PYTHONPATH problem on MacOS Sierra about cadabra2

[kpeeters]

You need to give a bit more detail. Did you do all the brew install steps in the installation instructions? Are you perhaps on a system that also has Anaconda installed?

[dchorazkiewicz]

Hi,

I have done all brew install without errors and yes I have anaconda. Is this a problem ? Shell I uninstall it?
My current PYTHONPATH variable is empty. Bellow you can find a ls|grep from brew installation

wrouser:Cellar user$ pwd
/usr/local/Cellar
wrouser:Cellar user$ ls -l |grep python
drwxr-xr-x 3 user admin 102 Apr 24 10:33 boost-python
drwxr-xr-x 3 user admin 102 Apr 24 10:06 python
drwxr-xr-x 3 user admin 102 Apr 24 10:00 python3
wrouser:Cellar user$

[kpeeters]

The problem is probably that the Anaconda python is first in your PATH, or that /usr/local/bin/python3 is a symlink to the Anaconda python. What do you get if you do
which python3 from a terminal? In order to change this, you need to make sure that /usr/local/Cellar/bin/python3 is picked up when you type python3.

[dchorazkiewicz]

You are right!
wrouser:Cellar user$ which python3
/Users/user/anaconda/bin/python3
wrouser:Cellar user$

Do you know how to change it to brew instalattion?

[kpeeters]

Your ~/.bashrc file probably has a modification which puts the Anaconda path in. Strip that out and it will work. Alternatively, do

export PATH=/usr/local/Cellar/bin:${PATH}

in the terminal before you run the Cadabra configuration/build/install steps.

[dchorazkiewicz]

Better, installation has finished but...

wrouser:build user$ cadabra2-gtk

(process:2455): Gtk-WARNING **: Locale not supported by C library.
Using the fallback 'C' locale.
2017-04-24 14:23:38.380 cadabra2-gtk[2455:336975] *** WARNING: Method userSpaceScaleFactor in class NSView is deprecated on 10.7 and later. It should not be used in new applications. Use convertRectToBacking: instead.
cadabra-client: spawning server

(cadabra2-gtk:2455): Gdk-WARNING **: GdkQuartzDisplay does not implement the monitor vfuncs
libc++abi.dylib: terminating with uncaught exception of type std::runtime_error: Traceback (most recent call last):
File "", line 1, in
File "/usr/local/opt/python3/Frameworks/Python.framework/Versions/3.6/lib/python3.6/imp.py", line 296, in find_module
raise ImportError(_ERR_MSG.format(name), name=name)
ImportError: No module named 'cadabra2_defaults'

libc++abi.dylib: terminating with uncaught exception of type std::logic_error: Failed to read port from server.
Abort trap: 6
wrouser:build user$ cadabra2
Traceback (most recent call last):
File "/usr/local/bin/cadabra2", line 23, in
from cadabra2 import *
ModuleNotFoundError: No module named 'cadabra2'
wrouser:build user$

[dchorazkiewicz]

Why those line are present

Install the project...
-- Install configuration: ""
-- Installing: /Users/user/anaconda/lib/python3.6/site-packages/cadabra2.so
-- Installing: /Users/user/anaconda/lib/python3.6/site-packages/cadabra2_defaults.py

It want to use anaconda but currently
which python3
/usr/local/bin/python3

[kpeeters]

Can you erase the build directory completely, then re-run cmake .. and see what the line -- Python site path at... says?

[dchorazkiewicz]

Yeah!

I have copied those two file to site-packages to
/usr/local/Cellar/python3/3.6.1/Frameworks/Python.framework/Versions/3.6./lib/python3.6/site-packages and i have GUI with WARNINGs:

cadabra2-gtk

(process:2528): Gtk-WARNING **: Locale not supported by C library.
Using the fallback 'C' locale.
2017-04-24 14:37:04.098 cadabra2-gtk[2528:373095] *** WARNING: Method userSpaceScaleFactor in class NSView is deprecated on 10.7 and later. It should not be used in new applications. Use convertRectToBacking: instead.
cadabra-client: spawning server

(cadabra2-gtk:2528): Gdk-WARNING **: GdkQuartzDisplay does not implement the monitor vfuncs
cadabra-client: connect done
wrochorazkiewiczd:build chorazkiewiczd$ cadabra2-gtk

(process:2532): Gtk-WARNING **: Locale not supported by C library.
Using the fallback 'C' locale.
2017-04-24 14:37:28.911 cadabra2-gtk[2532:375754] *** WARNING: Method userSpaceScaleFactor in class NSView is deprecated on 10.7 and later. It should not be used in new applications. Use convertRectToBacking: instead.
cadabra-client: spawning server

(cadabra2-gtk:2532): Gdk-WARNING **: GdkQuartzDisplay does not implement the monitor vfuncs
cadabra-client: connect done

I need to test some notebooks

[dchorazkiewicz]

-- Found python /usr/local/opt/python3/Frameworks/Python.framework/Versions/3.6/lib/libpython3.6.dylib
-- Python include dirs: /usr/local/Cellar/python3/3.6.1/Frameworks/Python.framework/Versions/3.6/include/python3.6m
-- Python site path at /Users/chorazkiewiczd/anaconda/lib/python3.6/site-packages

and Schwarzschild notebook run correctly :). I do not know why but under linux latex rendering is much faster!

[kpeeters]

Ok, those warnings are not show-stoppers, I get them myself as well, has to do with gtk, not cadabra.

Can you test to see that if you now do make and sudo make install it indeed installs cadabra2_defaults.py to that path? I suspect you had some leftovers in the cmake config from when you still had Anaconda's python first.

And as to why LaTeX rendering is faster on Linux: Linux is much faster at starting processes and reading loads of small files than MacOS. Do like I did and install Linux on that Mac.

[kpeeters]

Hold on, didn't read that correctly. It did not pick up the right Python site path. Ok, will fix that.

[dchorazkiewicz]

Ok i've removed build folder and again cmake ....... and now
log.txt

[dchorazkiewicz]

For now it works, but idea with virtualisation is great!

Cadabra + sympy this is what i need :)
Thank you very much for help!

[kpeeters]

If you have any suggestions on how to improve the interaction between cadabra and sympy, don't hesitate to get in touch.

[kpeeters]

That last log you sent shows that everything does work as expected: if you have the HomeBrew python3 first in your path, cmake will pick it up, and install cadabra2_defaults.py in the HomeBrew python package directory. I'm closing this now, but please re-open if necessary.