datalab pycurl

Question

Hi folks,

I tried to install astro-datalab on my MacBook Pro M1 (osx-arm64) running Sonoma 14.5. I followed the instructions to use a fresh install from the GitHub repository. It all seemed to go fine, but when I ran "datalab --version", I got the error:

ImportError: pycurl: libcurl link-time ssl backends (openssl) do not include compile-time ssl backend (secure-transport)

I messed around for an hour trying to uninstall and reinstall libcurl, openssl, etc, but never got datalab to work. I am using conda as my package manager, augmented by pip as needed. 

Thanks in advance...

Dave

Answer 1

Hi Dave,

two colleagues (Stephanie and Igor) have just yesterday solved the same problem on an M1, give it a try (instructions from Stephanie):

"This worked in a conda environment with Python 3.10 (thanks to Igor's advice for the pycurl part):

# Install DL
% pip install --ignore-installed --no-cache-dir astro-datalab

# Add to fix the version of libcurl attached to pycurl, using this:
% conda install -c conda-forge pycurl

on a mac M1 chip. Interestingly, using pip for pycurl did NOT work. Not sure it'll work for Dave but may be worth a try!"
 

Best,

Robert

Comments

In addition to what Stephanie and Robert said, if the problem still persists, I suggest upgrading your OS, if you are not current, and your Xcode, after that if you are using `brew` do a `brew update` followed by a `brew upgrade`.  If it still doesn't work, please do let us know. Before releasing this package we made sure it worked in a MAC ARM architecture but the ARM is still seeing a lot of changes, software wise, so it'll be a great help for us to know about what problems, ARM users, are experiencing. Thank you!
Igor

---

Hi Robert, Igor, and Stephanie...

Thanks for your help and patience, I was in South Africa for the last 3 weeks.

TL; DR - I am operational with 2.22.1 but there seems to be a configuration specification problem (?) with 2.23.1 in GitHub.

I have three MacOS machines (don't ask) - Intel, M1, and M2. Today, I took the following steps for all three machines:

(1) removed /opt/anaconda
(2) upgraded to latest macOS (Sonoma 14.6.1)
(3) downloaded and install latest Anaconda (2024.06, Python 3.12)
(4) ran "conda update conda"
(5) ran "conda update --all"
---> At this point, I am running Python 3.12.4, and conda 24.7.1

(6) installed astro-datalab using: "pip install --ignore-installed --no-cache-dir astro-datalab"
---> This installed version 2.22.1, which is NOT the latest version on GitHub

Datalab 2.22.1 worked as expected for the commands I tried (login, ls, put, get, logout). Note I did not have to do anything with brew, curl, or pycurl.

I then tried to install version 2.23.1 from GitHub following the revised README file. This seemed to be going fine until I tried to install (Step 4). That produced the error message:

Processing ./dist/astro_datalab-2.23.1-py3-none-any.whl
Requirement already satisfied: certifi in /opt/anaconda3/lib/python3.12/site-packages (from astro-datalab==2.23.1) (2024.7.4)
INFO: pip is looking at multiple versions of astro-datalab to determine which version is compatible with other requirements. This could take a while.
ERROR: Package 'astro-datalab' requires a different Python: 3.12.4 not in '<3.12,>=3.9'

CONCLUSIONS
(1) I am now running astro-datalab 2.22.1 under Sonoma 14.6.1 on Intel and Apple Silicon.
(2) I have not successfully installed astro-datalab 2.23.1 from GitHub
(3) I am operational for now, although I suspect I am not benefiting from the new pycurl

I'm happy to work with you further as needed.

Thanks again,

David



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