You need to "import chimerax" first.

--Eric

On Aug 18, 2023, at 10:25 AM, BARRY E DEZONIA via ChimeraX-users <chimerax-users@cgl.ucsf.edu> wrote:

Thanks Eric. I have one issue. When I reference chimerax.app_dirs.user_data_dir in my tool ChimeraX complains that "chimerax" is undefined. Do you have a more correct way to find this path? Maybe you had a typo? Note that "ChimeraX" doesn't work either.
From: Eric Pettersen <pett@cgl.ucsf.edu>
Sent: Thursday, August 17, 2023 6:27 PM
To: BARRY E DEZONIA <barry.dezonia@wisc.edu>
Cc: ChimeraX Users Help <chimerax-users@cgl.ucsf.edu>
Subject: Re: [chimerax-users] Plugin development questions
 
Hi Barry,
The problem is that ChimeraX is installed as root on Linux and that a simple “setup.py install” tries to install into the app, which it does not have permission for.  You need to get it to install into a user-owned area that ChimeraX looks at for modules.  That directory is contained in chimerax.app_dirs.user_data_dir.  You get setup.py to install there with “setup.py install —home=value-from-app_dirs”.

—Eric

On Aug 17, 2023, at 1:18 PM, BARRY E DEZONIA via ChimeraX-users <chimerax-users@cgl.ucsf.edu> wrote:

Thanks for the help Eric.

I am pretty close to everything working but I think this traj2nmr install approach might be a dead end.

In my chimerax tool I have this at the beginning:


if importlib.util.find_spec('traj2nmr') is None:
    
    app_dir = pathlib.Path(__file__).parent.resolve()

    subprocess.run(["python3", app_dir / 'Installable' / 'install_traj2nmr.py', sys.executable])


Then in my install_traj2nmr.py file that gets called by the above code I have this:


this_files_dir = pathlib.Path(__file__).parent.resolve()

chimerax = sys.argv[1]

os.system(f"cd {this_files_dir}/traj2nmr; {chimerax} --nogui --script 'setup.py install' --exit")



And it ALMOST works. Unfortunately it seems that I might need sudo access to run that command. This is the info Chimera gives back when it tries to run my code:

/usr/lib/ucsf-chimerax-daily/lib/python3.9/site-packages/setuptools/__init__.py:85: _DeprecatedInstaller: setuptools.installer and fetch_build_eggs are deprecated. Requirements should be satisfied by a PEP 517 installer. If you are using pip, you can try `pip install --use-pep517`.
  dist.fetch_build_eggs(dist.setup_requires)
running install
/usr/lib/ucsf-chimerax-daily/lib/python3.9/site-packages/setuptools/command/install.py:34: SetuptoolsDeprecationWarning: setup.py install is deprecated. Use build and pip and other standards-based tools.
  warnings.warn(
/usr/lib/ucsf-chimerax-daily/lib/python3.9/site-packages/setuptools/command/easy_install.py:144: EasyInstallDeprecationWarning: easy_install command is deprecated. Use build and pip and other standards-based tools.
  warnings.warn(
error: can't create or remove files in install directory

The following error occurred while trying to add or remove files in the
installation directory:

    [Errno 13] Permission denied: '/usr/lib/ucsf-chimerax-daily/lib/python3.9/site-packages/test-easy-install-134656.write-test'


There is a paragraph of explanation saying maybe I need root access. So, am I at a dead end? Or can you think of a workaround? Thanks for any insight.

From: Eric Pettersen <pett@cgl.ucsf.edu>
Sent: Tuesday, August 15, 2023 6:18 PM
To: ChimeraX Users Help <chimerax-users@cgl.ucsf.edu>
Cc: BARRY E DEZONIA <barry.dezonia@wisc.edu>
Subject: Re: [chimerax-users] Plugin development questions
 

On Aug 15, 2023, at 4:11 PM, Eric Pettersen via ChimeraX-users <chimerax-users@cgl.ucsf.edu> wrote:

the traj2nmr executable module is importable

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