treewide: remove redundant rec

43 files changed, 43 insertions, 43 deletions

diff --git a/pkgs/development/interpreters/ceptre/default.nix b/pkgs/development/interpreters/ceptre/default.nix
index 29d63f1d0048..cde9146f78c6 100644
--- a/pkgs/development/interpreters/ceptre/default.nix
+++ b/pkgs/development/interpreters/ceptre/default.nix
@@ -1,6 +1,6 @@
 { stdenv, fetchgit, mlton }:
 
-stdenv.mkDerivation rec {
+stdenv.mkDerivation {
   name = "ceptre-2016-11-27";
 
   src = fetchgit {
diff --git a/pkgs/development/interpreters/clips/default.nix b/pkgs/development/interpreters/clips/default.nix
index 918c577356cd..c70bfd9406e0 100644
--- a/pkgs/development/interpreters/clips/default.nix
+++ b/pkgs/development/interpreters/clips/default.nix
@@ -1,6 +1,6 @@
 { stdenv, fetchurl }:
 
-stdenv.mkDerivation rec {
+stdenv.mkDerivation {
   version = "6.30";
   pname = "clips";
   src = fetchurl {
diff --git a/pkgs/development/interpreters/clojurescript/lumo/default.nix b/pkgs/development/interpreters/clojurescript/lumo/default.nix
index ab8e616ac6d5..0e9d81d5e959 100644
--- a/pkgs/development/interpreters/clojurescript/lumo/default.nix
+++ b/pkgs/development/interpreters/clojurescript/lumo/default.nix
@@ -126,7 +126,7 @@ let # packageJSON=./package.json;
 
     getJarPath = jarName: (lib.findFirst (p: p.name == jarName) null cljdeps.packages).path.jar;
 
-in stdenv.mkDerivation rec {
+in stdenv.mkDerivation {
   inherit version;
   pname = "lumo";
 
diff --git a/pkgs/development/interpreters/elixir/1.5.nix b/pkgs/development/interpreters/elixir/1.5.nix
index d32f91275652..229c42d9f7b2 100644
--- a/pkgs/development/interpreters/elixir/1.5.nix
+++ b/pkgs/development/interpreters/elixir/1.5.nix
@@ -1,6 +1,6 @@
 { mkDerivation }:
 
-mkDerivation rec {
+mkDerivation {
   version = "1.5.3";
   sha256 = "00kgqcn9g6vflc551wniz9pwv7pszyf8v6smpkqs50j3kbliihy5";
   minimumOTPVersion = "18";
diff --git a/pkgs/development/interpreters/elixir/1.6.nix b/pkgs/development/interpreters/elixir/1.6.nix
index 73afcbd1597e..94dffd1f763d 100644
--- a/pkgs/development/interpreters/elixir/1.6.nix
+++ b/pkgs/development/interpreters/elixir/1.6.nix
@@ -1,6 +1,6 @@
 { mkDerivation }:
 
-mkDerivation rec {
+mkDerivation {
   version = "1.6.6";
   sha256 = "1wl8rfpw0dxacq4f7xf6wjr8v2ww5691d0cfw9pzw7phd19vazgl";
   minimumOTPVersion = "19";
diff --git a/pkgs/development/interpreters/elixir/1.7.nix b/pkgs/development/interpreters/elixir/1.7.nix
index adbbbaff890b..10ebd5438a11 100644
--- a/pkgs/development/interpreters/elixir/1.7.nix
+++ b/pkgs/development/interpreters/elixir/1.7.nix
@@ -1,6 +1,6 @@
 { mkDerivation }:
 
-mkDerivation rec {
+mkDerivation {
   version = "1.7.4";
   sha256 = "0f8j4pib13kffiihagdwl3xqs3a1ak19qz3z8fpyfxn9dnjiinla";
   minimumOTPVersion = "19";
diff --git a/pkgs/development/interpreters/elixir/1.8.nix b/pkgs/development/interpreters/elixir/1.8.nix
index e240e1907e06..931fa50b1f72 100644
--- a/pkgs/development/interpreters/elixir/1.8.nix
+++ b/pkgs/development/interpreters/elixir/1.8.nix
@@ -1,6 +1,6 @@
 { mkDerivation }:
 
