treewide: random cleanups

pkgs/applications/misc/ranger/default.nix

@@ -43,7 +43,7 @@ python3Packages.buildPythonApplication rec {
 
     # give image previews out of the box when building with w3m
     substituteInPlace ranger/config/rc.conf \
-      --replace "set preview_images false" "set preview_images true" \
+      --replace "set preview_images false" "set preview_images true"
   '';
 
   meta =  with stdenv.lib; {

pkgs/build-support/release/binary-tarball.nix

@@ -27,11 +27,11 @@ stdenv.mkDerivation (
     postPhases = "finalPhase";
   }
 
-  // args // 
+  // args //
 
   {
     name = name + (if src ? version then "-" + src.version else "");
-  
+
     postHook = ''
       mkdir -p $out/nix-support
       echo "$system" > $out/nix-support/system
@@ -43,7 +43,7 @@ stdenv.mkDerivation (
       if test -e $origSrc/nix-support/hydra-release-name; then
           releaseName=$(cat $origSrc/nix-support/hydra-release-name)
       fi
-      
+
       installFlagsArray=(DESTDIR=$TMPDIR/inst)
 
       # Prefix hackery because of a bug in stdenv (it tries to `mkdir
@@ -62,18 +62,18 @@ stdenv.mkDerivation (
         tar cvfj $out/tarballs/''${releaseName:-binary-dist}.tar.bz2 -C $TMPDIR/inst .
       '';
 
-                
+
     finalPhase =
       ''
         for i in $out/tarballs/*; do
             echo "file binary-dist $i" >> $out/nix-support/hydra-build-products
         done
-        
+
         # Propagate the release name of the source tarball.  This is
         # to get nice package names in channels.
         test -n "$releaseName" && (echo "$releaseName" >> $out/nix-support/hydra-release-name)
       '';
-    
+
 
     meta = (if args ? meta then args.meta else {}) // {
       description = "Build of a generic binary distribution";

pkgs/development/libraries/ffmpeg/generic.nix

@@ -194,11 +194,11 @@ stdenv.mkDerivation rec {
     description = "A complete, cross-platform solution to record, convert and stream audio and video";
     homepage = http://www.ffmpeg.org/;
     longDescription = ''
-      FFmpeg is the leading multimedia framework, able to decode, encode, transcode, 
-      mux, demux, stream, filter and play pretty much anything that humans and machines 
-      have created. It supports the most obscure ancient formats up to the cutting edge. 
-      No matter if they were designed by some standards committee, the community or 
-      a corporation. 
+      FFmpeg is the leading multimedia framework, able to decode, encode, transcode,
+      mux, demux, stream, filter and play pretty much anything that humans and machines
+      have created. It supports the most obscure ancient formats up to the cutting edge.
+      No matter if they were designed by some standards committee, the community or
+      a corporation.
     '';
     license = licenses.gpl3;
     platforms = platforms.all;

pkgs/development/python-modules/arxiv2bib/default.nix

@@ -14,7 +14,6 @@ buildPythonPackage rec {
     sha256 = "1kp2iyx20lpc9dv4qg5fgwf83a1wx6f7hj1ldqyncg0kn9xcrhbg";
   };
 
-  # Required for tests only
   checkInputs = [ mock ];
 
   checkPhase = "${python.interpreter} -m unittest discover -s tests";

pkgs/development/python-modules/markdown/default.nix

@@ -25,4 +25,4 @@ buildPythonPackage rec {
     homepage = https://github.com/Python-Markdown/markdown;
     license = lib.licenses.bsd3;
   };
-}
+}

pkgs/servers/dns/knot-resolver/default.nix

@@ -83,4 +83,3 @@ wrapped-full = with luajitPackages; let
   '';
 
 in result
-