Install mamba 2.0 (#2147)

Author: mathbunnyru

CHANGELOG.md

@@ -3,6 +3,13 @@
 This changelog only contains breaking and/or significant changes manually introduced to this repository (using Pull Requests).
 All image manifests can be found in [the wiki](https://github.com/jupyter/docker-stacks/wiki).
 
+## 2024-12-03
+
+Affected: all images.
+
+- **Breaking:** Switch to `mamba` v2 ([#2147](https://github.com/jupyter/docker-stacks/pull/2147)).
+  More information about changes made: <https://mamba.readthedocs.io/en/latest/developer_zone/changes-2.0.html>.
+
 ## 2024-11-08
 
 Affected: all images except `docker-stacks-foundation`.

images/docker-stacks-foundation/Dockerfile

@@ -124,9 +124,8 @@ RUN set -x && \
         --prefix="${CONDA_DIR}" \
         --yes \
         'jupyter_core' \
-        # excluding mamba 2.X due to several breaking changes
-        # https://github.com/jupyter/docker-stacks/pull/2147
-        'mamba<2.0.0' \
+        'conda' \
+        'mamba' \
         "${PYTHON_SPECIFIER}" && \
     rm -rf /tmp/bin/ && \
     # Pin major.minor version of python

tests/docker-stacks-foundation/test_packages.py

@@ -70,14 +70,14 @@
 EXCLUDED_PACKAGES = [
     "bzip2",
     "ca-certificates",
-    "conda-forge::blas[build=openblas]",
+    "conda-forge::blas=*",
     "grpcio-status",
     "grpcio",
     "hdf5",
     "jupyterhub-singleuser",
     "jupyterlab-git",
-    "mamba[version='<2.0.0']",
-    "notebook[version='>",
+    "mamba",
+    "notebook>",
     "openssl",
     "protobuf",
     "python",