Ensure we don't revert to adding conda default channel, add setuptool…

…s as bootstrap requirement (apparently not included by default on py3.13)

.github/workflows/build-and-release.yaml

@@ -66,6 +66,8 @@ jobs:
           python-version: ${{ matrix.python }}
           architecture: ${{ matrix.arch }}
           miniforge-version: "latest"
+          channels: conda-forge
+          conda-remove-defaults: "true"
 
       - name: Conda package (Unix)
         if: runner.os != 'Windows'

setuptools_conda/__main__.py

@@ -367,7 +367,7 @@ def remove_projects(requirements, projects):
 
     # Bootstrap up our own requirements just to run the functions for getting
     # requirements:
-    need = ["toml", "distlib"]
+    need = ["setuptools", "toml", "distlib"]
     for name in need[:]:
         try:
             __import__(name)