Support Pypy as interpreter

### Solution to issue cannot be found in the documentation.

- [X] I checked the documentation.

### Issue

I've installed Pypy as my python interpreter, and all the dependencies for xtensor-python (that are listed when I go to install it) have been installed okay when using pypy3 as the chosen interpreter in the environment.

I don't see any hard dependencies in the repo, but when I go to install xtensor-python, mamba is trying to uninstall my Pypy and replace it with CPython.

Is/should Pypy be supported as the interpreter here? Is there perhaps something wrong with my setup, or is this as expected?

Thanks

### Installed packages

```shell
(XTensorPythonTests-Pypy)
List of packages in environment: "/MicromambaRoot/envs/XTensorPythonTests-Pypy"

Name Version Build Channel
─────────────────────────────────────────────────────────────────
_libgcc_mutex 0.1 conda_forge conda-forge
_openmp_mutex 4.5 2_gnu conda-forge
bzip2 1.0.8 h7f98852_4 conda-forge
ca-certificates 2022.12.7 ha878542_0 conda-forge
expat 2.5.0 h27087fc_0 conda-forge
gdbm 1.18 h0a1914f_2 conda-forge
ld_impl_linux-64 2.39 hcc3a1bd_1 conda-forge
libblas 3.9.0 16_linux64_openblas conda-forge
libcblas 3.9.0 16_linux64_openblas conda-forge
libffi 3.4.2 h7f98852_5 conda-forge
libgcc-ng 12.2.0 h65d4601_19 conda-forge
libgfortran-ng 12.2.0 h69a702a_19 conda-forge
libgfortran5 12.2.0 h337968e_19 conda-forge
libgomp 12.2.0 h65d4601_19 conda-forge
liblapack 3.9.0 16_linux64_openblas conda-forge
libnsl 2.0.0 h7f98852_0 conda-forge
libopenblas 0.3.21 pthreads_h78a6416_3 conda-forge
libsqlite 3.40.0 h753d276_0 conda-forge
libstdcxx-ng 12.2.0 h46fd767_19 conda-forge
libuuid 2.32.1 h7f98852_1000 conda-forge
libzlib 1.2.13 h166bdaf_4 conda-forge
ncurses 6.3 h27087fc_1 conda-forge
numpy 1.24.1 py39hb10b683_0 conda-forge
openssl 3.0.7 h0b41bf4_1 conda-forge
pip 22.3.1 pyhd8ed1ab_0 conda-forge
pybind11 2.10.3 py39haa83c70_0 conda-forge
pybind11-global 2.10.3 py39haa83c70_0 conda-forge
pypy 7.3.9 0_pypy39 conda-forge
pypy3.9 7.3.9 hd671c94_7 conda-forge
python 3.9.12 0_73_pypy conda-forge
python_abi 3.9 3_pypy39_pp73 conda-forge
readline 8.1.2 h0f457ee_0 conda-forge
setuptools 66.1.1 pyhd8ed1ab_0 conda-forge
sqlite 3.40.0 h4ff8645_0 conda-forge
tk 8.6.12 h27826a3_0 conda-forge
tzdata 2022g h191b570_0 conda-forge
wheel 0.38.4 pyhd8ed1ab_0 conda-forge
xtensor 0.24.3 h924138e_1 conda-forge
xtl 0.7.5 hf52228f_0 conda-forge
xz 5.2.6 h166bdaf_0 conda-forge
zlib 1.2.13 h166bdaf_4 conda-forge
```

### Environment info

```shell
environment : XTensorPythonTests-Pypy (active)
env location : //MicromambaRoot/envs/XTensorPythonTests-Pypy
user config files : /home/user/.mambarc
populated config files : /home/user/.condarc
libmamba version : 1.1.0
micromamba version : 1.1.0
curl version : libcurl/7.87.0 OpenSSL/1.1.1s zlib/1.2.13 libssh2/1.10.0 nghttp2/1.47.0
libarchive version : libarchive 3.6.2 zlib/1.2.13 bz2lib/1.0.8 libzstd/1.5.2
virtual packages : __unix=0=0
__linux=5.15.0=0
__glibc=2.31=0
__archspec=1=x86_64
__cuda=11.6=0
channels :
base environment : /MicromambaRoot
platform : linux-64
```

Commencez par reproduire l’installation de xtensor-python dans l’environnement Pypy3/micromamba indiqué et examinez les métadonnées du feedstock ainsi que les contraintes de dépendances utilisées lors de la résolution. Déterminez si Pypy est censé être pris en charge ; le travail est considéré comme terminé si le paquet peut être installé sans remplacer Pypy, ou si la documentation indique clairement qu’il n’est pas pris en charge.

Rédigé par le modèle d'indexation à partir du texte de l'issue.