README

1 files changed, 6 insertions, 2 deletions

diff --git a/README.md b/README.md
index 1a2d4e8..cf8efa6 100644
--- a/README.md
+++ b/README.md
@@ -1,8 +1,12 @@
 # guix-bioinformatics
 
 Bioinformatics packages for GNU Guix that are used in http://genenetwork.org/.
+See [Guix Notes](https://github.com/pjotrp/guix-notes/blob/master/HACKING.org) for hacking GNU Guix.
 
-Some of these should make it upstream into the GNU Guix repository when tested
-and stable.
+Set the GUIX_PACKAGE_PATH to point to the root of this directory
+before running Guix.
+
+Some of these package definitions should make it upstream into the GNU
+Guix repository when tested and stable.