From d105e6a7394cfa9635141d4f60da3f300678df0d Mon Sep 17 00:00:00 2001
From: Ben Sima <ben@bsima.me>
Date: Thu, 29 Aug 2019 06:25:12 -0700
Subject: add nix-pin

---
 nix-pin | 14 ++++++++++++++
 1 file changed, 14 insertions(+)
 create mode 100755 nix-pin

diff --git a/nix-pin b/nix-pin
new file mode 100755
index 0000000..30253b6
--- /dev/null
+++ b/nix-pin
@@ -0,0 +1,14 @@
+#!/usr/bin/env bash
+
+[[ -z $1 ]] && echo "usage: nix-pin <hash>" && exit 1
+
+url="https://github.com/NixOS/nixpkgs/archive/$1.tar.gz"
+hash=$(nix-prefetch-url --unpack $url)
+
+cat <<EOF
+# generated with ~/bin/nix-pin
+{
+  url = "$url";
+  sha256 = "$hash";
+}
+EOF
-- 
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