Performed additional Carthage cleanup, and discovered that 'carthage …

…archive' doesn't work with the --use-xcframeworks option on the build command (Carthage issue 3130) [ci skip]

Scripts/archive-carthage.sh

@@ -4,9 +4,9 @@ set -ev
 
 # Archives the Carthage packages, and prints the name of the archive
 
-# Employing a workaround until Xcode 12 builds are fixed
-SCRIPTPATH="$( cd "$(dirname "$0")" >/dev/null 2>&1 ; pwd -P )"
-source "${SCRIPTPATH}"/carthage.sh build --no-skip-current
-source "${SCRIPTPATH}"/carthage.sh archive
+carthage build --use-xcframeworks --no-skip-current
 
-export ARCHIVE_PATH="UnrarKit.framework.zip"
+# This is currently broken, combined with the --use-xcframeworks option above,  as of Carthage 0.38.0 on 2/17/2021
+carthage archive
+
+export ARCHIVE_PATH="UnrarKit.xcframework.zip"

Scripts/carthage-validate.sh

@@ -5,9 +5,6 @@ carthage --version
 REPO="github \"$TRAVIS_REPO_SLUG\""
 COMMIT=$TRAVIS_COMMIT
 
-# Only necessary for workaround below
-SCRIPTPATH="$( cd "$(dirname "$0")" >/dev/null 2>&1 ; pwd -P )"
-
 if [ -z ${TRAVIS+x} ]; then
     REPO="git \"`pwd`\""
     COMMIT=`git log -1 --oneline | cut -f1 -d' '`