# HG changeset patch
# User Malcolm Matalka <malcolm.matalka@acsl.se>
# Date 1566745206 -7200
#      Sun Aug 25 17:00:06 2019 +0200
# Node ID b19dcaef25ca9341eb6e1f1bc0b944a385d4cdf8
# Parent  c8268a144f1ba8cb13ad03cc30bcb00e3f6bb4f6
ADD js_of_ocaml-ppx to build script

diff --git a/.builds/alpine.yml b/.builds/alpine.yml
--- a/.builds/alpine.yml
+++ b/.builds/alpine.yml
@@ -17,7 +17,7 @@
       opam switch create 4.06.0
   - setup-environment: |
       eval $(opam env)
-      opam install -y hll pds js_of_ocaml
+      opam install -y hll pds js_of_ocaml js_of_ocaml-ppx
   - build: |
       eval $(opam env)
       cd byocm/code
diff --git a/.builds/freebsd.yml b/.builds/freebsd.yml
--- a/.builds/freebsd.yml
+++ b/.builds/freebsd.yml
@@ -16,7 +16,7 @@
       opam switch create 4.06.0
   - setup-environment: |
       eval $(opam env)
-      opam install -y hll pds js_of_ocaml
+      opam install -y hll pds js_of_ocaml js_of_ocaml-ppx
   - build: |
       eval $(opam env)
       cd byocm/code
diff --git a/code/src/byocm_fut/byocm_fut.mli b/code/src/byocm_fut/byocm_fut.mli
--- a/code/src/byocm_fut/byocm_fut.mli
+++ b/code/src/byocm_fut/byocm_fut.mli
@@ -1,3 +1,17 @@
+(** This module provides a basic promise/future implementation with an infix
+   monadic implementation.
+
+   A promise is a container for a value which will be set at some point in the
+   future.  A promise can only be set once.  A future is a value which is used
+   to wait for the value of a promise to be set.  A future is read-only while a
+   promise is write-only.
+
+   An API will generally be written like:
+
+   [ let p = Promise.create () in
+     let callback v = Promise.set p v in
+     schedule_work callback;
+     Promise.future p ] *)
 type +'a t
 
 module Promise : sig