Actions: Set globals for conda channel settings

All jobs should use the same conda settings. This sets global settings
for conda channels and conda remove defaults settings in one place that
is DRY and easy to configure

Author: simmsa

.github/workflows/main.yml

@@ -10,10 +10,13 @@ on:
       - main
       - develop
 
-# Coveralls coverage reporting toggle.
-# Set to false to ignore coveralls upload failures during outages.
-# Check status: https://status.coveralls.io/
+# Global configuration for all jobs. Can be overridden at the job level if needed.
 env:
+  # Conda channels: Set conda forge as only channel and disable defaults channel
+  CONDA_CHANNELS: conda-forge
+  CONDA_REMOVE_DEFAULTS: true
+  # Coveralls: Set to false to ignore upload failures during outages.
+  #   Check status: https://status.coveralls.io/
   COVERALLS_FAIL_ON_ERROR: false
 
 jobs:
@@ -81,8 +84,8 @@ jobs:
           python-version: ${{ env.PYTHON_VER }}
           activate-environment: TESTconda
           use-only-tar-bz2: false
-          channels: conda-forge
-          conda-remove-defaults: true
+          channels: ${{ env.CONDA_CHANNELS }}
+          conda-remove-defaults: ${{ env.CONDA_REMOVE_DEFAULTS }}
 
       - name: Create MHKiT Conda environment
         shell: bash -l {0}
@@ -134,6 +137,8 @@ jobs:
           activate-environment: TEST
           python-version: ${{ env.PYTHON_VER }}
           use-only-tar-bz2: false
+          channels: ${{ env.CONDA_CHANNELS }}
+          conda-remove-defaults: ${{ env.CONDA_REMOVE_DEFAULTS }}
 
       - name: Create MHKiT Conda environment
         shell: bash -l {0}
@@ -183,6 +188,8 @@ jobs:
           activate-environment: TEST
           python-version: ${{ env.PYTHON_VER }}
           use-only-tar-bz2: false
+          channels: ${{ env.CONDA_CHANNELS }}
+          conda-remove-defaults: ${{ env.CONDA_REMOVE_DEFAULTS }}
 
       - name: Create MHKiT Conda environment
         shell: bash -l {0}
@@ -238,6 +245,8 @@ jobs:
           activate-environment: TEST
           python-version: ${{ matrix.python-version }}
           use-only-tar-bz2: false
+          channels: ${{ env.CONDA_CHANNELS }}
+          conda-remove-defaults: ${{ env.CONDA_REMOVE_DEFAULTS }}
 
       - name: Create MHKiT Conda environment
         shell: bash -l {0}
@@ -303,6 +312,8 @@ jobs:
           activate-environment: TEST
           python-version: ${{ matrix.python-version }}
           use-only-tar-bz2: false
+          channels: ${{ env.CONDA_CHANNELS }}
+          conda-remove-defaults: ${{ env.CONDA_REMOVE_DEFAULTS }}
 
       - name: Create MHKiT Conda environment
         shell: bash -l {0}
@@ -433,6 +444,8 @@ jobs:
           activate-environment: TEST
           python-version: ${{ matrix.python-version }}
           use-only-tar-bz2: false
+          channels: ${{ env.CONDA_CHANNELS }}
+          conda-remove-defaults: ${{ env.CONDA_REMOVE_DEFAULTS }}
 
       - name: Create MHKiT Conda environment
         shell: bash -l {0}
@@ -653,7 +666,8 @@ jobs:
           miniconda-version: 'latest'
           auto-update-conda: true
           python-version: '3.12'
-          channels: conda-forge
+          channels: ${{ env.CONDA_CHANNELS }}
+          conda-remove-defaults: ${{ env.CONDA_REMOVE_DEFAULTS }}
           activate-environment: TESTconda
           use-only-tar-bz2: false