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"Post install setup does not work as expected with pip install"


I am able to get this to work.
I had to invoke parent's run before my post install logic could kick.

_____________________________________________
From: Saba Kauser
Sent: Tuesday, March 12, 2019 6:01 PM
To: python-list at python.org
Subject: "Post install setup does not work as expected with pip install"


Hello,

I have a post install class that looks like this:
if('darwin' in sys.platform):
    class PostInstall(install):
        """ Post installation - run install_name_tool on Darwin """
        def run(self):
            clipath = os.getenv('IBM_DB_HOME', '@loader_path/clidriver')
            print("in PostInstall with {}".format(clipath))
            for so in glob.glob(r'build/lib*/ibm_db*.so'):
                os.system("install_name_tool -change libdb2.dylib {}/lib/libdb2.dylib {}".format(clipath, so))
            install.run(self)
    cmd_class = dict(install = PostInstall)


And I pass cmd_class to setup(..) as:
setup(..
      include_package_data = True,
       cmdclass = cmd_class,
       **extra
     )

When I execute setup.py as "python setup.py install", then the PostInstall operation is executed after the ibm_db.so is built and installed and I see the intended result.
Howeever, when I run "pip install ibm_db" or "pip install .",
the execution order looks like this:
      warnings.warn(notifyString)
    running install
    in PostInstall with /Applications/dsdriver/  ==> this is my post install script
    running build
    running build_py
    creating build
    creating build/lib.macosx-10.9-x86_64-3.7    ==> I need to traverse to this folder to find my shared library

I would expect it to be run post the ibm_db is installed, not before it gets built.

Can you please let me know how can this be fixed. Is this a bug with pip?

--------------------------------------------------------------------
Saba Kauser
Db2 Connect development and support.

Rocket Software Development India Pvt Ltd
Karle Town Centre - SEZ,
HUB 1 building, 4th Floor (North West Wing),
100 ft. Kempapura road, adjacent to Nagawara lake,
Nagawara, Bangalore - 560 045
E: skauser at rocketsoftware.com<mailto:skauser at rocketsoftware.com>
---------------------------------------------------------------------


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