Python: move interpreters

Move Python interpreters (CPython, PyPy) to same folder and share
layout.

pkgs/development/interpreters/pypy/default.nix pkgs/development/interpreters/python/pypy/2.7/default.nix

···
       inherit zlibSupport libPrefix;
       executable = "pypy";
       isPypy = true;
-      buildEnv = callPackage ../python/wrapper.nix { python = self; };
+      buildEnv = callPackage ../../wrapper.nix { python = self; };
       interpreter = "${self}/bin/${executable}";
       sitePackages = "site-packages";
-      withPackages = import ../python/with-packages.nix { inherit buildEnv; pythonPackages = pypyPackages; };
+      withPackages = import ../../with-packages.nix { inherit buildEnv; pythonPackages = pypyPackages; };
     };
 
     enableParallelBuilding = true;  # almost no parallelization without STM

pkgs/development/interpreters/python/2.6/default.nix pkgs/development/interpreters/python/cpython/2.6/default.nix

···
       inherit zlibSupport;
       isPy2 = true;
       isPy26 = true;
-      buildEnv = callPackage ../wrapper.nix { python = self; };
-      withPackages = import ../with-packages.nix { inherit buildEnv; pythonPackages = python26Packages; };
+      buildEnv = callPackage ../../wrapper.nix { python = self; };
+      withPackages = import ../../with-packages.nix { inherit buildEnv; pythonPackages = python26Packages; };
       libPrefix = "python${majorVersion}";
       executable = libPrefix;
       sitePackages = "lib/${libPrefix}/site-packages";

pkgs/development/interpreters/python/2.7/default.nix pkgs/development/interpreters/python/cpython/2.7/default.nix

···
       inherit zlibSupport;
       isPy2 = true;
       isPy27 = true;
-      buildEnv = callPackage ../wrapper.nix { python = self; };
-      withPackages = import ../with-packages.nix { inherit buildEnv; pythonPackages = python27Packages; };
+      buildEnv = callPackage ../../wrapper.nix { python = self; };
+      withPackages = import ../../with-packages.nix { inherit buildEnv; pythonPackages = python27Packages; };
       libPrefix = "python${majorVersion}";
       executable = libPrefix;
       sitePackages = "lib/${libPrefix}/site-packages";

pkgs/development/interpreters/python/3.3/default.nix pkgs/development/interpreters/python/cpython/3.3/default.nix

···
     tkSupport = (tk != null) && (tcl != null) && (libX11 != null) && (xproto != null);
     libPrefix = "python${majorVersion}";
     executable = "python3.3m";
-    buildEnv = callPackage ../wrapper.nix { python = self; };
-    withPackages = import ../with-packages.nix { inherit buildEnv; pythonPackages = python33Packages; };
+    buildEnv = callPackage ../../wrapper.nix { python = self; };
+    withPackages = import ../../with-packages.nix { inherit buildEnv; pythonPackages = python33Packages; };
     isPy3 = true;
     isPy33 = true;
     is_py3k = true;  # deprecated

pkgs/development/interpreters/python/3.4/default.nix pkgs/development/interpreters/python/cpython/3.4/default.nix

···
     tkSupport = (tk != null) && (tcl != null) && (libX11 != null) && (xproto != null);
     libPrefix = "python${majorVersion}";
     executable = "python3.4m";
-    buildEnv = callPackage ../wrapper.nix { python = self; };
-    withPackages = import ../with-packages.nix { inherit buildEnv; pythonPackages = python34Packages; };
+    buildEnv = callPackage ../../wrapper.nix { python = self; };
+    withPackages = import ../../with-packages.nix { inherit buildEnv; pythonPackages = python34Packages; };
     isPy3 = true;
     isPy34 = true;
     is_py3k = true;  # deprecated

pkgs/development/interpreters/python/3.5/default.nix pkgs/development/interpreters/python/cpython/3.5/default.nix

···
     tkSupport = (tk != null) && (tcl != null) && (libX11 != null) && (xproto != null);
     libPrefix = "python${majorVersion}";
     executable = "python${majorVersion}m";
-    buildEnv = callPackage ../wrapper.nix { python = self; };
-    withPackages = import ../with-packages.nix { inherit buildEnv; pythonPackages = python35Packages; };
+    buildEnv = callPackage ../../wrapper.nix { python = self; };
+    withPackages = import ../../with-packages.nix { inherit buildEnv; pythonPackages = python35Packages; };
     isPy3 = true;
     isPy35 = true;
     is_py3k = true;  # deprecated

pkgs/development/interpreters/python/3.6/default.nix pkgs/development/interpreters/python/cpython/3.6/default.nix

···
     tkSupport = (tk != null) && (tcl != null) && (libX11 != null) && (xproto != null);
     libPrefix = "python${majorVersion}";
     executable = "python${majorVersion}m";
-    buildEnv = callPackage ../wrapper.nix { python = self; };
-    withPackages = import ../with-packages.nix { inherit buildEnv; pythonPackages = python36Packages; };
+    buildEnv = callPackage ../../wrapper.nix { python = self; };
+    withPackages = import ../../with-packages.nix { inherit buildEnv; pythonPackages = python36Packages; };
     isPy3 = true;
     isPy35 = true;
     is_py3k = true;  # deprecated

pkgs/top-level/all-packages.nix

···
   python2Packages = python27Packages;
   python3Packages = python35Packages;
 
-  python26 = callPackage ../development/interpreters/python/2.6 {
+  python26 = callPackage ../development/interpreters/python/cpython/2.6 {
     db = db47;
     self = python26;
   };
-  python27 = callPackage ../development/interpreters/python/2.7 {
+  python27 = callPackage ../development/interpreters/python/cpython/2.7 {
     self = python27;
     inherit (darwin) CF configd;
   };
-  python33 = callPackage ../development/interpreters/python/3.3 {
+  python33 = callPackage ../development/interpreters/python/cpython/3.3 {
     self = python33;
   };
-  python34 = hiPrio (callPackage ../development/interpreters/python/3.4 {
+  python34 = hiPrio (callPackage ../development/interpreters/python/cpython/3.4 {
     inherit (darwin) CF configd;
     self = python34;
   });
-  python35 = hiPrio (callPackage ../development/interpreters/python/3.5 {
+  python35 = hiPrio (callPackage ../development/interpreters/python/cpython/3.5 {
     inherit (darwin) CF configd;
     self = python35;
   });
-  python36 = callPackage ../development/interpreters/python/3.6 {
+  python36 = callPackage ../development/interpreters/python/cpython/3.6 {
     inherit (darwin) CF configd;
     self = python36;
   };
-  pypy = callPackage ../development/interpreters/pypy {
-    self = pypy;
+
+  pypy = pypy27;
+
+  pypy27 = callPackage ../development/interpreters/python/pypy/2.7 {
+    self = pypy27;
   };
 
   pythonFull = python2Full;
···
 
   python2nix = callPackage ../tools/package-management/python2nix { };
 
-  pythonDocs = recurseIntoAttrs (callPackage ../development/interpreters/python/docs {});
+  pythonDocs = recurseIntoAttrs (callPackage ../development/interpreters/python/cpython/docs {});
 
   pypi2nix = callPackage ../development/tools/pypi2nix { python = python35; };