ibdesignable-workaround.sh

#!/bin/bash

# place this shell script to
# ./
# ├── bin/
# │   └── ibdesignable-workaround.sh
# └── YourGreatApp.xcodeproj

set -euo pipefail

if [ "$(uname -m)" != 'arm64' ]; then
    echo '[INFO] This workaround script is M1 Mac Only.'
    exit
fi

SRCROOT=$(cd "$(dirname "$0")/../" || exit 1; pwd)
echo "SRCROOT: ${SRCROOT}"
cd "${SRCROOT}" || exit 1

# get 'YourGreatApp' string from './YourGreatApp.xcodeproj'
PROJECT_NAME=$(find . -maxdepth 1 -name '*.xcodeproj' | cut -d '/' -f2 | cut -d '.' -f1)
PROJECT="${PROJECT_NAME}"
echo "PROJECT: ${PROJECT}"
echo "PROJECT_NAME: ${PROJECT_NAME}"

# find /${PROJECT_NAME}-[a-z]{28}/ named directory from default DerivedData
cd "${HOME}/Library/Developer/Xcode/DerivedData" || exit 1
BUILD_DIR="$(find . -maxdepth 1 -type d -regextype posix-basic -regex "\./${PROJECT_NAME}-[a-z]\{28\}")"
cd "${BUILD_DIR}/Build/Products" || exit 1
BUILD_DIR=$(pwd)
BUILD_ROOT="${BUILD_DIR}"
echo "BUILD_DIR: ${BUILD_DIR}"
echo "BUILD_ROOT: ${BUILD_ROOT}"

# workaround
find . -maxdepth 1 -name '*-iphonesimulator' -print0 | while read -r -d '' file; do
    echo "[info] rm -rf '${file/-iphonesimulator/-iphoneos}'"
    rm -rf "${file/-iphonesimulator/-iphoneos}"
    echo "[INFO] cp -r '${file}' '${file/-iphonesimulator/-iphoneos}'"
    cp -r "${file}" "${file/-iphonesimulator/-iphoneos}"
done

echo '[INFO] Done! restart your Xcode'

yes, it works. very very very very very thanks

Thank you comment. I hadn't noticed this. The default find command on the Mac is the BSD version.
You can use GNU find. by brew install findutils. also you may need to set the PATH.

yes, it works. very very very very very thanks

run this sh,but show blow message,

[INFO] This workaround script is M1 Mac Only.

my macbook is M1 Pro Max

@simonwellchang
Perhaps your terminal is running on Rosseta 2.
This workaround is for Xcode 12. It is no longer needed after Xcode 13.