-mkDerivation rec {
+mkDerivation {
   version = "1.8.2";
   sha256 = "1n77cpcl2b773gmj3m9s24akvj9gph9byqbmj2pvlsmby4aqwckq";
   minimumOTPVersion = "20";
diff --git a/pkgs/development/interpreters/elixir/1.9.nix b/pkgs/development/interpreters/elixir/1.9.nix
index 41601eeaa118..b9b2400b78b9 100644
--- a/pkgs/development/interpreters/elixir/1.9.nix
+++ b/pkgs/development/interpreters/elixir/1.9.nix
@@ -1,6 +1,6 @@
 { mkDerivation }:
 
-mkDerivation rec {
+mkDerivation {
   version = "1.9.1";
   sha256 = "106s2a3dykc5iwfrd5icqd737yfzaz1dw4x5v1j5z2fvf46h96dx";
   minimumOTPVersion = "20";
diff --git a/pkgs/development/interpreters/erlang/R16B02-basho.nix b/pkgs/development/interpreters/erlang/R16B02-basho.nix
index c263551de2da..11637868ed0f 100644
--- a/pkgs/development/interpreters/erlang/R16B02-basho.nix
+++ b/pkgs/development/interpreters/erlang/R16B02-basho.nix
@@ -1,6 +1,6 @@
 { pkgs, mkDerivation }:
 
-mkDerivation rec {
+mkDerivation {
   baseName = "erlang";
   version = "16B02.basho10";
 
diff --git a/pkgs/development/interpreters/erlang/R18.nix b/pkgs/development/interpreters/erlang/R18.nix
index 58b7fd71f0be..e9d9366851eb 100644
--- a/pkgs/development/interpreters/erlang/R18.nix
+++ b/pkgs/development/interpreters/erlang/R18.nix
@@ -21,7 +21,7 @@ let
      sha256 = "1cj9fjhdng6yllajjm3gkk04ag9bwyb3n70hrb5nk6c292v8a45c";
   };
 
-in mkDerivation rec {
+in mkDerivation {
   version = "18.3.4.8";
   sha256 = "16c0h25hh5yvkv436ks5jbd7qmxzb6ndvk64mr404347a20iib0g";
 
diff --git a/pkgs/development/interpreters/erlang/R19.nix b/pkgs/development/interpreters/erlang/R19.nix
index 25a3f662565c..d5f3afe5f3df 100644
--- a/pkgs/development/interpreters/erlang/R19.nix
+++ b/pkgs/development/interpreters/erlang/R19.nix
@@ -1,6 +1,6 @@
 { mkDerivation, fetchpatch }:
 
-mkDerivation rec {
+mkDerivation {
   version = "19.3.6.11";
   sha256 = "0b02iv8dly1vkc2xnqqi030sdj34h4gji2h4qgilllajr1f868vm";
 
diff --git a/pkgs/development/interpreters/erlang/R20.nix b/pkgs/development/interpreters/erlang/R20.nix
index 016e175d6b56..3a33e55767b4 100644
--- a/pkgs/development/interpreters/erlang/R20.nix
+++ b/pkgs/development/interpreters/erlang/R20.nix
@@ -1,6 +1,6 @@
 { mkDerivation }:
 
-mkDerivation rec {
+mkDerivation {
   version = "20.3.8.9";
   sha256 = "0v2iiyzss8hiih98wvj0gi2qzdmmhh7bvc9p025wlfm4k7r1109a";
 
diff --git a/pkgs/development/interpreters/erlang/R21.nix b/pkgs/development/interpreters/erlang/R21.nix
index e21bf6dafbff..fdd034fc6075 100644
--- a/pkgs/development/interpreters/erlang/R21.nix
+++ b/pkgs/development/interpreters/erlang/R21.nix
@@ -1,6 +1,6 @@
 { mkDerivation }:
 
