Install Orion as an executable heap image

install.scm

@@ -6,16 +6,35 @@ exec scsh -lel install-lib/load.scm -dm -o install-orion -e install-program-main
   (open scheme-with-scsh
         install-lib)
   (begin
-    (define orion-template #<<END
-#!/bin/sh
-exec scsh -lel module-system-1.0/load.scm -lel interaction-0.2/load.scm -lel cml-1.0/load.scm -lel heap-images-1.0/load.scm -lel scx-0.2/load.scm -lm ~a/packages.scm -m main -s "$0"
-!#
-(start)
-
+    (run (scsh -lel module-system-1.0/load.scm -lel interaction-0.2/load.scm
+               -lel cml-1.0/load.scm -lel heap-images-1.0/load.scm 
+               -lel scx-0.3/load.scm -lm src/packages.scm -o main -e main -sfd 0)
+         (<< #<<END
+             (define (main args) 
+               (define image-header 
+                 (format #f "#!~a/scsh/scshvm \\\n-o ~a/scsh/scshvm -i\n"
+                         (lib-dir) (lib-dir)))
+  
+               (with-output-to-file
+                   "orion.header"
+                 (lambda ()
+                   (display image-header)
+                   (newline)))
+               
+               (dump-scsh-program 
+                orion-wm "orion.image")
+    
+               (run (cat "orion.header" "orion.image") (> "orion"))
+               
+               (set-file-mode "orion" #o755)
+    
+               (delete-file "orion.header")
+    
+               (delete-file "orion.image"))
 END
-)
+))
 
-    (define-program "orion" (0 2) ((install-lib-version (1 1)))
+    (define-program "orion" (0 3) ((install-lib-version (1 1)))
       ;; Install documentation
       (install-file "doc/user.html" 'doc "html")
 
@@ -23,8 +42,4 @@ END
       (install-directory-contents "src" 'scheme)
 
       ;; Install script
-      (install-string (format #f orion-template (get-directory 'scheme #f))
-       "orion"
-        'bin 
-        "."
-         #o555))))
+      (install-file "orion" 'bin))))