skypeforlinux: prevent constant breakage using web.archive.org

[jamescostian]

Describe the bug

One cannot install skypeforlinux on nixos at this time

To Reproduce

1. Install skypeforlinux

Expected behavior

It should install properly - at the very least, it should not download from a dead (404) URL

Additional context

Similar to #31047

But, I have a suggestion to put an end to this cat-and-mouse game: Instead of downloading directly from skype, download from the web archive, e.g. http://web.archive.org/web/20191118025647/https:/repo.skype.com/deb/pool/main/s/skypeforlinux/skypeforlinux_8.51.0.92_amd64.deb

Metadata

• system: "x86_64-linux"
• host os: Linux 4.19.82, NixOS, 19.09.1258.07e66484e67 (Loris)
• multi-user?: yes
• sandbox: yes
• version: nix-env (Nix) 2.3
• channels(root): "nixos-19.09.1258.07e66484e67"
• nixpkgs: /nix/var/nix/profiles/per-user/root/channels/nixos

Maintainer information:

# a list of nixpkgs attributes affected by the problem
attribute:
# a list of nixos modules affected by the problem
module:

[d-goldin]

This should be addressed by: e6d584f

[jamescostian]

Thanks, but unfortunately, that band-aid will eventually fall off, and then someone will try to install skype and have a bad experience with installing via Nix. This comment on yet another issue in this repo about skype breaking highlights the issue well, and links to several other times stuff like this has happened.

That's why I suggest using a link that won't break, e.g. http://web.archive.org/web/20191118025647/https:/repo.skype.com/deb/pool/main/s/skypeforlinux/skypeforlinux_8.51.0.92_amd64.deb

[d-goldin]

Oh, sorry, I overread the suggestion. I agree, would be nice to fix it and web-archive is not the worstest option. There is already some precedent for that: #70155

Could you please change the title to something that makes this suggestion a bit more immediately obvious?

[jamescostian]

I see it's even been backported to 19.09 - thank you so much!