build: make toolchain inputs reproducible

scripts/codegen.sh

@@ -2,29 +2,11 @@
 set -euo pipefail
 cd "$(dirname "${BASH_SOURCE[0]}")/.."
 
-check=false
 if [[ "${1:-}" == "--check" ]]; then
-  check=true
   shift
+  exec python3 scripts/check_codegen.py "$@"
 fi
 
 python3 scripts/generate_relay_protocol.py
 dart run slang
 dart run build_runner build --delete-conflicting-outputs "$@"
-
-if $check; then
-  generated_changes="$({
-    git diff --name-only -- lib server/relay_protocol_gen.go
-    git ls-files --others --exclude-standard -- \
-      ':(glob)lib/**/*.g.dart' \
-      ':(glob)lib/**/*.freezed.dart' \
-      server/relay_protocol_gen.go
-  } | grep -E '(\.(g|freezed)\.dart|relay_protocol_gen\.go)$' || true)"
-
-  if [[ -n "$generated_changes" ]]; then
-    echo "Generated files are out of date:" >&2
-    printf '  %s\n' "$generated_changes" >&2
-    echo "Run 'scripts/codegen.sh' and commit the result." >&2
-    exit 1
-  fi
-fi