Error when trying to run ROOT in conda virtual environment

Newbie
1

I’m using a Macbook Pro with Sonoma 14.6.1.
I created a conda virtual environment and installed ROOT successfully.
But when I try to start a terminal session by typing in root, following error pops up.

/opt/anaconda3/envs/test_env/etc/cling/std_darwin.modulemap:153:10: error: header ‘mdspan’ not found
header “mdspan”
^
input_line_1:1:10: note: submodule of top-level module ‘std’ implicitly imported here
#include
^
Warning in cling::IncrementalParser::CheckABICompatibility():
Failed to extract C++ standard library version.
Warning in cling::IncrementalParser::CheckABICompatibility():
Possible C++ standard library mismatch, compiled with _LIBCPP_ABI_VERSION ‘1’
Extraction of runtime standard library version was: ‘’
Replaced symbol at_quick_exit cannot be found in JIT!

2

Hi,

Sorry ROOT did not work out of the box for you.
This looks like a problem in your setup. What is your OS? What did you exactly do to setup ROOT?

Best,
D

3

Dear @Chanhyuk_Park ,

I am also on Mac 14 and I can run ROOT from conda normally. Can you show us the steps you went through to install ROOT with your setup?

Cheers
Vincenzo

4

Dear ROOT experts,

I’m having the exact same behavior as the OP.

I have macOS Sonoma 14.2.1 in a M3Pro Mac.
I’m using Mamba instead of Conda for managing environments and packages.

I created a virtual environment by doing:

mamba create --name pyroot2 root=6.32.0=py312hce2618c_0

and when I run root I get the error the OP mentioned. I get the error but I still get the root prompt. I tried using another python version as well but with no use:

mamba create --name pyroot3 root=6.32.0=py310hcfcc87f_0

However, when I rolled back to ROOT v 6.30.04

mamba create --name pyroot4 root=6.30.4=py311h66530a1_0

everything worked fine and I didn’t get any error.

In case you need any more information please let me know and I can provide :slight_smile:

Best,
Fran