Attempt to stop depending on homebrew

Refs #1158

Author: mxcl

.github/workflows/cd.yml

@@ -102,6 +102,9 @@ jobs:
           linux+x86-64)
             apt-get update
             apt-get install curl gcc perl-modules openssl make xz-utils --yes;;
+          darwin+aarch64)
+            # https://github.com/pkgxdev/pkgx/issues/1158
+            rm -rf /opt/homebrew;;
           esac
         if: ${{ runner.os == 'Linux' }}