Hey everyone! I'm very new to pants so apologies if this is an obvious fix

Basically I want to add the streamlit library to my

requirements.txt

file so it looks like this:

numpy<2.0.0
rdkit==2023.3.3
datamol==0.11.2
streamlit==1.36.0
pandas==2.2.2

when I try to run

pants test tests/

which contains files that would use this library I get the following error

20:32:54.44 [INFO] Completed: Building 5 requirements for requirements.pex from the 3rdparty/python/default.lock resolve: datamol==0.11.2, numpy<2.0.0, pandas==2.2.2, rdkit==2023.3.3, streamlit==1.36.0
20:32:54.45 [ERROR] 1 Exception encountered:

Engine traceback:
  in `test` goal

ProcessExecutionFailure: Process 'Building 5 requirements for requirements.pex from the 3rdparty/python/default.lock resolve: datamol==0.11.2, numpy<2.0.0, pandas==2.2.2, rdkit==2023.3.3, streamlit==1.36.0' failed with exit code 1.
stdout:

stderr:
Failed to resolve compatible artifacts from lock 3rdparty/python/default.lock for 1 target:
1. /usr/local/python/3.10.13/bin/python3.10:
    Failed to resolve all requirements for cp310-cp310-manylinux_2_31_x86_64 interpreter at /usr/local/python/3.10.13/bin/python3.10 from 3rdparty/python/default.lock:

Configured with:
    build: True
    use_wheel: True

Dependency on streamlit (via: streamlit==1.36.0) not satisfied, no candidates found.

I have been sure to generate lockfiles before running this and interestingly I get the following error for fetching streamlit

ERROR: Could not find a version that satisfies the requirement streamlit==1.36.0 (from versions: 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.8.2, 0.9.0, 0.11.0, 0.12.2, 0.12.3, 0.12.4, 0.13.0, 0.13.1, 0.13.3, 0.13.5, 0.14.2, 0.15.0, 0.15.1, 0.15.2, 0.15.3, 0.15.4, 0.15.5, 0.15.6, 0.16.0, 0.16.1, 0.16.2, 0.16.3, 0.17.0, 0.17.1, 0.17.2, 0.18.0, 0.18.1, 0.19.0, 0.19.1, 0.20.0, 0.21.0, 0.22.0, 0.22.1, 0.22.2, 0.23.0, 0.24.0, 0.24.1, 0.24.2, 0.24.3, 0.25.0, 0.26.0, 0.26.1, 0.27.0, 0.28.0, 0.29.0, 0.30.0, 0.31.0, 0.32.0, 0.33.0, 0.34.0, 0.35.0, 0.36.0, 0.37.0, 0.40.0, 0.40.1, 0.41.0, 0.42.0, 0.43.0, 0.43.1, 0.43.2, 0.44.0, 0.45.0, 0.46.0, 0.47.0, 0.47.1, 0.47.2, 0.47.3, 0.47.4, 0.48.0, 0.48.1, 0.49.0, 0.50.0, 0.50.1, 0.50.2, 0.51.0, 0.52.0, 0.52.1, 0.52.2, 0.53.0, 0.54.0, 0.55.0, 0.56.0, 0.57.0, 0.57.1, 0.57.2, 0.57.3, 0.58.0, 0.59.0, 0.60.0, 0.61.0, 0.62.0, 0.62.1, 0.63.0, 0.63.1, 0.64.0, 0.65.0, 0.65.1, 0.65.2, 0.66.0, 0.67.0, 0.67.1, 0.68.0, 0.68.1, 0.69.0, 0.69.1, 0.69.2, 0.70.0, 0.71.0, 0.72.0, 0.73.0, 0.73.1, 0.74.0, 0.74.1, 0.75.0, 0.76.0, 0.77.0, 0.78.0, 0.79.0, 0.80.0, 0.81.0, 0.81.1, 0.82.0, 0.83.0, 0.84.0, 0.84.1, 0.84.2, 0.85.0, 0.85.1, 0.86.0, 0.87.0, 0.88.0, 0.89.0, 1.0.0, 1.1.0, 1.2.0, 1.3.0, 1.3.1, 1.4.0, 1.5.0, 1.5.1, 1.6.0rc3, 1.6.0rc4, 1.6.0, 1.7.0, 1.8.0rc1, 1.8.0, 1.8.1rc1, 1.8.1, 1.9.0rc1, 1.9.0, 1.9.1rc1, 1.9.1rc2, 1.9.1, 1.9.2rc1, 1.9.2, 1.10.0rc1, 1.10.0rc2, 1.10.0, 1.11.0rc1, 1.11.0, 1.11.1rc1, 1.11.1, 1.12.0rc1, 1.12.0rc2, 1.12.0)
ERROR: No matching distribution found for streamlit==1.36.0

I've confirmed that pip installing streamlit works fine (BTW this error happens regardless of if I add a version specification in the requirements file) and can be imported etc

so what gives?

also in case it's relevant I ran

pants export --resolve=python-default

prior to generating lock files. I also tried

pants clean-all

and

pants resolve

but neither of these goals were recognized (I'm on pants version 2).

although I will say this has now been resolved thanks to my fearless leader @thousands-hair-85964 who figured out we weren't explicitly calling the

python-default

virtual environment we created in the pants.toml. After that we also removed versions for the problem packages in requirements.txt and then running the tests from root fixed the error (after exporting the virtual environment and running lockfiles)