From 67a62dabdb9a866899ec18d830837077a317d5d6 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?J=C3=BCrgen=20Weigert?= <jnweiger@gmail.com>
Date: Thu, 7 May 2020 01:39:16 +0200
Subject: [PATCH] Update eos.md

add some preconditions
---
 docs/eos.md | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/docs/eos.md b/docs/eos.md
index eecf8636b..bbedb587b 100644
--- a/docs/eos.md
+++ b/docs/eos.md
@@ -29,7 +29,11 @@ $ cd ocis
 
 ### Run it!
 
-We poured the nitty gritty details of setting up ocis into Makefile destinations. After running
+Preconditions
+* `go` (from golang.org/dl) and `gcc` (via e.g. `apt install build-essential`) are installed
+* No eos components are running. If in doubt, begin with `make eos-stop`
+
+We poured the nitty gritty details of setting up ocis into Makefile targets. After running
 
 ```
 $ make eos-start