add doctest

zc.recipe.egg_/src/zc/recipe/egg/README.txt

@@ -172,6 +172,10 @@ relative-paths
    egg paths.  This option can be set in either the script section or
    in the buildout section.
 
+include-site-packages
+    If set to true, then generated scripts will ``import site`` to include
+    the site packages defined by the executable's site module.
+
 Let's add an interpreter option:
 
     >>> write(sample_buildout, 'buildout.cfg',
@@ -544,6 +548,110 @@ setting the path.  Note, as mentioned above, that leading whitespace
 has been stripped.  Similarly, the argument code we specified was
 added in the entry point call (to main).
 
+Including site packages
+-----------------------
+
+A specific kind of script initialization is available from an option:
+``include-site-packages``.  This option will include code that imports the
+current executable's site module, thus setting whatever site-packages are
+available.  This affects both custom generated scripts and interpreter
+scripts.
+
+    >>> write(sample_buildout, 'buildout.cfg',
+    ... """
+    ... [buildout]
+    ... parts = demo
+    ...
+    ... [demo]
+    ... recipe = zc.recipe.egg
+    ... find-links = %(server)s
+    ... index = %(server)s/index
+    ... scripts = demo=foo
+    ... interpreter = py
+    ... extra-paths =
+    ...    /foo/bar
+    ...    ${buildout:directory}/spam
+    ... include-site-packages = true
+    ... """ % dict(server=link_server))
+
+    >>> print system(buildout),
+    Uninstalling demo.
+    Installing demo.
+    Generated script '/sample-buildout/bin/foo'.
+    Generated interpreter '/sample-buildout/bin/py'.
+
+    >>> cat(sample_buildout, 'bin', 'foo') # doctest: +NORMALIZE_WHITESPACE
+    #!/usr/local/bin/python2.4 -S
+    <BLANKLINE>
+    import sys
+    sys.path[0:0] = [
+      '/sample-buildout/eggs/demo-0.4c1-pyN.N.egg',
+      '/sample-buildout/eggs/demoneeded-1.2c1-pyN.N.egg',
+      '/foo/bar',
+      '/sample-buildout/spam',
+      ]
+    # We have to import pkg_resources before namespace
+    # package .pth files are processed or else the distribution's namespace
+    # packages will mask all of the egg-based packages in the same namespace
+    # package.
+    try:
+      import pkg_resources
+    except ImportError:
+      pass
+    import site
+    <BLANKLINE>
+    <BLANKLINE>
+    import eggrecipedemo
+    <BLANKLINE>
+    if __name__ == '__main__':
+        eggrecipedemo.main()
+
+    >>> cat(sample_buildout, 'bin', 'py') # doctest: +NORMALIZE_WHITESPACE
+    #!/usr/local/bin/python2.4 -S
+    <BLANKLINE>
+    import sys
+    <BLANKLINE>
+    sys.path[0:0] = [
+      '/sample-buildout/eggs/demo-0.4c1-pyN.N.egg',
+      '/sample-buildout/eggs/demoneeded-1.2c1-pyN.N.egg',
+      '/foo/bar',
+      '/sample-buildout/spam',
+      ]
+    # We have to import pkg_resources before namespace
+    # package .pth files are processed or else the distribution's namespace
+    # packages will mask all of the egg-based packages in the same namespace
+    # package.
+    try:
+      import pkg_resources
+    except ImportError:
+      pass
+    import site
+    <BLANKLINE>
+    _interactive = True
+    if len(sys.argv) > 1:
+        _options, _args = __import__("getopt").getopt(sys.argv[1:], 'ic:m:')
+        _interactive = False
+        for (_opt, _val) in _options:
+            if _opt == '-i':
+                _interactive = True
+            elif _opt == '-c':
+                exec _val
+            elif _opt == '-m':
+                sys.argv[1:] = _args
+                _args = []
+                __import__("runpy").run_module(
+                     _val, {}, "__main__", alter_sys=True)
+    <BLANKLINE>
+        if _args:
+            sys.argv[:] = _args
+            __file__ = _args[0]
+            del _options, _args
+            execfile(__file__)
+    <BLANKLINE>
+    if _interactive:
+        del _interactive
+        __import__("code").interact(banner="", local=globals())
+
 Specifying entry points
 -----------------------