5 files changed, 9 insertions, 12 deletions
diff --git a/pkgs/tools/filesystems/duff/default.nix b/pkgs/tools/filesystems/duff/default.nix
index 1c4d068c4c13..078c80a8b703 100644
--- a/pkgs/tools/filesystems/duff/default.nix
+++ b/pkgs/tools/filesystems/duff/default.nix
@@ -1,10 +1,10 @@
 { stdenv, fetchFromGitHub, autoreconfHook, gettext }:
 
-# The last release (0.5.2) is more than 2 years old and lacks features like -D,
-# limiting its usefulness. Upstream appears comatose if not dead.
-let version = "2014-07-03"; in
-stdenv.mkDerivation {
+stdenv.mkDerivation rec {
   name = "duff-${version}";
+  # The last release (0.5.2) is more than 2 years old and lacks features like -D,
+  # limiting its usefulness. Upstream appears comatose if not dead.
+  version = "2014-07-03";
 
   src = fetchFromGitHub {
     sha256 = "1k2dx38pjzc5d624vw1cs5ipj9fprsm5vqv55agksc29m63lswnx";
@@ -28,7 +28,6 @@ stdenv.mkDerivation {
   enableParallelBuilding = true;
 
   meta = with stdenv.lib; {
-    inherit version;
     description = "Quickly find duplicate files";
     longDescription = ''
       Duff is a Unix command-line utility for quickly finding duplicates in
diff --git a/pkgs/tools/filesystems/encfs/default.nix b/pkgs/tools/filesystems/encfs/default.nix
index b21054e478df..158050f6291e 100644
--- a/pkgs/tools/filesystems/encfs/default.nix
+++ b/pkgs/tools/filesystems/encfs/default.nix
@@ -1,9 +1,9 @@
 { stdenv, fetchFromGitHub, autoreconfHook, boost, fuse, openssl, perl
 , pkgconfig, rlog }:
 
-let version = "1.8.1"; in
-stdenv.mkDerivation {
+stdenv.mkDerivation rec {
   name = "encfs-${version}";
+  version = "1.8.1";
 
   src = fetchFromGitHub {
     sha256 = "1cxihqwpnqbzy8qz0134199pwfnd7ikr2835p5p1yzqnl203wcdb";
diff --git a/pkgs/tools/filesystems/exfat/default.nix b/pkgs/tools/filesystems/exfat/default.nix
index 507c5e7a6c0e..7c483c9258a6 100644
--- a/pkgs/tools/filesystems/exfat/default.nix
+++ b/pkgs/tools/filesystems/exfat/default.nix
@@ -1,8 +1,8 @@
 { stdenv, fetchFromGitHub, autoreconfHook, pkgconfig, fuse }:
 
-let version = "1.2.3"; in
 stdenv.mkDerivation rec {
   name = "exfat-${version}";
+  version = "1.2.3";
 
   src = fetchFromGitHub {
     sha256 = "147s11sqmn5flbvz2hwpl6kdfqi2gnm1c2nsn5fxygyw7qyhpzda";
@@ -15,7 +15,6 @@ stdenv.mkDerivation rec {
   nativeBuildInputs = [ autoreconfHook pkgconfig ];
 
   meta = with stdenv.lib; {
-    inherit version;
     inherit (src.meta) homepage;
     description = "Free exFAT file system implementation";
     platforms = platforms.linux;
diff --git a/pkgs/tools/filesystems/gpart/default.nix b/pkgs/tools/filesystems/gpart/default.nix
index 359ef16c2b84..dfa6fe3234c2 100644
--- a/pkgs/tools/filesystems/gpart/default.nix
+++ b/pkgs/tools/filesystems/gpart/default.nix
@@ -1,8 +1,8 @@
 { stdenv, fetchFromGitHub, autoreconfHook }:
 
-let version = "0.3"; in
 stdenv.mkDerivation rec {
   name = "gpart-${version}";
+  version = "0.3";
 
   # GitHub repository 'collating patches for gpart from all distributions':
   src = fetchFromGitHub {
@@ -19,7 +19,6 @@ stdenv.mkDerivation rec {
   doCheck = true;
 
   meta = with stdenv.lib; {
-    inherit version;
     inherit (src.meta) homepage;
     description = "Guess PC-type hard disk partitions";
     longDescription = ''
diff --git a/pkgs/tools/filesystems/mp3fs/default.nix b/pkgs/tools/filesystems/mp3fs/default.nix
index 3b6b3c919cd7..77207cb8b3a1 100644
--- a/pkgs/tools/filesystems/mp3fs/default.nix
+++ b/pkgs/tools/filesystems/mp3fs/default.nix
@@ -1,8 +1,8 @@
 { stdenv, fetchurl, flac, fuse, lame, libid3tag, pkgconfig }:
 
-let version = "0.91"; in
 stdenv.mkDerivation rec {
   name = "mp3fs-${version}";
+  version = "0.91";
 
   src = fetchurl {
     url = "https://github.com/khenriks/mp3fs/releases/download/v${version}/${name}.tar.gz";