flake: switch to cached nixpkgs channel #1714
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| @@ -36,7 +36,7 @@ | |||
| nixpkgs-update.inputs.mmdoc.follows = "empty"; | |||
| nixpkgs-update.inputs.treefmt-nix.follows = "treefmt-nix"; | |||
| nixpkgs-update.url = "github:nix-community/nixpkgs-update/infra"; | |||
| nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable-small"; | |||
| nixpkgs.url = "https://nixos.org/channels/nixos-unstable-small/nixexprs.tar.xz"; | |||
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Actually shallow clone are faster if you regularly switch between nixpkgs versions:
--- flake.nix
+++ flake.nix
@@ -2,7 +2,7 @@
description = "A universal nixos installer, just needs ssh access to the target system";
inputs = {
- nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable-small";
+ nixpkgs.url = "git+https://github.com/NixOS/nixpkgs?shallow=1&ref=nixos-unstable-small";
flake-parts = { url = "github:hercules-ci/flake-parts"; inputs.nixpkgs-lib.follows = "nixpkgs"; };
# used for testing
That cache should work both locally and in buildbot. For fresh clones it's almost as fast as downloading the github archive (tested in github actions)
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IIRC github has asked projects (homebrew and others) to stop using shallow clones because they are expensive to run on the servers.
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It's only a shallow clone on the first run because than the cache takes over and it's just a handful commit that is fetched (which should be way cheaper than the github archive, especially if the internet isn't great). For this repository no one is using this flake in CIs where we would run into this issue.
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That isn't what I was referring to, just using it in this repo isn't the issue, other people copying the pattern is.
Flake lock file updates:
• Updated input 'nixpkgs':
'github:NixOS/nixpkgs/b89a821293c3872992137114d0db9a791243a41b?narHash=sha256-D2waFyJkaepTchTrGVAIfCd/YP%2B37bgXWg9cXwuxuT0%3D' (2025-02-26)
→ 'https://releases.nixos.org/nixos/unstable-small/nixos-25.05beta760628.624ad1673840/nixexprs.tar.xz?narHash=sha256-rKGoPQ7y4rEU7i03lq7sQDHibJ2z97DhwCcvpfR/5L0%3D' (2025-02-28)
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