Add configuration for nightly wheels

.github/workflows/ci_workflows.yml

@@ -1,6 +1,10 @@
 name: CI
 
 on:
+  schedule:
+    # run every day at 4am UTC
+    - cron: '0 4 * * *'
+  workflow_dispatch:
   push:
   pull_request:
   workflow_dispatch:
@@ -45,5 +49,16 @@ jobs:
         - cp*-macosx_x86_64
         - cp*-macosx_arm64
         - cp*-win_amd64
+
+      # Developer wheels (use Numpy dev to build)
+      upload_to_anaconda: ${{ (github.event_name == 'schedule' || github.event_name == 'workflow_dispatch') }}
+      anaconda_user: astropy
+      anaconda_package: reproject
+      anaconda_keep_n_latest: 10
+      env: |
+        CIBW_BEFORE_BUILD: '${{ ((github.event_name == 'schedule' || github.event_name == 'workflow_dispatch' || github.event_name == 'pull_request') && 'pip install --pre --extra-index-url https://pypi.anaconda.org/scientific-python-nightly-wheels/simple setuptools setuptools_scm numpy>=0.0dev0 extension-helpers') || '' }}'
+        CIBW_BUILD_FRONTEND: '${{ ((github.event_name == 'schedule' || github.event_name == 'workflow_dispatch' || github.event_name == 'pull_request') && 'pip; args: --no-build-isolation') || 'build' }}'
+
     secrets:
       pypi_token: ${{ secrets.pypi_token }}
+      anaconda_token: ${{ secrets.anaconda_token }}