diff --git a/README.md b/README.md
index b26d559a..5591736a 100644
--- a/README.md
+++ b/README.md
@@ -422,6 +422,17 @@ git clone -b v2.0.0 https://github.com/cms-analysis/CombineHarvester.git Combine
 scramv1 b clean; scramv1 b
 ```
 
+### Packages
+
+To create datacards, you need to use the same cmsenv as above + these packages:
+
+```bash
+pip3 install --upgrade pip
+pip3 install rhalphalib
+cd /path/to/your/local/HHbbVV/repo
+pip3 install -e .
+```
+
 I also add this to my .bashrc for convenience:
 
 ```
diff --git a/inference_scans/run_law.sh b/inference_scans/run_law.sh
index b8fa636a..e2d8bdde 100755
--- a/inference_scans/run_law.sh
+++ b/inference_scans/run_law.sh
@@ -3,7 +3,7 @@
 
 ####################################################################################################
 # Script for running HH inference 'law' commands
-# 
+#
 # Usage:
 # 0) snapshot: --snapshot
 # 1) limits at point: --limpoint (--vbf)  # --vbf runs it for the VBF k2v=0 point
@@ -170,5 +170,3 @@ if [ $impacts = 1 ]; then
         --pull-range 3 \
         --Snapshot-custom-args="$custom_args"
 fi
-
-