-mkDerivation rec {
+mkDerivation {
   version = "21.3.8.3";
   sha256 = "1szybirrcpqsl2nmlmpbkxjqnm6i7l7bma87m5cpwi0kpvlxwmcw";
 
diff --git a/pkgs/development/interpreters/erlang/R22.nix b/pkgs/development/interpreters/erlang/R22.nix
index a8c05513c5a6..8b471f632471 100644
--- a/pkgs/development/interpreters/erlang/R22.nix
+++ b/pkgs/development/interpreters/erlang/R22.nix
@@ -1,6 +1,6 @@
 { mkDerivation }:
 
-mkDerivation rec {
+mkDerivation {
   version = "22.0.4";
   sha256 = "1aqkhd6nwdn4xp5yz02zbymd4x8ij8fjw9ji8kh860n1a513k9ai";
 
diff --git a/pkgs/development/interpreters/falcon/default.nix b/pkgs/development/interpreters/falcon/default.nix
index 744a0f76ff09..39d4918a70bf 100644
--- a/pkgs/development/interpreters/falcon/default.nix
+++ b/pkgs/development/interpreters/falcon/default.nix
@@ -1,6 +1,6 @@
 { stdenv, fetchFromGitHub, cmake, pkgconfig, pcre, zlib, sqlite }:
 
-stdenv.mkDerivation rec {
+stdenv.mkDerivation {
   pname = "falcon";
   version = "2013-09-19";
 
diff --git a/pkgs/development/interpreters/love/0.10.nix b/pkgs/development/interpreters/love/0.10.nix
index 07ce9347cf70..bba54c83f5c5 100644
--- a/pkgs/development/interpreters/love/0.10.nix
+++ b/pkgs/development/interpreters/love/0.10.nix
@@ -8,7 +8,7 @@ let
   version = "0.10.2";
 in
 
-stdenv.mkDerivation rec {
+stdenv.mkDerivation {
   name = "${pname}-${version}";
   src = fetchFromBitbucket {
     owner = "rude";
diff --git a/pkgs/development/interpreters/love/11.1.nix b/pkgs/development/interpreters/love/11.1.nix
index 7adaca7b8656..1c64c417cb0c 100644
--- a/pkgs/development/interpreters/love/11.1.nix
+++ b/pkgs/development/interpreters/love/11.1.nix
@@ -8,7 +8,7 @@ let
   version = "11.2";
 in
 
-stdenv.mkDerivation rec {
+stdenv.mkDerivation {
   name = "${pname}-${version}";
   src = fetchFromBitbucket {
     owner = "rude";
diff --git a/pkgs/development/interpreters/lua-5/filesystem.nix b/pkgs/development/interpreters/lua-5/filesystem.nix
index 0ac1fa30e2f8..64050ea95f87 100644
--- a/pkgs/development/interpreters/lua-5/filesystem.nix
+++ b/pkgs/development/interpreters/lua-5/filesystem.nix
@@ -1,6 +1,6 @@
 { stdenv, fetchurl, lua5 }:
 
-stdenv.mkDerivation rec {
+stdenv.mkDerivation {
   version = "1.6.2";
   pname = "lua-filesystem";
   isLibrary = true;
diff --git a/pkgs/development/interpreters/maude/default.nix b/pkgs/development/interpreters/maude/default.nix
index afd2627d20ec..e44209799a31 100644
--- a/pkgs/development/interpreters/maude/default.nix
+++ b/pkgs/development/interpreters/maude/default.nix
@@ -13,7 +13,7 @@ let
 
 in
 
-stdenv.mkDerivation rec {
+stdenv.mkDerivation {
   pname = "maude";
   inherit version;
 
diff --git a/pkgs/development/interpreters/metamath/default.nix b/pkgs/development/interpreters/metamath/default.nix
index cd325c949489..686cfee19a6d 100644
--- a/pkgs/development/interpreters/metamath/default.nix
+++ b/pkgs/development/interpreters/metamath/default.nix
@@ -1,6 +1,6 @@
 { stdenv, fetchFromGitHub, autoreconfHook }:
 
