From 16c7cfb35404c0ee91fa46c2efa959e52b702572 Mon Sep 17 00:00:00 2001
From: Florian Sesser <florian@private.storage>
Date: Wed, 13 Apr 2022 10:42:36 +0000
Subject: [PATCH] Add update-nixpkgs micro howto

---
 tools/update-nixpkgs.rst | 8 ++++++++
 1 file changed, 8 insertions(+)
 create mode 100644 tools/update-nixpkgs.rst

diff --git a/tools/update-nixpkgs.rst b/tools/update-nixpkgs.rst
new file mode 100644
index 00000000..3888ecaa
--- /dev/null
+++ b/tools/update-nixpkgs.rst
@@ -0,0 +1,8 @@
+To create a nice summary text to of what an update will change - to put in Merge Requests, for example - run::
+
+    nix-build -A morph -o result-before
+    update-nixpkgs
+    nix-build -A morph -o result-after
+    nix-shell -p nixUnstable
+    nix --extra-experimental-features nix-command store diff-closures ./result-before/ ./result-after/
+
-- 
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