tjh.dev
Clone of https://github.com/NixOS/nixpkgs.git (to stress-test knotserver)
1let mirrors = import ./mirrors.nix; in
2
3{ system }:
4
5{ url ? builtins.head urls
6, urls ? []
7, sha256 ? ""
8, hash ? ""
9, name ? baseNameOf (toString url)
10}:
11
12# assert exactly one hash is set
13assert hash != "" || sha256 != "";
14assert hash != "" -> sha256 == "";
15
16import <nix/fetchurl.nix> {
17 inherit system hash sha256 name;
18
19 url =
20 # Handle mirror:// URIs. Since <nix/fetchurl.nix> currently
21 # supports only one URI, use the first listed mirror.
22 let m = builtins.match "mirror://([a-z]+)/(.*)" url; in
23 if m == null then url
24 else builtins.head (mirrors.${builtins.elemAt m 0}) + (builtins.elemAt m 1);
25}