-stdenv.mkDerivation rec {
+stdenv.mkDerivation {
   pname = "metamath";
   version = "0.172";
 
diff --git a/pkgs/development/interpreters/pyrex/0.9.5.nix b/pkgs/development/interpreters/pyrex/0.9.5.nix
index 009f9b48ea4e..d8e687980aa7 100644
--- a/pkgs/development/interpreters/pyrex/0.9.5.nix
+++ b/pkgs/development/interpreters/pyrex/0.9.5.nix
@@ -2,7 +2,7 @@
 
 let version = "0.9.5.1.1"; in
 
-python2Packages.buildPythonPackage rec {
+python2Packages.buildPythonPackage {
   name = "pyrex-${version}";
 
   src = fetchurl {
diff --git a/pkgs/development/interpreters/pyrex/0.9.6.nix b/pkgs/development/interpreters/pyrex/0.9.6.nix
index d79cd58c1598..21b8a7da06eb 100644
--- a/pkgs/development/interpreters/pyrex/0.9.6.nix
+++ b/pkgs/development/interpreters/pyrex/0.9.6.nix
@@ -2,7 +2,7 @@
 
 let version = "0.9.6.4"; in
 
-python2Packages.buildPythonPackage rec {
+python2Packages.buildPythonPackage {
   name = "pyrex-${version}";
 
   src = fetchurl {
diff --git a/pkgs/development/interpreters/python/cpython/docs/2.7-html.nix b/pkgs/development/interpreters/python/cpython/docs/2.7-html.nix
index 73d1e0ea9fd7..e27959c05e8d 100644
--- a/pkgs/development/interpreters/python/cpython/docs/2.7-html.nix
+++ b/pkgs/development/interpreters/python/cpython/docs/2.7-html.nix
@@ -2,7 +2,7 @@
 
 { stdenv, fetchurl, lib }:
 
-stdenv.mkDerivation rec {
+stdenv.mkDerivation {
   name = "python27-docs-html-2.7.16";
   src = fetchurl {
     url = http://docs.python.org/ftp/python/doc/2.7.16/python-2.7.16-docs-html.tar.bz2;
diff --git a/pkgs/development/interpreters/python/cpython/docs/2.7-pdf-a4.nix b/pkgs/development/interpreters/python/cpython/docs/2.7-pdf-a4.nix
index 54c0954ae5d0..0226f7cd8809 100644
--- a/pkgs/development/interpreters/python/cpython/docs/2.7-pdf-a4.nix
+++ b/pkgs/development/interpreters/python/cpython/docs/2.7-pdf-a4.nix
@@ -2,7 +2,7 @@
 
 { stdenv, fetchurl, lib }:
 
-stdenv.mkDerivation rec {
+stdenv.mkDerivation {
   name = "python27-docs-pdf-a4-2.7.16";
   src = fetchurl {
     url = http://docs.python.org/ftp/python/doc/2.7.16/python-2.7.16-docs-pdf-a4.tar.bz2;
diff --git a/pkgs/development/interpreters/python/cpython/docs/2.7-pdf-letter.nix b/pkgs/development/interpreters/python/cpython/docs/2.7-pdf-letter.nix
index 059908029c0b..88d1a6931668 100644
--- a/pkgs/development/interpreters/python/cpython/docs/2.7-pdf-letter.nix
+++ b/pkgs/development/interpreters/python/cpython/docs/2.7-pdf-letter.nix
@@ -2,7 +2,7 @@
 
 { stdenv, fetchurl, lib }:
 
-stdenv.mkDerivation rec {
+stdenv.mkDerivation {
   name = "python27-docs-pdf-letter-2.7.16";
   src = fetchurl {
     url = http://docs.python.org/ftp/python/doc/2.7.16/python-2.7.16-docs-pdf-letter.tar.bz2;
diff --git a/pkgs/development/interpreters/python/cpython/docs/2.7-text.nix b/pkgs/development/interpreters/python/cpython/docs/2.7-text.nix
index 53c5aa3b629b..ea35e9fb6a35 100644
--- a/pkgs/development/interpreters/python/cpython/docs/2.7-text.nix
+++ b/pkgs/development/interpreters/python/cpython/docs/2.7-text.nix
@@ -2,7 +2,7 @@
 
