diff --git a/pkgs/applications/science/misc/sasview/xhtml2pdf.nix b/pkgs/applications/science/misc/sasview/xhtml2pdf.nix
index 42b9560d9b8..41d15e2f1ba 100644
--- a/pkgs/applications/science/misc/sasview/xhtml2pdf.nix
+++ b/pkgs/applications/science/misc/sasview/xhtml2pdf.nix
@@ -2,7 +2,7 @@
 
 let
   #xhtml2pdf specifically requires version "1.0b10" of html5lib
-  html5 = html5lib.overrideAttrs( oldAttrs: rec{
+  html5 = html5lib.overrideAttrs( oldAttrs: rec {
     name = "${oldAttrs.pname}-${version}";
     version = "1.0b10";
     src = oldAttrs.src.override {
diff --git a/pkgs/applications/virtualization/8086tiny/default.nix b/pkgs/applications/virtualization/8086tiny/default.nix
index 96ccc255881..db76efb96e5 100644
--- a/pkgs/applications/virtualization/8086tiny/default.nix
+++ b/pkgs/applications/virtualization/8086tiny/default.nix
@@ -4,7 +4,7 @@
 
 assert sdlSupport -> (SDL != null);
 
-stdenv.mkDerivation rec{
+stdenv.mkDerivation rec {
 
   pname = "8086tiny";
   version = "1.25";
diff --git a/pkgs/development/libraries/celt/0.5.1.nix b/pkgs/development/libraries/celt/0.5.1.nix
index e45d74345d4..759dd6254b4 100644
--- a/pkgs/development/libraries/celt/0.5.1.nix
+++ b/pkgs/development/libraries/celt/0.5.1.nix
@@ -1,6 +1,6 @@
 { callPackage, fetchurl, ... } @ args:
 
-callPackage ./generic.nix (args // rec{
+callPackage ./generic.nix (args // rec {
   version = "0.5.1.3";
 
   src = fetchurl {
diff --git a/pkgs/development/libraries/celt/0.7.nix b/pkgs/development/libraries/celt/0.7.nix
index a5dd401ec49..2092941dc76 100644
--- a/pkgs/development/libraries/celt/0.7.nix
+++ b/pkgs/development/libraries/celt/0.7.nix
@@ -1,6 +1,6 @@
 { callPackage, fetchurl, ... } @ args:
 
-callPackage ./generic.nix (args // rec{
+callPackage ./generic.nix (args // rec {
   version = "0.7.1";
 
   src = fetchurl {
diff --git a/pkgs/development/libraries/celt/default.nix b/pkgs/development/libraries/celt/default.nix
index 61352d5caf9..3071b5d7c6b 100644
--- a/pkgs/development/libraries/celt/default.nix
+++ b/pkgs/development/libraries/celt/default.nix
@@ -1,6 +1,6 @@
 { callPackage, fetchurl, ... } @ args:
 
-callPackage ./generic.nix (args // rec{
+callPackage ./generic.nix (args // rec {
   version = "0.11.3";
 
   src = fetchurl {
diff --git a/pkgs/development/python-modules/pandocfilters/default.nix b/pkgs/development/python-modules/pandocfilters/default.nix
index 5b87593e0c6..f688d97c91d 100644
--- a/pkgs/development/python-modules/pandocfilters/default.nix
+++ b/pkgs/development/python-modules/pandocfilters/default.nix
@@ -3,7 +3,7 @@
 , fetchPypi
 }:
 
-buildPythonPackage rec{
+buildPythonPackage rec {
   version = "1.4.2";
   pname = "pandocfilters";
 
diff --git a/pkgs/development/python-modules/periodictable/default.nix b/pkgs/development/python-modules/periodictable/default.nix
index e3536232680..acbfc06850e 100644
--- a/pkgs/development/python-modules/periodictable/default.nix
+++ b/pkgs/development/python-modules/periodictable/default.nix
@@ -1,6 +1,6 @@
 {lib, fetchPypi, buildPythonPackage, numpy, pyparsing}:
 
-buildPythonPackage rec{
+buildPythonPackage rec {
   pname = "periodictable";
   version = "1.5.2";
 
diff --git a/pkgs/development/python-modules/toolz/default.nix b/pkgs/development/python-modules/toolz/default.nix
index cb635d227f7..e0039057d82 100644
--- a/pkgs/development/python-modules/toolz/default.nix
+++ b/pkgs/development/python-modules/toolz/default.nix
@@ -4,7 +4,7 @@
 , nose
 }:
 
-buildPythonPackage rec{
+buildPythonPackage rec {
   pname = "toolz";
   version = "0.10.0";
 
diff --git a/pkgs/development/python-modules/trezor_agent/default.nix b/pkgs/development/python-modules/trezor_agent/default.nix
index ad4a30d97c5..2c254aa25bb 100644
--- a/pkgs/development/python-modules/trezor_agent/default.nix
+++ b/pkgs/development/python-modules/trezor_agent/default.nix
@@ -13,7 +13,7 @@
 , pinentry
 }:
 
-buildPythonPackage rec{
+buildPythonPackage rec {
   pname = "trezor_agent";
   version = "0.10.0";
 
diff --git a/pkgs/development/python-modules/x11_hash/default.nix b/pkgs/development/python-modules/x11_hash/default.nix
index 7cc921047ac..22ce5917e2a 100644
--- a/pkgs/development/python-modules/x11_hash/default.nix
+++ b/pkgs/development/python-modules/x11_hash/default.nix
@@ -3,7 +3,7 @@
 , fetchPypi
 }:
 
-buildPythonPackage rec{
+buildPythonPackage rec {
   version = "1.4";
   pname = "x11_hash";
 
diff --git a/pkgs/development/python-modules/yenc/default.nix b/pkgs/development/python-modules/yenc/default.nix
index 13c8d53f19b..453f3113853 100644
--- a/pkgs/development/python-modules/yenc/default.nix
+++ b/pkgs/development/python-modules/yenc/default.nix
@@ -6,7 +6,7 @@
 , isPy3k
 }:
 
-buildPythonPackage rec{
+buildPythonPackage rec {
   pname = "yenc";
   version = "0.4.0";
   src = fetchurl {
diff --git a/pkgs/tools/admin/scaleway-cli/default.nix b/pkgs/tools/admin/scaleway-cli/default.nix
index f9b608ebc4c..eeae7fbe1bf 100644
--- a/pkgs/tools/admin/scaleway-cli/default.nix
+++ b/pkgs/tools/admin/scaleway-cli/default.nix
@@ -1,6 +1,6 @@
 { stdenv, fetchFromGitHub, buildGoPackage }:
 
-buildGoPackage rec{
+buildGoPackage rec {
   pname = "scaleway-cli";
   version = "1.20";