Add sphinx documentation system dependencies.

diff --git a/install-hdl-apt-reqs b/install-hdl-apt-reqs
index 31de76a2c3249083e3c8ce1885f14872b9c8fa19..9ef6dd5ef727eb79dadd38bbfdf0519c8eaba04c 100755 (executable)
--- a/install-hdl-apt-reqs
+++ b/install-hdl-apt-reqs
@@ -42,6 +42,8 @@ apt-get install -y autoconf \
     python3-setuptools \
     python3-venv \
     python3-sphinx \
+    python3-sphinx-rtd-theme \
+    python3-recommonmark \
     qemu-system-ppc \
     tcl \
     tcl-dev \