Merge pull request #80 from reinout/empty-eggs-interpreter-fix

Empty "eggs=" interpreter fix. Fixes #79

src/zc/buildout/easy_install.py

@@ -1168,6 +1168,8 @@ def _pyscript(path, dest, rsetup, initialization=''):
         dest += '-script.py'
 
     python = _safe_arg(sys.executable)
+    if path:
+        path += ','  # Courtesy comma at the end of the list.
 
     contents = py_script_template % dict(
         python = python,
@@ -1202,7 +1204,7 @@ py_script_template = script_header + '''\
 import sys
 
 sys.path[0:0] = [
-  %(path)s,
+  %(path)s
   ]
 %(initialization)s
 

src/zc/buildout/easy_install.txt

@@ -677,6 +677,20 @@ module:
     >>> print_(system(join(bin, 'py')+' -m pdb what'), end='')
     Error: what does not exist
 
+An interpreter can also be generated without other eggs:
+
+    >>> scripts = zc.buildout.easy_install.scripts(
+    ...     [], [], sys.executable, bin, interpreter='py')
+    >>> cat(bin, 'py') # doctest: +NORMALIZE_WHITESPACE +ELLIPSIS
+    #!/usr/local/bin/python2.7
+    <BLANKLINE>
+    import sys
+    <BLANKLINE>
+    sys.path[0:0] = [
+    <BLANKLINE>
+      ]
+    ...
+
 An additional argument can be passed to define which scripts to install
 and to provide script names. The argument is a dictionary mapping
 original script names to new script names.