diff --git a/.gitignore b/.gitignore
index 57f9a3c..69aaa99 100644
--- a/.gitignore
+++ b/.gitignore
@@ -14,3 +14,4 @@
 /gnu/
 /bloatrunner 
 /*.tar.gz
+publish
diff --git a/configure.ac b/configure.ac
index bf12045..6a1029f 100644
--- a/configure.ac
+++ b/configure.ac
@@ -9,6 +9,7 @@ AM_SILENT_RULES([yes])
 AC_CONFIG_FILES([Makefile])
 AC_CONFIG_FILES([pre-inst-env], [chmod +x pre-inst-env])
 AC_CONFIG_FILES([bloatrunner], [chmod +x bloatrunner])
+AC_CONFIG_FILES([publish], [chmod +x publish])
 
 GUILE_PKG([3.0])
 GUILE_PROGS
diff --git a/game/model/level.scm b/game/model/level.scm
index 0914819..3b72937 100644
--- a/game/model/level.scm
+++ b/game/model/level.scm
@@ -78,7 +78,7 @@
     (%make-level width height tiles)))
 
 (define (level-parse-file filename)
-  (level-parse (call-with-input-file (assets-file-name filename) get-string-all)))
+  (level-parse (call-with-input-file filename get-string-all)))
 
 
 (define (level-tile-at-row-col level row col )
diff --git a/game/util/assets.scm b/game/util/assets.scm
index a4aaf82..49f4d42 100644
--- a/game/util/assets.scm
+++ b/game/util/assets.scm
@@ -13,20 +13,26 @@
 (define hero-texture #f)
 (define hero-atlas #f)
 
-(define prefix (or (getenv "ASSET_DIR") "." ))
-
-
-(define (assets-file-name name)
-  (string-append prefix "/" name)
+(define (assets-location)
+  (if (current-filename)
+      (pk "Assets location: " (string-append (dirname (current-filename)) "/../.."))
+      (or (getenv "ASSET_DIR") "." ))
   )
 
+(define (assets-file-name . names)
+  "Return the full path of a file in the assets directory. The file is
+   specified by a list of names, which are joined together.  The
+   ASSET_DIR environment variable can be used to specify a prefix to the
+   asset directory."
+  (string-append (assets-location) "/" (string-join names "/")))
+
 
 (define (read-level-map filename)
-  (call-with-input-file   get-string-all))
+  (call-with-input-file filename get-string-all))
 
 (define (assets-map-levels f)
   (map f 
-       (map (lambda (filename)(string-append prefix "/assets/levels/" filename))
+       (map (lambda (filename)(assets-file-name "assets/levels/" filename))
             (scandir (assets-file-name "assets/levels") 
                      (lambda (filename) (string-suffix? ".map" filename ))))))
 
diff --git a/publish.in b/publish.in
new file mode 100644
index 0000000..d819f5d
--- /dev/null
+++ b/publish.in
@@ -0,0 +1,36 @@
+
+ITCH_CHANNEL=snamellit/Bloatrunner
+
+if [[ ! -f Makefile ]]; then 
+  make distclean
+fi
+
+./bootstrap.sh
+./configure GUILE=$(which guile)
+make -j16
+make dist 
+
+SOURCETAR="@PACKAGE@-@VERSION@.tar.gz"
+
+if [ -f "$SOURCETAR" ]; then
+  echo "Found source tarball $SOURCE"
+  BASENAME="@PACKAGE@-@VERSION@"
+
+  echo releasing $BASENAME
+
+  butler push $SOURCETAR $ITCH_CHANNEL:source
+
+  TARBALL=$(guix pack -R -Sbloatrunner=bin -L .guix/modules bloatrunner)
+  echo created $TARBALL
+  TARGETNAME=/tmp/$BASENAME-linux-x86_64.tar.gz 
+  echo copy $TARBALL to $TARGETNAME
+  rm -f $TARGETNAME
+  cp $TARBALL $TARGETNAME
+
+  echo push $TARGETNAME
+  butler push $TARGETNAME $ITCH_CHANNEL:linux-x86_64
+
+else
+  echo "No source tarball found"
+  exit 1
+fi
diff --git a/publish.sh b/publish.sh
deleted file mode 100755
index 472eb7e..0000000
--- a/publish.sh
+++ /dev/null
@@ -1,35 +0,0 @@
-
-ITCH_CHANNEL=snamellit/Bloatrunner
-
-if [[ ! -f Makefile ]]; then 
-  make distclean
-fi
-
-./bootstrap.sh
-./configure GUILE=$(which guile)
-make -j16
-make dist 
-
-SOURCETAR=$(ls bloatrunner-*.tar.gz | head -n 1)
-
-if [ -f "$SOURCETAR" ]; then
-  echo "Found source tarball $SOURCE"
-  BASENAME=$(basename $SOURCETAR .tar.gz)
-	echo releasing $BASENAME
-
-	butler push $SOURCETAR $ITCH_CHANNEL:source
-
-	TARBALL=$(guix pack -R -Sbloatrunner=bin -L .guix/modules bloatrunner)
-	echo created $TARBALL
-	TARGETNAME=/tmp/$BASENAME-linux-x86_64.tar.gz 
-	echo copy $TARBALL to $TARGETNAME
-	rm -f $TARGETNAME
-	cp $TARBALL $TARGETNAME
-
-	echo push $TARGETNAME
-	butler push $TARGETNAME $ITCH_CHANNEL:linux-x86_64
-
-else
-  echo "No source tarball found"
-  exit 1
-fi