Add support for running on PyPy.

gnupg/_meta.py

@@ -32,12 +32,18 @@ import encodings
 import locale
 import os
 import platform
-import psutil
 import shlex
 import subprocess
 import sys
 import threading
 
+## Using psutil is recommended, but since the extension doesn't run with the
+## PyPy interpreter, we'll run even if it's not present.
+try:
+    import psutil
+except ImportError:
+    psutil = None
+
 from . import _parsers
 from . import _util
 
@@ -81,10 +87,19 @@ class GPGMeta(type):
         the same. (Sorry Windows users; maybe you should switch to anything
         else.)
 
+        .. note: This function will only run if the psutil_ Python extension
+            is installed. Because psutil won't run with the PyPy interpreter,
+            use of it is optional (although highly recommended).
+
+        .. _psutil: https://pypi.python.org/pypi/psutil
+
         :returns: True if there exists a gpg-agent process running under the
                   same effective user ID as that of this program. Otherwise,
                   returns False.
         """
+        if not psutil:
+            return False
+
         this_process = psutil.Process(os.getpid())
         ownership_match = False
 

gnupg/_util.py

@@ -28,7 +28,6 @@ from time       import mktime
 import codecs
 import encodings
 import os
-import psutil
 import threading
 import random
 import re
@@ -418,7 +417,7 @@ def _make_passphrase(length=None, save=False, file=None):
     passphrase = _make_random_string(length)
 
     if save:
-        ruid, euid, suid = psutil.Process(os.getpid()).uids
+        ruid, euid, suid = os.getresuid()
         gid = os.getgid()
         now = mktime(localtime())
 

setup.py

@@ -22,11 +22,19 @@
 from __future__ import absolute_import
 from __future__ import print_function
 
+import platform
 import setuptools
 import sys
 import os
 import versioneer
 
+try:
+    import __pypy__
+except ImportError:
+    _isPyPy = False
+else:
+    _isPyPy = True
+
 
 versioneer.versionfile_source = 'gnupg/_version.py'
 versioneer.versionfile_build  = 'gnupg/_version.py'
@@ -75,6 +83,13 @@ def get_requirements():
         # Required to make `collections.OrderedDict` available on Python<=2.6
         requirements.append('ordereddict==1.1#a0ed854ee442051b249bfad0f638bbec')
 
+    # Don't try to install psutil on PyPy:
+    if _isPyPy:
+        for line in requirements[:]:
+            if line.startswith('psutil'):
+                print("Not installing %s on PyPy..." % line)
+                requirements.remove(line)
+
     return requirements, links
 
 
@@ -89,8 +104,8 @@ This module allows easy access to GnuPG's key management, encryption and \
 signature functionality from Python programs, by interacting with GnuPG \
 through file descriptors. Input arguments are strictly checked and sanitised, \
 and therefore this module should be safe to use in networked applications \
-requiring direct user input. It is intended for use with Python 2.6 or \
+requiring direct user input. It is intended for use on Windows, MacOS X, BSD, \
-greater.
+or Linux, with Python 2.6, Python 2.7, Python 3.3, Python 3.4, or PyPy.
 """,
     license="GPLv3+",
 
@@ -119,7 +134,13 @@ greater.
     classifiers=[
         "Development Status :: 5 - Production/Stable",
         "Intended Audience :: Developers",
+        "Intended Audience :: System Administrators",
         "License :: OSI Approved :: GNU General Public License v3 or later (GPLv3+)",
+        "Operating System :: Android",
+        "Operating System :: MacOS :: MacOS X",
+        "Operating System :: Microsoft :: Windows",
+        "Operating System :: POSIX :: BSD",
+        "Operating System :: POSIX :: Linux",
         "Programming Language :: Python",
         "Programming Language :: Python :: 2",
         "Programming Language :: Python :: 3",
@@ -127,6 +148,8 @@ greater.
         "Programming Language :: Python :: 2.7",
         "Programming Language :: Python :: 3.3",
         "Programming Language :: Python :: 3.4",
+        "Programming Language :: Python :: Implementation :: CPython",
+        "Programming Language :: Python :: Implementation :: PyPy",
         "Topic :: Security :: Cryptography",
         "Topic :: Software Development :: Libraries :: Python Modules",
         "Topic :: Utilities",]