pkgs/servers: stdenv.lib -> lib

pkgs/servers/mail/postfix/default.nix

@@ -50,7 +50,7 @@ in stdenv.mkDerivation rec {
     ./relative-symlinks.patch
   ];
 
-  postPatch = stdenv.lib.optionalString (stdenv.hostPlatform != stdenv.buildPlatform) ''
+  postPatch = lib.optionalString (stdenv.hostPlatform != stdenv.buildPlatform) ''
     sed -e 's!bin/postconf!${buildPackages.postfix}/bin/postconf!' -i postfix-install
   '' + ''
     sed -e '/^PATH=/d' -i postfix-install

pkgs/servers/mail/postfix/pfixtools.nix

@@ -50,7 +50,7 @@ stdenv.mkDerivation {
     description = "A collection of postfix-related tools";
     license = with lib.licenses; [ bsd3 ];
     homepage = "https://github.com/Fruneau/pfixtools";
-    platforms = stdenv.lib.platforms.linux;
+    platforms = lib.platforms.linux;
     maintainers = with lib.maintainers; [ jerith666 ];
   };
 }

pkgs/servers/mail/postfix/pflogsumm.nix

@@ -1,4 +1,4 @@
-{ stdenv, fetchurl, perlPackages }:
+{ lib, stdenv, fetchurl, perlPackages }:
 
 perlPackages.buildPerlPackage rec {
   pname = "pflogsumm";
@@ -27,8 +27,8 @@ perlPackages.buildPerlPackage rec {
 
   meta = {
     homepage = "http://jimsun.linxnet.com/postfix_contrib.html";
-    maintainers = with stdenv.lib.maintainers; [ schneefux ];
+    maintainers = with lib.maintainers; [ schneefux ];
     description = "Postfix activity overview";
-    license = stdenv.lib.licenses.gpl2Plus;
+    license = lib.licenses.gpl2Plus;
   };
 }