archive: Fix redirection for pkgnames with hyphens for .all subdir

Similar change to cb7ac5c3

 except that
the pattern is adapted to extract the first char of the pkgname too.
Signed-off-by: Florian Pritz <bluewind@xinu.at>

roles/archive/templates/nginx.d.conf.j2

@@ -29,7 +29,9 @@ server {
     root         {{ archive_dir }};
 
     location /.all/ {
-        rewrite ^/.all/((([^/])[^/]*?)-[^-/]+-[0-9]+-[^-]+[^/]*\.pkg\.tar\.xz(\.sig)?)$ /packages/$3/$2/$1;
+        location ~ ^/.all/(<?filename>(?<pkgname>(?<pkgname_first_char>[^/])[^/]+)-(?<pkgver>[^-/]+)-(?<pkgrel>[0-9]+)-(?<arch>[^-/]+)\.pkg\.tar\.xz(?<sig>\.sig)?)$ {
+            rewrite ^ /packages/$pkgname_first_char/$pkgname/$filename;
+        }
     }
 
     location ~ /repos/201[3456]/.*/.*\.pkg\.tar\.xz(\.sig)? {