aseprite_macos_update_install.sh

#!/usr/bin/env bash

set -e

target_osx=$(sw_vers -productVersion)
project_dir=/Users/rkmax/development/aseprite
skia_dir=/Users/rkmax/development/skia
arch="$(uname -m)"

bundle_trial_url=https://www.aseprite.org/downloads/trial/Aseprite-v1.2.40-trial-macOS.dmg

install_update_deps() {
  macos_deps
  dep_skia
  dep_aseprite
}

macos_deps() {
  brew update
  brew install cmake ninja
}

dep_skia() {
  rm -rf $skia_dir
  mkdir -p $skia_dir
  cd $skia_dir

  latest_url=$(curl -s https://api.github.com/repos/aseprite/skia/releases/latest | grep "browser_download_url.*-macOS.*${arch}.zip" | cut -d : -f 2,3 | tr -d \")
  name=$(basename "${latest_url}")

  if [ ! -f "${name}" ]; then
    echo "Downloading ${name}"

    # the value already include '"'
    # shellcheck disable=SC1073
    wget ${latest_url}
  fi

  unzip "${name}"
}

dep_aseprite() {
  if [ ! -d $project_dir ]; then
    git clone --recursive https://github.com/aseprite/aseprite.git $project_dir
  fi

  cd $project_dir
  git pull
}

build_bin() {
  cd $project_dir
  mkdir -p build
  cd build

  cmake \
    -DCMAKE_BUILD_TYPE=RelWithDebInfo \
    -DCMAKE_OSX_ARCHITECTURES="${arch}" \
    -DCMAKE_OSX_DEPLOYMENT_TARGET="${target_osx}" \
    -DCMAKE_MACOSX_RPATH=ON \
    -DCMAKE_OSX_SYSROOT=/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk \
    -DLAF_BACKEND=skia \
    -DSKIA_DIR="${skia_dir}" \
    -DSKIA_LIBRARY_DIR="${skia_dir}/out/Release-${arch}" \
    -DSKIA_LIBRARY="${skia_dir}/out/Release-${arch}/libskia.a" \
    -DPNG_ARM_NEON:STRING=on \
    -G Ninja ..

  ninja aseprite
}

package_app() {
  mkdir -p "${project_dir}/bundle"
  cd "${project_dir}/bundle"


  name=$(basename "${bundle_trial_url}")
  if [ ! -f "${name}" ]; then
    echo "Downloading bundle assets"
    wget "${bundle_trial_url}"
  fi

  mkdir -p mount
  yes qy | hdiutil attach -quiet -nobrowse -noverify -noautoopen -mountpoint mount "${name}"
  cp -r mount/Aseprite.app .
  hdiutil detach -quiet mount

  rm -rf Aseprite.app/Contents/MacOS/aseprite
  rm -rf Aseprite.app/Contents/Resources/data
  cp -r "${project_dir}/build/bin/aseprite" Aseprite.app/Contents/MacOS/aseprite
  cp -r "${project_dir}/build/bin/data" Aseprite.app/Contents/Resources/data
}

install_app() {
  sudo cp -r "${project_dir}/bundle/Aseprite.app" /Applications/
}

install_update_deps
build_bin
package_app
install_app

Thanks. A little history. I do make this Gist very similar to yours (arch agnostic, for arm64 and x64) and tried to contact David Campelo to ask for authorization to make an "installation" app (electron os something) for the master branch or release (could be chosen) that end up generating the App. And I got a couple of treats if I accomplish this. So my actual gist to compile Aseprite on my M1 is "secret" and not visible.

Another hint. They use GitHub-actions to create their release.zip, if you study a little bit what they do using build containers and GitHub-actions you could do your own fork repository (private) that generate in the GitHub servers (much faster) the final Aseprite.app ;-)

Mine compilation actually is done this way. When I merge the official repo into my forked one, they automatically trigger the compilation process and I got a final .app App.

DISCLAIMER: I'm not a pixel designer, neither a professional game developer, I just a student of those topics and a professor with a couple students (with no money) to buy the product. But if you make money with Aseprite in any way I strongly suggest to buy the license from the OFICIAL website.

i think you dont need to do an electron installer, for macos if I understand correctly (I'm newbie with mac) you can create a folder with a custom background that basically has the Aseprite.app an a link to he applications folder so user can drag n drop (maybe you are think in other stuff)

I bought aseprite sadly I did it via steam (i use it from time to time in linux) and now on the mac I couldn't use it. that's why I make this scripts more intended for my personal use. but I decide to share it as others

mkdir: /Users/rkmax: Permission denied