diff --git a/extra/io/paths/paths.factor b/extra/io/paths/paths.factor
new file mode 100644
index 0000000000..3afb110687
--- /dev/null
+++ b/extra/io/paths/paths.factor
@@ -0,0 +1,24 @@
+USING: assocs io.files kernel namespaces sequences ;
+IN: io.paths
+
+: find-file ( seq str -- path/f )
+    [
+        [ path+ exists? ] curry find nip
+    ] keep over [ path+ ] [ drop ] if ;
+
+<PRIVATE
+: append-path ( path files -- paths )
+    [ path+ ] curry* map ;
+
+: get-paths ( dir -- paths )
+    dup directory keys append-path ;
+
+: (walk-dir) ( path -- )
+    dup directory? [
+        get-paths dup % [ (walk-dir) ] each
+    ] [
+        drop
+    ] if ;
+PRIVATE>
+
+: walk-dir ( path -- seq ) [ (walk-dir) ] { } make ;
diff --git a/extra/io/unix/files/files.factor b/extra/io/unix/files/files.factor
index 8f1d05876d..f9d642d661 100755
--- a/extra/io/unix/files/files.factor
+++ b/extra/io/unix/files/files.factor
@@ -38,21 +38,3 @@ M: unix-io make-directory ( path -- )
 
 M: unix-io delete-directory ( path -- )
     rmdir io-error ;
-
-M: unix-io binary-roots ( -- seq )
-    {
-        "/bin" "/sbin"
-        "/usr/bin" "/usr/sbin"
-        "/usr/local/bin" "/usr/local/sbin"
-        "/opt/local/bin" "/opt/local/sbin"
-        "~/bin"
-    } ;
-
-M: unix-io library-roots ( -- seq )
-    {
-        "/lib"
-        "/usr/lib"
-        "/usr/local/lib"
-        "/opt/local/lib"
-        "/lib64"
-    } ;
diff --git a/extra/io/windows/windows.factor b/extra/io/windows/windows.factor
index 2defa48298..8dcb138999 100755
--- a/extra/io/windows/windows.factor
+++ b/extra/io/windows/windows.factor
@@ -11,16 +11,6 @@ TUPLE: windows-nt-io ;
 TUPLE: windows-ce-io ;
 UNION: windows-io windows-nt-io windows-ce-io ;
 
-M: windows-io library-roots ( -- seq )
-    [
-        windows ,
-    ] { } make ;
-
-M: windows-io binary-roots ( -- seq )
-    [
-        windows ,
-    ] { } make ;
-
 M: windows-io destruct-handle CloseHandle drop ;
 
 M: windows-io destruct-socket closesocket drop ;