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Update for micromamba 2.9.0 #157

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Merged
mattwthompson merged 1 commit into from
Aug 8, 2026
+13 −1
Merged

Update for micromamba 2.9.0 #157

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8 changes: 7 additions & 1 deletion .github/workflows/ci.yaml
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Original file line number Diff line number Diff line change
Expand Up @@ -18,7 +18,7 @@ defaults:

jobs:
test:
name: ${{ matrix.os }}, 🐍=${{ matrix.python-version }}, 🟠=${{ matrix.ambertools }}, 👁️=${{ matrix.openeye }}, 🐉=${{ matrix.mamba-executable }}
name: ${{ matrix.os }}, 🐍=${{ matrix.python-version }}, 🟠=${{ matrix.ambertools }}, 👁️=${{ matrix.openeye }}, 🐉=${{ matrix.mamba-executable }}@${{ matrix.micromamba-version }}
runs-on: ${{ matrix.os }}
strategy:
matrix:
Expand All @@ -27,6 +27,11 @@ jobs:
ambertools: [false, true]
openeye: [false, true]
mamba-executable: ["micromamba"] # TODO: Add "mamba" back
# TEMPORARY, for #156: pin both the pre- and post-4202 micromamba
# releases to confirm the packages-key fix covers both `list --json`
# formats. Revert this axis (and the micromamba-version input below)
# before merging.
micromamba-version: ["2.8.1-0", "2.9.0-0"]
exclude:
- python-version: "3.14"
ambertools: true
Expand All @@ -47,6 +52,7 @@ jobs:
uses: mamba-org/setup-micromamba@v3
with:
environment-file: devtools/conda-envs/test_env.yaml
micromamba-version: ${{ matrix.micromamba-version }}
create-args: >-
python=${{ matrix.python-version }}

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6 changes: 6 additions & 0 deletions openff/utilities/provenance.py
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Expand Up @@ -30,6 +30,12 @@ def _get_conda_list_package_versions() -> dict[str, str]:

output = json.loads(subprocess.check_output(conda_command.split()).decode())

# micromamba >= 2.9.0 nests the package list under a "packages" key instead
# of returning it as the top-level array (mamba-org/mamba#4202, issue #156).
# conda, mamba, pixi, and micromamba < 2.9.0 all return the bare array.
if isinstance(output, dict):
output = output.get("packages", [])

package_versions = {}
for _package in output:
package_versions[_package["name"]] = _package["version"]
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