Add debug info for macOS CI actions

src/ci/scripts/dump-environment.sh

@@ -1,6 +1,8 @@
 #!/bin/bash
 # This script dumps information about the build environment to stdout.
 
+source "$(cd "$(dirname "$0")" && pwd)/../shared.sh"
+
 set -euo pipefail
 IFS=$'\n\t'
 
@@ -17,3 +19,17 @@ set +o pipefail
 du . | sort -nr | head -n100
 set -o pipefail
 echo
+
+if isMacOS
+then
+ # Debugging information that might be helpful for diagnosing macOS
+ # performance issues.
+ # SIP
+ csrutil status
+ # Gatekeeper
+ spctl --status
+ # Authorization policy
+ DevToolsSecurity -status
+ # Spotlight status
+ mdutil -avs
+fi