inline
 
 : <pipes> ( n -- pipes )
-    [ (pipe) dup [ close-later ] each ] replicate
-    { f f } [ prefix ] [ suffix ] bi
+    [ (pipe) dup add-error-destructor ] replicate
+    f f pipe boa [ prefix ] [ suffix ] bi
     2 <sliding-groups> ;
 
 : with-pipe-fds ( seq -- results )
diff --git a/extra/io/unix/unix-tests.factor b/extra/io/unix/unix-tests.factor
index 3dc1f1d5fc..61a667b70f 100755
--- a/extra/io/unix/unix-tests.factor
+++ b/extra/io/unix/unix-tests.factor
@@ -1,6 +1,7 @@
 USING: io.files io.sockets io kernel threads
 namespaces tools.test continuations strings byte-arrays
-sequences prettyprint system io.encodings.binary io.encodings.ascii ;
+sequences prettyprint system io.encodings.binary io.encodings.ascii
+io.streams.duplex ;
 IN: io.unix.tests
 
 ! Unix domain stream sockets