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Diffstat (limited to 'docs/deprecated/functionalities.rst')
-rw-r--r-- | docs/deprecated/functionalities.rst | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/docs/deprecated/functionalities.rst b/docs/deprecated/functionalities.rst new file mode 100644 index 0000000..7213c5d --- /dev/null +++ b/docs/deprecated/functionalities.rst @@ -0,0 +1,33 @@ +"Eggsecutable" Scripts +---------------------- + +.. deprecated:: 45.3.0 + +Occasionally, there are situations where it's desirable to make an ``.egg`` +file directly executable. You can do this by including an entry point such +as the following:: + + setup( + # other arguments here... + entry_points={ + "setuptools.installation": [ + "eggsecutable = my_package.some_module:main_func", + ] + } + ) + +Any eggs built from the above setup script will include a short executable +prelude that imports and calls ``main_func()`` from ``my_package.some_module``. +The prelude can be run on Unix-like platforms (including Mac and Linux) by +invoking the egg with ``/bin/sh``, or by enabling execute permissions on the +``.egg`` file. For the executable prelude to run, the appropriate version of +Python must be available via the ``PATH`` environment variable, under its +"long" name. That is, if the egg is built for Python 2.3, there must be a +``python2.3`` executable present in a directory on ``PATH``. + +IMPORTANT NOTE: Eggs with an "eggsecutable" header cannot be renamed, or +invoked via symlinks. They *must* be invoked using their original filename, in +order to ensure that, once running, ``pkg_resources`` will know what project +and version is in use. The header script will check this and exit with an +error if the ``.egg`` file has been renamed or is invoked via a symlink that +changes its base name. |