python315: init add 3.15.0a1

* `pkgs.python312Packages`

* `pkgs.python313Packages`

* `pkgs.python314Packages`

* `pkgs.python315Packages`

* `pkgs.pypy27Packages`

* `pkgs.pypy310Packages`

diff --git a/Lib/ctypes/util.py b/Lib/ctypes/util.py

index 378f12167c6..21710702e69 100644

--- a/Lib/ctypes/util.py

+++ b/Lib/ctypes/util.py

@@ -374,34 +374,7 @@ def find_library(name, is64 = False):

     else:

         def _findSoname_ldconfig(name):

-            import struct

-            if struct.calcsize('l') == 4:

-                machine = os.uname().machine + '-32'

-            else:

-                machine = os.uname().machine + '-64'

-            mach_map = {

-                'x86_64-64': 'libc6,x86-64',

-                'ppc64-64': 'libc6,64bit',

-                'sparc64-64': 'libc6,64bit',

-                's390x-64': 'libc6,64bit',

-                'ia64-64': 'libc6,IA-64',

-                }

-            abi_type = mach_map.get(machine, 'libc6')

-

-            # XXX assuming GLIBC's ldconfig (with option -p)

-            regex = r'\s+(lib%s\.[^\s]+)\s+\(%s'

-            regex = os.fsencode(regex % (re.escape(name), abi_type))

-            try:

-                with subprocess.Popen(['/sbin/ldconfig', '-p'],

-                                      stdin=subprocess.DEVNULL,

-                                      stderr=subprocess.DEVNULL,

-                                      stdout=subprocess.PIPE,

-                                      env={'LC_ALL': 'C', 'LANG': 'C'}) as p:

-                    res = re.search(regex, p.stdout.read())

-                    if res:

-                        return os.fsdecode(res.group(1))

-            except OSError:

-                pass

+            return None

         def _findLib_ld(name):

             # See issue #9998 for why this is needed

      hash = "sha256-Ipna5ULTlc44g6ygDTyRAwfNaOCy9zNgmMjnt+7p8+k=";

      inherit passthruFun;

    };

    python315 = callPackage ./cpython {

      self = __splicedPackages.python315;

      sourceVersion = {

        major = "3";

        minor = "15";

        patch = "0";

        suffix = "a1";

      };

      hash = "sha256-MZSTnUiO6u79z5kNNVQtmtHOeIeJxOIwWiBg63BY5aQ=";

      inherit passthruFun;

    };

    # Minimal versions of Python (built without optional dependencies)

    python3Minimal =

      (callPackage ./cpython (

    pythonAttr = "python314FreeThreading";

    enableGIL = false;

  };

  python315FreeThreading = python315.override {

    self = python315FreeThreading;

    pythonAttr = "python315FreeThreading";

    enableGIL = false;

  };

  pythonInterpreters = callPackage ./../development/interpreters/python { };

  inherit (pythonInterpreters)

    python312

    python313

    python314

    python315

    python3Minimal

    pypy27

    pypy310

  python312Packages = recurseIntoAttrs python312.pkgs;

  python313Packages = recurseIntoAttrs python313.pkgs;

  python314Packages = python314.pkgs;

  python315Packages = python315.pkgs;

  pypyPackages = pypy.pkgs;

  pypy2Packages = pypy2.pkgs;

  pypy27Packages = pypy27.pkgs;