revert Python shebangs change for conda

[branfosj]

Revert the shebang change in #3717 as it breaks installs.

[jfgrimm]

@branfosj any more detail on exactly how it breaks installs?

[chanbakjsd]

Hi, I have encountered the same issue and would like to expand a bit more.

One feature of Conda is being able to specify the version of Python by creating a new environment:

conda create -n example python=3.10

After activating such an environment, the Python executable is overridden as expected. However, bin/conda expects to be able to import conda.cli which is installed in lib/python3.12/site-packages.

This causes a module not found error and breaking Conda the moment such an environment is activated.

This issue can be replicated using both Miniconda3 and Miniforge3. Setting the value of fix_python_shebang_for = [] allows this use case to work.

To reproduce:

module load Miniforge3
conda create -n py39 python=3.9
source activate py39
conda # Triggers error without unsetting the shebang option.

[branfosj]

Yes ^ was the issue we were seeing.

Specifically we saw it with

module load Miniforge3/24.11.3-0
eval "$(${EBROOTMINIFORGE3}/bin/conda shell.bash hook)"
source "${EBROOTMINIFORGE3}/etc/profile.d/mamba.sh"
conda create --yes --prefix /tmp/condaenv python=3.9
conda activate /tmp/condaenv

Then

$ conda --help
Traceback (most recent call last):
  File "/home/simon/work/eb/installpath/software/Miniforge3/24.11.3-0/bin/conda", line 12, in <module>
    from conda.cli import main
ModuleNotFoundError: No module named 'conda'