[PATCH 4/7] configure: Add nice hint to Python failure message

[John Snow <jsnow@redhat.com>]

If we begin requiring Python 3.7+, a few platforms are going to need to
install an additional package.

This is at least mildly annoying to the user (and I hate negative
attention), so solve the user's problem for them before they get a
chance to become irritated while searching on Google for how to install
newer Python packages.

Signed-off-by: John Snow <jsnow@redhat.com>
---
 configure | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/configure b/configure
index ea8c973d13b..bf512273f44 100755
--- a/configure
+++ b/configure
@@ -1058,7 +1058,10 @@ fi
 
 if ! check_py_version "$python"; then
   error_exit "Cannot use '$python', Python >= 3.6 is required." \
-      "Use --python=/path/to/python to specify a supported Python."
+             "Use --python=/path/to/python to specify a supported Python." \
+             "Maybe try:" \
+             "  openSUSE Leap 15.3+: zypper install python39" \
+             "  CentOS 8: dnf install python38"
 fi
 
 # Suppress writing compiled files
-- 
2.39.0