From 6f1308ba95bc627aa77893995570764c352ea22a Mon Sep 17 00:00:00 2001
From: Franz Pletz <fpletz@fnordicwalking.de>
Date: Thu, 17 Nov 2016 17:47:18 +0100
Subject: [PATCH] Revert "btrfs-progs: 4.8.2 -> 4.8.3"

This reverts commit e82c325bff0295ed4bbbd308fd4f99cdfd9ab515.

This package update breaks the `update-grub.pl` script:

    updating GRUB 2 menu...
    Btrfs did not return a path for the subvolume at /
    error: unable to activate new configuration

This backwards-incompatible change is the culprit:

    $ /nix/store/np25r3yzv2r41ji7v73j110inpj8lhn2-btrfs-progs-4.8.2/bin/btrfs subvol show /
    / is toplevel subvolume

vs.

    $ /nix/store/h53vs13nqvjwahpl26a4s7ygqk9xw1mw-btrfs-progs-4.8.3/bin/btrfs subvol show /
    /
    	Name: 			<FS_TREE>
    	UUID: 			-
    	Parent UUID: 		-
    	Received UUID: 		-
    	Creation time: 		-
    	Subvolume ID: 		5
    	Generation: 		6004631
    	Gen at creation: 	0
    	Parent ID: 		0
    	Top level ID: 		0
    	Flags: 			-
    	Snapshot(s):
---
 pkgs/tools/filesystems/btrfs-progs/default.nix | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/pkgs/tools/filesystems/btrfs-progs/default.nix b/pkgs/tools/filesystems/btrfs-progs/default.nix
index 0e7e6fbcdec..525aa2fec28 100644
--- a/pkgs/tools/filesystems/btrfs-progs/default.nix
+++ b/pkgs/tools/filesystems/btrfs-progs/default.nix
@@ -2,14 +2,14 @@
 , asciidoc, xmlto, docbook_xml_dtd_45, docbook_xsl, libxslt
 }:
 
-let version = "4.8.3"; in
+let version = "4.8.2"; in
 
 stdenv.mkDerivation rec {
   name = "btrfs-progs-${version}";
 
   src = fetchurl {
     url = "mirror://kernel/linux/kernel/people/kdave/btrfs-progs/btrfs-progs-v${version}.tar.xz";
-    sha256 = "1wlflrygnpndppil9g12pk184f75g9qx1lkr0x1gijigglqhr9n1";
+    sha256 = "0pswcfmdnfc586770h74abp67gn2xv8fd46vxlimnmn837sj7h41";
   };
 
   buildInputs = [