https://go.skype.com/classic.skype

aur/skypeforlinux-stable-bin
    https://aur.archlinux.org/packages/skypeforlinux-stable-bin/
    https://aur.archlinux.org/cgit/aur.git/tree/PKGBUILD?h=skypeforlinux-stable-bin
aur/skypeforlinux-preview-bin 
    https://aur.archlinux.org/packages/skypeforlinux-preview-bin/
    https://aur.archlinux.org/cgit/aur.git/tree/PKGBUILD?h=skypeforlinux-preview-bin