dorothy, symlink-helper: fix alpine symlink failures

https://github.com/bevry/dorothy/actions/runs/11323459946/job/31486170602#step:4:11

commands/dorothy

@@ -328,6 +328,11 @@ function dorothy_() (
 		uname -r | grep --quiet --ignore-case --fixed-strings --regexp='manjaro'
 	}
 
+	# see [commands/is-alpine] for details
+	function __is_alpine {
+		test -f /etc/os-release && grep --quiet --ignore-case --regexp='ID=alpine' /etc/os-release 2>/dev/null;
+	}
+
 	# see [commands/fs-realpath] for details
 	function __fs_realpath {
 		# options
@@ -638,7 +643,15 @@ function dorothy_() (
 	function relocate_then_symlink_if_necessary {
 		local symlink="$1" destination="$2"
 		relocate_if_necessary "$symlink" "$destination"
-		ln -sfF "$destination" "$symlink"
+		if __is_alpine; then
+			# alpine doesn't support -F, however the removals of relocate_if_necessary should make it unnecessary
+			ln -sf "$destination" "$symlink"
+		else
+			# -F: replace symlink if directory if needed
+			# -f: unlink symlink path if needed
+			# -s: symbolic link
+			ln -sfF "$destination" "$symlink"
+		fi
 		# cleanup accidents
 		symlink="$symlink/$(basename "$destination")"
 		if test -L "$symlink"; then

commands/symlink-helper

@@ -152,13 +152,22 @@ function symlink_helper() (
 			# not a symlink, confirm with the user what to do
 			fs-rm --confirm -- "$option_symlink"
 		fi
+	elif test -L "$option_symlink"; then
+		# is a broken symlink, drop it and recreate
+		rm "$option_symlink"
 	fi
 
 	# create the symlink
 	# -F: replace symlink if directory if needed
 	# -f: unlink symlink path if needed
-	# -s: symbolik link
-	ln -sfF "$option_existing" "$option_symlink"
+	# -s: symbolic link
+	if is-alpine; then
+		# alpine doesn't support -F, however the above removals should make it unnecessary
+		# https://github.com/bevry/dorothy/actions/runs/11323459946/job/31486170602#step:4:11
+		ln -sf "$option_existing" "$option_symlink"
+	else
+		ln -sfF "$option_existing" "$option_symlink"
+	fi
 
 	# log result to stderr
 	echo-style --success="👍 Symlink created at " --code="$option_symlink" --bold=" targetting " --code="$option_existing"