phppgadmin as nginx alias inside a server tag

gistfile1.txt

   ## phppgadmin config for nginx (headache)
        location ~ ^/phppg {
                root /path/path/www/;
                location ~ ^/phppg/(.+\.php$) {
                        root /path/path/www/;
                        fastcgi_intercept_errors on;
                        fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
                        fastcgi_index index.php;
                        include fastcgi_params;
                        fastcgi_pass php;
                }
                location ~* ^/phppg/(.+\.(jpg|jpeg|gif|css|png|js|ico|html|xml|txt))$ {
                   root /path/path/www/;
                }
        }