 { stdenv, fetchurl, lib }:
 
-stdenv.mkDerivation rec {
+stdenv.mkDerivation {
   name = "python27-docs-text-2.7.16";
   src = fetchurl {
     url = http://docs.python.org/ftp/python/doc/2.7.16/python-2.7.16-docs-text.tar.bz2;
diff --git a/pkgs/development/interpreters/python/cpython/docs/3.7-html.nix b/pkgs/development/interpreters/python/cpython/docs/3.7-html.nix
index 5a6dcc63225e..45783eb82632 100644
--- a/pkgs/development/interpreters/python/cpython/docs/3.7-html.nix
+++ b/pkgs/development/interpreters/python/cpython/docs/3.7-html.nix
@@ -2,7 +2,7 @@
 
 { stdenv, fetchurl, lib }:
 
-stdenv.mkDerivation rec {
+stdenv.mkDerivation {
   name = "python37-docs-html-3.7.2";
   src = fetchurl {
     url = http://docs.python.org/ftp/python/doc/3.7.2/python-3.7.2-docs-html.tar.bz2;
diff --git a/pkgs/development/interpreters/python/cpython/docs/3.7-pdf-a4.nix b/pkgs/development/interpreters/python/cpython/docs/3.7-pdf-a4.nix
index a122d7519f5d..998af644c718 100644
--- a/pkgs/development/interpreters/python/cpython/docs/3.7-pdf-a4.nix
+++ b/pkgs/development/interpreters/python/cpython/docs/3.7-pdf-a4.nix
@@ -2,7 +2,7 @@
 
 { stdenv, fetchurl, lib }:
 
-stdenv.mkDerivation rec {
+stdenv.mkDerivation {
   name = "python37-docs-pdf-a4-3.7.2";
   src = fetchurl {
     url = http://docs.python.org/ftp/python/doc/3.7.2/python-3.7.2-docs-pdf-a4.tar.bz2;
diff --git a/pkgs/development/interpreters/python/cpython/docs/3.7-pdf-letter.nix b/pkgs/development/interpreters/python/cpython/docs/3.7-pdf-letter.nix
index 4473f2e351c4..1c6aea5ee3c1 100644
--- a/pkgs/development/interpreters/python/cpython/docs/3.7-pdf-letter.nix
+++ b/pkgs/development/interpreters/python/cpython/docs/3.7-pdf-letter.nix
@@ -2,7 +2,7 @@
 
 { stdenv, fetchurl, lib }:
 
-stdenv.mkDerivation rec {
+stdenv.mkDerivation {
   name = "python37-docs-pdf-letter-3.7.2";
   src = fetchurl {
     url = http://docs.python.org/ftp/python/doc/3.7.2/python-3.7.2-docs-pdf-letter.tar.bz2;
diff --git a/pkgs/development/interpreters/python/cpython/docs/3.7-text.nix b/pkgs/development/interpreters/python/cpython/docs/3.7-text.nix
index d9d21bfe3a57..32388780f6ff 100644
--- a/pkgs/development/interpreters/python/cpython/docs/3.7-text.nix
+++ b/pkgs/development/interpreters/python/cpython/docs/3.7-text.nix
@@ -2,7 +2,7 @@
 
 { stdenv, fetchurl, lib }:
 
-stdenv.mkDerivation rec {
+stdenv.mkDerivation {
   name = "python37-docs-text-3.7.2";
   src = fetchurl {
     url = http://docs.python.org/ftp/python/doc/3.7.2/python-3.7.2-docs-text.tar.bz2;
diff --git a/pkgs/development/interpreters/python/cpython/docs/template.nix b/pkgs/development/interpreters/python/cpython/docs/template.nix
index 4a0c84fb272e..3cc0c2a9ee85 100644
--- a/pkgs/development/interpreters/python/cpython/docs/template.nix
+++ b/pkgs/development/interpreters/python/cpython/docs/template.nix
@@ -2,7 +2,7 @@
 
