i ' m going to put this here for anyone who stumbles upon it . I checked out my problem with gupnptools . checking the file that aria 2 downloaded that failed its makepkg checksum showed it was a little xml txt . A meta 4 file that aria will automatically grab for you if its hosted . Because of the mix of the o aria flag and the way makepkg seems to mv the downloaded file the . part filereally the meta 4 clobbers the misnamed package in this case gupnptools 0 . 8 . 13 . tar . xz . A easy workaround is to add the followmetalinkmem flag to your aria 2 options . You could also set it to off but you ' d lose out on some aria features . pixeluvo did not have this problem , so still could be yaourt bug . and i wonder if lots of people dont run into this .