Try mambaforge (#391)

* try mamba forge in CI.

* Modify windows and macos workflows too.

* explicit call to mamba, test with ubuntu CI

* revert to conda to activate env

* update windows and MacOS CI to use mamba for env setup

Co-authored-by: Mridul Seth <seth.mridul@gmail.com>

Author: rossbar

.github/workflows/conda-macos.yml

@@ -14,9 +14,13 @@ jobs:
         python-version: [3.8, 3.9, "3.10"]
     steps:
 
-      - uses: conda-incubator/setup-miniconda@v2
+      - name: Setup conda with mambaforge
+        uses: conda-incubator/setup-miniconda@v2
         with:
           auto-update-conda: true
+          miniforge-variant: Mambaforge
+          miniforge-version: latest
+          use-mamba: true
           python-version: ${{ matrix.python-version }}
 
       - name: Conda info
@@ -30,8 +34,8 @@ jobs:
       - name: Install and Test
         shell: bash -l {0}
         run: |
-          conda create -n pgv-testenv python=${{ matrix.python-version }}
+          mamba create -n pgv-testenv python=${{ matrix.python-version }}
           conda activate pgv-testenv
-          conda install --channel conda-forge pygraphviz
-          conda install --channel conda-forge pytest
+          mamba install --channel conda-forge pygraphviz
+          mamba install --channel conda-forge pytest
           pytest --pyargs pygraphviz

.github/workflows/conda-ubuntu.yml

@@ -14,9 +14,13 @@ jobs:
         python-version: [3.8, 3.9, "3.10"]
     steps:
 
-      - uses: conda-incubator/setup-miniconda@v2
+      - name: Setup conda with mambaforge
+        uses: conda-incubator/setup-miniconda@v2
         with:
           auto-update-conda: true
+          miniforge-variant: Mambaforge
+          miniforge-version: latest
+          use-mamba: true
           python-version: ${{ matrix.python-version }}
 
       - name: Conda info
@@ -30,8 +34,8 @@ jobs:
       - name: Install and Test
         shell: bash -l {0}
         run: |
-          conda create -n pgv-testenv python=${{ matrix.python-version }}
+          mamba create -n pgv-testenv python=${{ matrix.python-version }}
           conda activate pgv-testenv
-          conda install --channel conda-forge pygraphviz
-          conda install --channel conda-forge pytest
+          mamba install --channel conda-forge pygraphviz
+          mamba install --channel conda-forge pytest
           pytest --pyargs pygraphviz

.github/workflows/conda-windows.yml

@@ -14,9 +14,13 @@ jobs:
         python-version: [3.8, 3.9, "3.10"]
     steps:
 
-      - uses: conda-incubator/setup-miniconda@v2
+      - name: Setup conda with mambaforge
+        uses: conda-incubator/setup-miniconda@v2
         with:
           auto-update-conda: true
+          miniforge-variant: Mambaforge
+          miniforge-version: latest
+          use-mamba: true
           python-version: ${{ matrix.python-version }}
 
       - name: Conda info
@@ -30,8 +34,8 @@ jobs:
       - name: Install and Test
         shell: bash -l {0}
         run: |
-          conda create -n pgv-testenv python=${{ matrix.python-version }}
+          mamba create -n pgv-testenv python=${{ matrix.python-version }}
           conda activate pgv-testenv
-          conda install --channel conda-forge pygraphviz
-          conda install --channel conda-forge pytest
+          mamba install --channel conda-forge pygraphviz
+          mamba install --channel conda-forge pytest
           pytest --pyargs pygraphviz