 { stdenv, fetchurl, lib }:
 
-stdenv.mkDerivation rec {
+stdenv.mkDerivation {
   name = "pythonMAJORMINOR-docs-TYPE-VERSION";
   src = fetchurl {
     url = URL;
diff --git a/pkgs/development/interpreters/python/pypy/default.nix b/pkgs/development/interpreters/python/pypy/default.nix
index 3e86ddef4ed4..8154a87f667d 100644
--- a/pkgs/development/interpreters/python/pypy/default.nix
+++ b/pkgs/development/interpreters/python/pypy/default.nix
@@ -17,7 +17,7 @@ with stdenv.lib;
 
 let
   isPy3k = substring 0 1 pythonVersion == "3";
-  passthru = passthruFun rec {
+  passthru = passthruFun {
     inherit self sourceVersion pythonVersion packageOverrides;
     implementation = "pypy";
     libPrefix = "pypy${pythonVersion}";
diff --git a/pkgs/development/interpreters/python/pypy/prebuilt.nix b/pkgs/development/interpreters/python/pypy/prebuilt.nix
index af933f0a4bd0..aa709bdc646d 100644
--- a/pkgs/development/interpreters/python/pypy/prebuilt.nix
+++ b/pkgs/development/interpreters/python/pypy/prebuilt.nix
@@ -27,7 +27,7 @@ with stdenv.lib;
 
 let
   isPy3k = majorVersion == "3";
-  passthru = passthruFun rec {
+  passthru = passthruFun {
     inherit self sourceVersion pythonVersion packageOverrides;
     implementation = "pypy";
     libPrefix = "pypy${pythonVersion}";
diff --git a/pkgs/development/interpreters/qnial/default.nix b/pkgs/development/interpreters/qnial/default.nix
index 3b41e14be850..d49886da8f54 100644
--- a/pkgs/development/interpreters/qnial/default.nix
+++ b/pkgs/development/interpreters/qnial/default.nix
@@ -1,6 +1,6 @@
 { stdenv, fetchFromGitHub, unzip, pkgconfig, makeWrapper, ncurses }:
 
-stdenv.mkDerivation rec {
+stdenv.mkDerivation {
   pname = "qnial";
   version = "6.3";
 
diff --git a/pkgs/development/interpreters/racket/default.nix b/pkgs/development/interpreters/racket/default.nix
index 35bd1729866e..f13adc21d9e6 100644
--- a/pkgs/development/interpreters/racket/default.nix
+++ b/pkgs/development/interpreters/racket/default.nix
@@ -49,7 +49,7 @@ stdenv.mkDerivation rec {
   version = "7.3"; # always change at once with ./minimal.nix
 
   src = (stdenv.lib.makeOverridable ({ name, sha256 }:
-    fetchurl rec {
+    fetchurl {
       url = "https://mirror.racket-lang.org/installers/${version}/${name}-src.tgz";
       inherit sha256;
     }
diff --git a/pkgs/development/interpreters/ruby/patchsets.nix b/pkgs/development/interpreters/ruby/patchsets.nix
index 47d8397c9668..c9731331b79e 100644
--- a/pkgs/development/interpreters/ruby/patchsets.nix
+++ b/pkgs/development/interpreters/ruby/patchsets.nix
@@ -1,6 +1,6 @@
 { patchSet, useRailsExpress, ops, patchLevel }:
 
-rec {
+{
   "2.3.8" = ops useRailsExpress [
     "${patchSet}/patches/ruby/2.3/head/railsexpress/01-skip-broken-tests.patch"
     "${patchSet}/patches/ruby/2.3/head/railsexpress/02-improve-gc-stats.patch"
diff --git a/pkgs/development/interpreters/self/default.nix b/pkgs/development/interpreters/self/default.nix
index c6c8caa7cf3e..43f5758e4c49 100644
--- a/pkgs/development/interpreters/self/default.nix
+++ b/pkgs/development/interpreters/self/default.nix
@@ -1,6 +1,6 @@
 { fetchgit, stdenv, xorg, makeWrapper, ncurses, cmake }:
 
