pythonPackages: remove name attribute`

The `buildPython*` function computes name from `pname` and `version`.
This change removes `name` attribute from all expressions in
`pkgs/development/python-modules`.

While at it, some other minor changes were made as well, such as
replacing `fetchurl` calls with `fetchPypi`.

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

@@ -1,16 +1,15 @@
-{ stdenv, fetchurl, buildPythonPackage, swig, pcsclite, PCSC }:
+{ stdenv, fetchPypi, buildPythonPackage, swig, pcsclite, PCSC }:
 
 buildPythonPackage rec {
   version = "1.9.7";
   pname = "pyscard";
-  name = "${pname}-${version}";
 
-  src = fetchurl {
-    url = "mirror://pypi/p/pyscard/${name}.tar.gz";
+  src = fetchPypi {
+    inherit pname version;
     sha256 = "412c74c83e7401566e9d3d7b8b5ca965e74582a1f33179b3c1fabf1da73ebf80";
   };
 
-  patchPhase = ''
+  postPatch = ''
     sed -e 's!"libpcsclite\.so\.1"!"${pcsclite}/lib/libpcsclite.so.1"!' \
         -i smartcard/scard/winscarddll.c
   '';