From 8b0968b2054d3bb8d90b5ac056727f7c2ebeaed3 Mon Sep 17 00:00:00 2001
From: Igor Pashev <pashev.igor@gmail.com>
Date: Tue, 11 Dec 2018 18:10:48 +0300
Subject: (* HUGE *) Use nixpkgs overlays

---
 README.md | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

(limited to 'README.md')

diff --git a/README.md b/README.md
index 7ae75e5..5c13562 100644
--- a/README.md
+++ b/README.md
@@ -12,6 +12,7 @@ and package set (extending and overriding it).
 Features
 ========
 
+
 Plug & Play
 -----------
 
@@ -31,11 +32,16 @@ or packages and put them into your project with your modifications without
 maintaning a fork of Nixsap.  When taking modules you have to change the
 `nixsap` namespace to something different to avoid conflicts.
 
-It is also possible to build and install packages that are overridden
-by Nixsap, for example:
+
+Package Overlay
+---------------
+
+Nixsap modules use a package overlay located in [./pkgs/default.nix](./pkgs/default.nix).
+It is also possible to build and install packages from this overlay independently,
+for example:
 
 ```
-nix-env [-I nixpkgs=/path/to/vanila/nixpkgs] -f /path/to/nixsap/pkgs -i nodejs-sass
+nix-build -E '(import <nixpkgs> { overlays = [ (import ./pkgs/default.nix) ]; })' -A icinga2
 ```
 
 
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