Nix Playwright Firefox Fix Script

fix-playwright-firefox.sh

#!/bin/sh

# This requires that you have the firefox-bin package installed.
# Then run `playwright install firefox` and execute this script to fix binaries.
# !Important: Ensure the playwright firefox and nix firefox versions match exactly.

set -euo pipefail

firefox_wrapper=$(which firefox)
firefox_lib=$(dirname "$firefox_wrapper")
firefox_lib=$(dirname "$firefox_lib")/lib
# /lib/firefox-bin-118.0.1/firefox (resolve first folder in lib)
firefox_lib=$(ls -d "$firefox_lib"/firefox-bin-* | head -n 1)
echo "firefox_lib: $firefox_lib"

for folder in ./browsers/firefox-*/firefox; do
        echo "playwright_dir: $folder"

        # Copy wrapper configuration from firefox-bin
        folder_wrapper="$folder/firefox"
        sed '$d' "$firefox_wrapper" > "$folder_wrapper"
        echo "exec -a \"\$0\" \"$folder_wrapper-bin\" \"\$@\"" >> "$folder_wrapper"
        chmod +x "$folder_wrapper"

        find "$folder" -type f -executable | while read -r i_abs; do
                i_rel=$(realpath --relative-to="$folder" "$i_abs")

                # Skip the wrapper
                if [ "$i_rel" = "firefox" ]; then continue; fi

                firefix_lib_i="$firefox_lib/$i_rel"
                echo "* $i_rel: $firefix_lib_i"

                interpreter=$(patchelf --print-interpreter "$firefix_lib_i" 2>/dev/null || true)
                if [ -n "$interpreter" ]; then
                        echo "[OK] interpreterr"
                        patchelf --set-interpreter "$interpreter" "$i_abs"
                fi

                rpath=$(patchelf --print-rpath "$firefix_lib_i")
                echo "[OK] rpath"
                patchelf --set-rpath "$rpath" "$i_abs"
        done
done