Document the YAML requirement of make-fontawesome5.py

2 files changed, 12 insertions, 4 deletions

diff --git a/README.md b/README.md
index 8aa0176..807e590 100644
--- a/README.md
+++ b/README.md
@@ -17,9 +17,16 @@ by Alessandro Plasmati.
 
 Font Awesome 5
 --------------
-I wrote a simple tool [`make-fontawesome5.py`](fontawesome5/make-fontawesome5.py)
-to generate the LaTeX style file for using the latest **Font Awesome 5**
-(the *free* edition) in LaTeX.
+I wrote a simple tool [`make-fontawesome5.py`](fontawesome5/make-fontawesome5.py),
+which will download the latest icon list from the
+[Font Awesome](https://github.com/FortAwesome/Font-Awesome) project
+and then generate the LaTeX style file for using the latest
+**Font Awesome 5** (the *free* edition) in LaTeX.
+
+This Python script requires the [`PyYAML`](https://github.com/yaml/pyyaml)
+package, which can be installed with `pip3 install --user PyYAML`
+or `sudo apt install python3-yaml`.
+
 A pre-generated style file [`fontawesome5.sty`](fontawesome5/fontawesome5.sty)
 (matches Font Awesome **v5.2.0**) is also provided.
 
diff --git a/fontawesome5/make-fontawesome5.py b/fontawesome5/make-fontawesome5.py
index 0c26f30..14de6a2 100755
--- a/fontawesome5/make-fontawesome5.py
+++ b/fontawesome5/make-fontawesome5.py
@@ -21,10 +21,11 @@ Credits:
 import os
 import sys
 import argparse
-import yaml
 import urllib.request
 from datetime import datetime
 
+# Require the 'PyYAML' package (or 'python3-yaml' package on Debian)
+import yaml
 
 FA_URL = "https://github.com/FortAwesome/Font-Awesome"
 ICONS_URL = FA_URL + "/raw/master/advanced-options/metadata/icons.yml"