try ubuntu with conda-forge channel only, no defaults

Author: jmrohwer

.github/workflows/build-conda.yml

@@ -12,7 +12,8 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [ubuntu-latest, windows-latest, macos-13, macos-latest]
+#        os: [ubuntu-latest, windows-latest, macos-13, macos-latest]
+        os: [ubuntu-latest]
     name: Build Anaconda packages on ${{ matrix.os }}
 
     steps:
@@ -37,11 +38,12 @@ jobs:
           auto-update-conda: true
           python-version: 3.12
           channels: conda-forge
+          conda-remove-defaults: true
 
       - name: Prepare conda environment
         shell: bash -el {0}
         run: |
-          conda install conda-build conda-verify anaconda-client
+          conda install conda-build anaconda-client
           mkdir build_output
           
       - name: Build packages for ${{ matrix.os }}

packaging/conda/conda_build_config.yaml

@@ -1,12 +1,12 @@
 python:
-  - 3.10
-  - 3.11
-  - 3.12
+#  - 3.10
+#  - 3.11
+#  - 3.12
   - 3.13  # [arm64 or linux64 or win]
 numpy:
-  - 2.0
-  - 2.0
-  - 2.0
+#  - 2.0
+#  - 2.0
+#  - 2.0
   - 2.1  # [arm64 or linux64 or win]
 zip_keys:
   - python