basic version checking

rex.project/x86_64/components/dependencies/rectify_bison.bash

@@ -0,0 +1,27 @@
+#!/bin/bash
+set -u
+
+export LC_ALL=C
+
+real_name="bison"
+app="bison"
+
+dialog \
+	--title "Install ${real_name}?" \
+	--backtitle "Requirements Remediations" \
+	--yesno "Do you want to install ${real_name} on the build host?" 7 60
+
+response=$?
+
+# this is distro-specific and distro-specific function routing should
+# account for things like this
+
+case $response in
+	0) dnf -y install $app; install_result=$?;;
+	1) echo "Canceled.  You need $real_name to run this.";;
+	255) echo "Canceled.  You need $real_name to run this.";;
+esac
+
+
+
+exit $install_result