Meld v3.21.0 (r4) hot-fix for macOS on Intel CPU / Apple Silicon CPU with Rosetta

meld_hotfix_sonoma.sh

### Test on https://github.com/yousseb/meld/releases/tag/osx-20
### OSX - 3.21.0 (r4) Sonoma
### !!! Note: You need put the Meld.app r4 build to the /Applications path first.

#!/bin/zsh

#Fix libpng16.16.dylib not found
install_name_tool -change /usr/local/opt/libpng/lib/libpng16.16.dylib @executable_path/../Frameworks/libpng16.16.dylib /Applications/Meld.app/Contents/Frameworks/libfreetype.6.20.0.dylib

#Fix libbrotlidec.1.dylib not found
install_name_tool -change /usr/local/opt/brotli/lib/libbrotlidec.1.dylib @executable_path/../Frameworks/libbrotlidec.1.dylib /Applications/Meld.app/Contents/Frameworks/libfreetype.6.20.0.dylib

#Make MacOS trust Meld.app
xattr -rd com.apple.quarantine /Applications/Meld.app

#Removes the existing code signature
codesign --remove-signature /Applications/Meld.app

#Re-signs with system’s default certificate
codesign --force --deep --sign - /Applications/Meld.app

#if CPU type is Apple silicon, use Rosetta to execute
/usr/libexec/PlistBuddy -c "Set :LSRequiresNativeExecution false" /Applications/Meld.app/Contents/Info.plist

#Try to open Meld
open /Applications/Meld.app

#Meld CLI Setup
curl https://gist.githubusercontent.com/syneart/4a8724cd479d31f0f742f499f807dcb2/raw/meld_setup_cli.sh | zsh

meld_setup_cli.sh

#!/bin/zsh
RC_FILES=( .bashrc .zshrc )
for RC_FILE in "${RC_FILES[@]}"
do
  [ -f ~/${RC_FILE} ] && {
    ( cat ~/${RC_FILE} | grep "alias meld=" ) && {
        echo "Already put it at ~/${RC_FILE}"
    }|| {
        echo "alias meld='meld_script(){ /Applications/Meld.app/Contents/MacOS/Meld \$* 2>/dev/null & };meld_script'" >> ~/${RC_FILE}
        . ~/${RC_FILE}
        echo "Put it at ~/${RC_FILE} .. ok"
    }
  }
done
echo "[!] You may need to reopen your Terminal."

z_readme

1. Download the official **3.21.0 osx4 (r4 pre-release)** [https://github.com/yousseb/meld/releases/tag/osx-20] version. 
2. Move the Meld.app file to the /Applications directory. 
3. Execute the hot-fix script at CLI with the following command (**only one line**): 
`curl https://gist.githubusercontent.com/syneart/4a8724cd479d31f0f742f499f807dcb2/raw/meld_hotfix_sonoma.sh | zsh`

Upgrade from Sonoma to Sequoia (Intel) break the install, but running this fix it again:

curl https://gist.githubusercontent.com/syneart/4a8724cd479d31f0f742f499f807dcb2/raw/meld_hotfix_sonoma.sh | zsh

Thanks for this. Much appreciated

Repeating my edit to https://gist.github.com/syneart/4a8724cd479d31f0f742f499f807dcb2?permalink_comment_id=5404734#gistcomment-5404734, brew install meld now again works, and installs what used to be called deheselle-meld. This is different from what brew install meld did in 2023 and earlier.

This is also different from what you get if you follow this gist; see my earlier comment for some examples (I find the differences minor, but YMMV). This gist continues to work fine if you prefer it.

That's a great news @ilyagr !!! 🎉
Thanks for sharing it :)