diff --git a/hall.scm b/hall.scm
index dbb5bbc..23d8ca1 100644
--- a/hall.scm
+++ b/hall.scm
@@ -19,16 +19,16 @@
      (native-language-support #f)
      (licensing #f)))
   (files (libraries
-           ((directory
+           ((scheme-file "runewidth")
+            (directory
               "runewidth"
               ((scheme-file "emoji")
-               (directory "eastasian"
-                          ((scheme-file "locale")))
+               (directory "eastasian" ((scheme-file "locale")))
                (scheme-file "eastasian")
                (scheme-file "internal")))))
          (tests ((directory
-                  "tests"
-                  ((scheme-file "test-eastasian-locale")))))
+                   "tests"
+                   ((scheme-file "test-eastasian-locale")))))
          (programs
            ((directory
               "scripts"
diff --git a/runewidth.scm b/runewidth.scm
new file mode 100644
index 0000000..e69de29