Create tar.xz files with built-in tar and remove bzip2 fallback (#2535)

Configurations/make-release-package.sh

@@ -77,31 +77,17 @@ if [ "$ACTION" = "" ] ; then
 
     cd "$CONFIGURATION_BUILD_DIR/staging"
 
-    if [ -x "$(command -v xz)" ]; then
-        XZ_EXISTS=1
-    else
-        XZ_EXISTS=0
-    fi
-
     rm -rf "/tmp/sparkle-extract"
     mkdir -p "/tmp/sparkle-extract"
 
     # Sorted file list groups similar files together, which improves tar compression
-    if [ "$XZ_EXISTS" -eq 1 ] ; then
-        find . \! -type d | rev | sort | rev | tar cv --files-from=- | xz -9 > "../Sparkle-$MARKETING_VERSION.tar.xz"
-
-        # Copy archived distribution for CI
-        cp -f "../Sparkle-$MARKETING_VERSION.tar.xz" "../sparkle-dist.tar.xz"
-
-        # Extract archive for testing binary validity
-        tar -xf "../Sparkle-$MARKETING_VERSION.tar.xz" -C "/tmp/sparkle-extract"
-    else
-        # Fallback to bz2 compression if xz utility is not available
-        find . \! -type d | rev | sort | rev | tar cjvf "../Sparkle-$MARKETING_VERSION.tar.bz2" --files-from=-
+    find . \! -type d | rev | sort | rev | tar --no-xattrs -cJvf "../Sparkle-$MARKETING_VERSION.tar.xz" --files-from=-
+        
+    # Copy archived distribution for CI
+    cp -f "../Sparkle-$MARKETING_VERSION.tar.xz" "../sparkle-dist.tar.xz"
 
-        # Extract archive for testing binary validity
-        tar -xf "../Sparkle-$MARKETING_VERSION.tar.bz2" -C "/tmp/sparkle-extract"
-    fi
+    # Extract archive for testing binary validity
+    tar -xf "../Sparkle-$MARKETING_VERSION.tar.xz" -C "/tmp/sparkle-extract"
 
     # Test code signing validity of the extracted products
     # This guards against our archives being corrupt / created incorrectly
@@ -172,9 +158,5 @@ if [ "$ACTION" = "" ] ; then
         echo "warning: Xcode version $XCODE_VERSION_ACTUAL does not support computing checksums for Swift Packages. Please update the Package manifest manually."
     fi
 
-    if [ "$XZ_EXISTS" -ne 1 ] ; then
-        echo "WARNING: xz compression is used for official releases but bz2 is being used instead because xz tool is not installed on your system."
-    fi
-
     rm -rf "$CONFIGURATION_BUILD_DIR/staging-spm"
 fi

README.markdown

@@ -54,7 +54,7 @@ If you are adding a symbol to the public API you must decorate the declaration w
 
 You do not usually need to build a Sparkle distribution unless you're making changes to Sparkle itself.
 
-To build a Sparkle distribution, `cd` to the root of the Sparkle source tree and run `make release`. Sparkle-*VERSION*.tar.xz (or .bz2) will be created and revealed in Finder after the build has completed.
+To build a Sparkle distribution, `cd` to the root of the Sparkle source tree and run `make release`. Sparkle-*VERSION*.tar.xz will be created and revealed in Finder after the build has completed.
 
 Alternatively, build the Distribution scheme in the Xcode UI.