-stdenv.mkDerivation rec {
+stdenv.mkDerivation {
   # The Self wrapper stores source in $XDG_DATA_HOME/self or ~/.local/share/self 
   # so that it can be written to when using the Self transposer. Running 'Self'
   # after installation runs without an image. You can then build a Self image with:
diff --git a/pkgs/development/interpreters/spidermonkey/1.8.5.nix b/pkgs/development/interpreters/spidermonkey/1.8.5.nix
index e00af6213479..8f9477c4c4ac 100644
--- a/pkgs/development/interpreters/spidermonkey/1.8.5.nix
+++ b/pkgs/development/interpreters/spidermonkey/1.8.5.nix
@@ -1,6 +1,6 @@
 { stdenv, lib, autoconf213, fetchurl, fetchpatch, pkgconfig, nspr, perl, python2, zip }:
 
-stdenv.mkDerivation rec {
+stdenv.mkDerivation {
   pname = "spidermonkey";
   version = "1.8.5";
 
diff --git a/pkgs/development/interpreters/spidermonkey/52.nix b/pkgs/development/interpreters/spidermonkey/52.nix
index 1e1ea10ef6dd..238afd4bd040 100644
--- a/pkgs/development/interpreters/spidermonkey/52.nix
+++ b/pkgs/development/interpreters/spidermonkey/52.nix
@@ -2,7 +2,7 @@
 
 let
   version = "52.9.0";
-in stdenv.mkDerivation rec {
+in stdenv.mkDerivation {
   pname = "spidermonkey";
   inherit version;
 
diff --git a/pkgs/development/interpreters/spidermonkey/60.nix b/pkgs/development/interpreters/spidermonkey/60.nix
index 175b2f2e7671..f62638dd8386 100644
--- a/pkgs/development/interpreters/spidermonkey/60.nix
+++ b/pkgs/development/interpreters/spidermonkey/60.nix
@@ -5,7 +5,7 @@ with stdenv.lib;
 
 let
   version = "60.4.0";
-in stdenv.mkDerivation rec {
+in stdenv.mkDerivation {
   pname = "spidermonkey";
   inherit version;
 
diff --git a/pkgs/development/interpreters/tcl/generic.nix b/pkgs/development/interpreters/tcl/generic.nix
index d4ec1677bfbc..3c585c3f07fa 100644
--- a/pkgs/development/interpreters/tcl/generic.nix
+++ b/pkgs/development/interpreters/tcl/generic.nix
@@ -5,7 +5,7 @@
 , ...
 }:
 
-stdenv.mkDerivation rec {
+stdenv.mkDerivation {
   pname = "tcl";
   inherit version;
 
diff --git a/pkgs/development/interpreters/unicon-lang/default.nix b/pkgs/development/interpreters/unicon-lang/default.nix
index 30ea124cf4bb..bb4a2d01499d 100644
--- a/pkgs/development/interpreters/unicon-lang/default.nix
+++ b/pkgs/development/interpreters/unicon-lang/default.nix
@@ -1,6 +1,6 @@
 { stdenv, fetchurl, unzip, libX11, libXt }:
 
-stdenv.mkDerivation rec {
+stdenv.mkDerivation {
   pname = "unicon-lang";
   version = "11.7";
   src = fetchurl {
diff --git a/pkgs/development/interpreters/wasmtime/default.nix b/pkgs/development/interpreters/wasmtime/default.nix
index 90fc38afa061..b53b3ed9dbfb 100644
--- a/pkgs/development/interpreters/wasmtime/default.nix
+++ b/pkgs/development/interpreters/wasmtime/default.nix
@@ -1,6 +1,6 @@
 { rustPlatform, fetchFromGitHub, lib, python, cmake, llvmPackages, clang }:
 
-rustPlatform.buildRustPackage rec {
+rustPlatform.buildRustPackage {
   pname = "wasmtime";
   version = "20190521";