When using environment type mamba, asv attempts to reinstall Python

[nickodell]

Description of problem

Hi, I'm attempting to use asv to benchmark a change to SciPy. Specifically, my goal is to run the scipy.optimize benchmarks against this change to measure if computing the numdiff with less memory causes a regression in terms of CPU usage.

In order to do this, I set up mamba in the manner recommended by the developer quickstart guide, then attempted to run

python3 dev.py bench --compare main

Initially, I got this error:

Couldn't load asv.plugins._mamba_helpers because
No module named 'libmambapy'
· Unknown environment type 'mamba'. Allowed values based on existing plugins are ['existing', 'conda', 'virtualenv'].

I asked about this in SciPy's slack channel, and @HaoZeke suggested installing conda-build plus libmambapy. I ran mamba install conda-build && mamba install libmambapy to install this.

This solved the previous error, but now I have this error:

(scipy-dev) nodell@scipy-dev:~/scipy$ python3 dev.py bench --compare main
💻  ninja -C /home/nodell/scipy/build -j6
ninja: Entering directory `/home/nodell/scipy/build'
[2/2] Generating scipy/generate-version with a custom command
fatal: bad revision '^v1.12.0'
Build OK
💻  meson install -C build --only-changed
Installing, see meson-install.log...
Installation OK
SciPy from development installed path at: /home/nodell/scipy/build-install/lib/python3.11/site-packages
********************************************************************************
WARNING: you have uncommitted changes --- these will NOT be benchmarked!
********************************************************************************
pkgs/r/noarch                                                 No change
pkgs/r/linux-64                                               No change
pkgs/main/noarch                                              No change
pkgs/main/linux-64                                            No change
Mamba failed to solve:
 - python=3.11
 - wheel
 - pip
 - numpy
 - Cython
 - pytest
 - pythran
 - pybind11
 - meson-python

with channels:
Could not solve for environment specs
The following package could not be installed
└─ python 3.11**  is not installable because it requires
   └─ libgcc-ng >=11.2.0 , which requires
      └─ __glibc >=2.17 , which is missing on the system.

·· Failure creating environment for mamba-py3.11-Cython-meson-python-numpy-pybind11-pytest-pythran
Traceback (most recent call last):
  File "/home/nodell/.miniforge3/envs/scipy-dev/bin/asv", line 10, in <module>
    sys.exit(main())
             ^^^^^^
  File "/home/nodell/.miniforge3/envs/scipy-dev/lib/python3.11/site-packages/asv/main.py", line 29, in main
    result = args.func(args)
             ^^^^^^^^^^^^^^^
  File "/home/nodell/.miniforge3/envs/scipy-dev/lib/python3.11/site-packages/asv/commands/__init__.py", line 49, in run_from_args
    return cls.run_from_conf_args(conf, args)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/nodell/.miniforge3/envs/scipy-dev/lib/python3.11/site-packages/asv/commands/continuous.py", line 64, in run_from_conf_args
    return cls.run(
           ^^^^^^^^
  File "/home/nodell/.miniforge3/envs/scipy-dev/lib/python3.11/site-packages/asv/commands/continuous.py", line 103, in run
    result = Run.run(
             ^^^^^^^^
  File "/home/nodell/.miniforge3/envs/scipy-dev/lib/python3.11/site-packages/asv/commands/run.py", line 278, in run
    Setup.perform_setup(environments, parallel=parallel)
  File "/home/nodell/.miniforge3/envs/scipy-dev/lib/python3.11/site-packages/asv/commands/setup.py", line 82, in perform_setup
    list(map(_create, environments))
  File "/home/nodell/.miniforge3/envs/scipy-dev/lib/python3.11/site-packages/asv/commands/setup.py", line 14, in _create
    env.create()
  File "/home/nodell/.miniforge3/envs/scipy-dev/lib/python3.11/site-packages/asv/environment.py", line 750, in create
    self._setup()
  File "/home/nodell/.miniforge3/envs/scipy-dev/lib/python3.11/site-packages/asv/plugins/mamba.py", line 154, in _setup
    transaction = solver.solve(mamba_pkgs)
                  ^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/nodell/.miniforge3/envs/scipy-dev/lib/python3.11/site-packages/asv/plugins/_mamba_helpers.py", line 252, in solve
    raise RuntimeError("Solver could not find solution." + error_string)
RuntimeError: Solver could not find solution.Mamba failed to solve:
 - python=3.11
 - wheel
 - pip
 - numpy
 - Cython
 - pytest
 - pythran
 - pybind11
 - meson-python

with channels:
Could not solve for environment specs
The following package could not be installed
└─ python 3.11**  is not installable because it requires
   └─ libgcc-ng >=11.2.0 , which requires
      └─ __glibc >=2.17 , which is missing on the system.

There are two weird things about that error message:

1. I have Python 3.11, so it shouldn't need to reinstall it.
2. I have glibc 2.35, which should be good enough.

asv command line

The SciPy script dev.py runs asv with the following arguments:

asv continuous --show-stderr --factor 1.05 --quick 4ee0de31b758f81be85435a0ad72d315a840441d 30306d1e73a10702e8677a74b6667f14c97458b1

Version information

I am using:

• Ubuntu 22.04.4
• Python 3.11.9
• asv 0.6.3
• mamba 1.5.8

For all other packages, a full mamba package version list is attached: mamba_packages.log