I have installed the arch linux. I am using wifi-menu to connect to wireless network. But every time a package is installed using 'pacman -Syu file' it give errors and in next line the repository is installed.I have gone through similar answer on posted like one ->hereerror retrieving file.pkg.tar.xz from arch.nimukaito.net: could not resolve file    file                                          [#############]100%    Here i have concern why is the error coming and if error is shown then how is the file installation getting completed.Can anyone help me understand what is going here as i am trying to learn the basics ?
arch linux: understanding error msg in retrieving file
arch linux;pacman
You are able to access and download the file because the mirror is online, it gives you an error because the mirror has DNS issues. If you try and lookup arch.nimukaito.net in your browser you will get a DNS address could not be found error, but you still can access and download from it, using the saved copy.I suggest you change your mirror arch.nimukaito.net in /etc/pacman.d/mirrorlist to a different one and then pacman -Syyu then try and install a package.