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README: include sha256 of the expected release tarball

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Advantages of including the SHA256:
(i) removes the impurity of the tarball contents being changed
(ii) if sha256 is not included, then each nixops deploy triggers a re-download of the tarball

Here's how to get the expected hash:

$ nix-prefetch-url --unpack 'https://gitlab.com/simple-nixos-mailserver/nixos-mailserver/-/archive/v2.2.0/nixos-mailserver-v2.2.0.tar.gz'
unpacking...
[0.0 MiB DL]
path is '/nix/store/dwg8xlfnlw7mhr4cjk1viwmm0b249b74-nixos-mailserver-v2.2.0.tar.gz'
0gqzgy50hgb5zmdjiffaqp277a68564vflfpjvk1gv6079zahksc
This commit is contained in:
Tom 2019-01-28 14:21:51 +00:00
parent c2ca4d1bb0
commit 2c59de8dcb
1 changed files with 4 additions and 1 deletions
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README.md
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@ -67,7 +67,10 @@ See the [mailing list archive](https://www.freelists.org/archive/snm/)
{ config, pkgs, ... }:
{
imports = [
(builtins.fetchTarball "https://gitlab.com/simple-nixos-mailserver/nixos-mailserver/-/archive/v2.2.0/nixos-mailserver-v2.2.0.tar.gz")
(builtins.fetchTarball {
url = "https://gitlab.com/simple-nixos-mailserver/nixos-mailserver/-/archive/v2.2.0/nixos-mailserver-v2.2.0.tar.gz";
sha256 = "0gqzgy50hgb5zmdjiffaqp277a68564vflfpjvk1gv6079zahksc";
})
];
mailserver = {