zpl*: Fix the attribute name of the license

This was simply a typo since the license was added in 2013.

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

@@ -16,6 +16,6 @@ buildPythonPackage rec {
   meta = with stdenv.lib; {
     description = "Scalable persistent components";
     homepage = http://packages.python.org/BTrees;
-    license = licenses.zpt21;
+    license = licenses.zpl21;
   };
 }

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

@@ -15,7 +15,7 @@ buildPythonPackage {
   meta = {
     homepage = http://www.buildout.org;
     description = "A software build and configuration system";
-    license = stdenv.lib.licenses.zpt21;
+    license = stdenv.lib.licenses.zpl21;
     maintainers = [ stdenv.lib.maintainers.goibhniu ];
   };
 }

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

@@ -32,7 +32,7 @@ stdenv.mkDerivation rec {
   meta = with stdenv.lib; {
     description = "Utilities to facilitate the installation of Python packages";
     homepage = http://pypi.python.org/pypi/setuptools;
-    license = with licenses; [ psfl zpt20 ];
+    license = with licenses; [ psfl zpl20 ];
     platforms = platforms.all;
     priority = 10;
   };

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

@@ -21,7 +21,7 @@ buildPythonPackage rec {
   meta = with stdenv.lib; {
     description = "Inter-process locks";
     homepage =  http://www.python.org/pypi/zc.lockfile;
-    license = licenses.zpt20;
+    license = licenses.zpl20;
     maintainers = with maintainers; [ goibhniu ];
   };
 }

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

@@ -24,7 +24,7 @@ buildPythonPackage rec {
   meta = with stdenv.lib; {
     description = "Structured Configuration Library";
     homepage = http://pypi.python.org/pypi/ZConfig;
-    license = licenses.zpt20;
+    license = licenses.zpl20;
     maintainers = [ maintainers.goibhniu ];
   };
 }

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

@@ -19,7 +19,7 @@ buildPythonPackage rec {
   meta = with stdenv.lib; {
     description = "Zope.Interface";
     homepage = http://zope.org/Products/ZopeInterface;
-    license = licenses.zpt20;
+    license = licenses.zpl20;
     maintainers = [ maintainers.goibhniu ];
   };
 }

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

@@ -26,7 +26,7 @@ buildPythonPackage rec {
   meta = with stdenv.lib; {
     description = "A flexible test runner with layer support";
     homepage = http://pypi.python.org/pypi/zope.testrunner;
-    license = licenses.zpt20;
+    license = licenses.zpl20;
     maintainers = [ maintainers.goibhniu ];
   };
 }