mirror of
https://github.com/NixOS/nix.git
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1ff186fc6e
This is useful for testing/debugging and maybe for sharing eval caches (since it tells you what file in ~/.cache/nix/eval-cache-v5 to copy).
93 lines
3.3 KiB
Nix
93 lines
3.3 KiB
Nix
{ lib, config, nixpkgs, ... }:
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let
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pkgs = config.nodes.machine.nixpkgs.pkgs;
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root = pkgs.runCommand "nixpkgs-flake" {}
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''
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mkdir -p $out/{stable,tags}
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set -x
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dir=nixpkgs-${nixpkgs.shortRev}
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cp -prd ${nixpkgs} $dir
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# Set the correct timestamp in the tarball.
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find $dir -print0 | xargs -0 touch -h -t ${builtins.substring 0 12 nixpkgs.lastModifiedDate}.${builtins.substring 12 2 nixpkgs.lastModifiedDate} --
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tar cfz $out/stable/${nixpkgs.rev}.tar.gz $dir --hard-dereference
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# Set the "Link" header on the redirect but not the final response to
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# simulate an S3-like serving environment where the final host cannot set
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# arbitrary headers.
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cat >$out/tags/.htaccess <<EOF
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Redirect "/tags/latest.tar.gz" "/stable/${nixpkgs.rev}.tar.gz"
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Header always set Link "<http://localhost/stable/${nixpkgs.rev}.tar.gz?rev=${nixpkgs.rev}&revCount=1234>; rel=\"immutable\""
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EOF
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'';
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in
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{
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name = "tarball-flakes";
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nodes =
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{
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machine =
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{ config, pkgs, ... }:
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{ networking.firewall.allowedTCPPorts = [ 80 ];
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services.httpd.enable = true;
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services.httpd.adminAddr = "foo@example.org";
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services.httpd.extraConfig = ''
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ErrorLog syslog:local6
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'';
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services.httpd.virtualHosts."localhost" =
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{ servedDirs =
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[ { urlPath = "/";
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dir = root;
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}
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];
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};
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virtualisation.writableStore = true;
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virtualisation.diskSize = 2048;
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virtualisation.additionalPaths = [ pkgs.hello pkgs.fuse ];
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virtualisation.memorySize = 4096;
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nix.settings.substituters = lib.mkForce [ ];
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nix.extraOptions = "experimental-features = nix-command flakes";
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};
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};
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testScript = { nodes }: ''
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# fmt: off
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import json
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start_all()
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machine.wait_for_unit("httpd.service")
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out = machine.succeed("nix flake metadata --json http://localhost/tags/latest.tar.gz")
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print(out)
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info = json.loads(out)
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# Check that we got redirected to the immutable URL.
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assert info["locked"]["url"] == "http://localhost/stable/${nixpkgs.rev}.tar.gz"
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# Check that we got a fingerprint for caching.
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assert info["fingerprint"]
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# Check that we got the rev and revCount attributes.
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assert info["revision"] == "${nixpkgs.rev}"
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assert info["revCount"] == 1234
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# Check that fetching with rev/revCount/narHash succeeds.
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machine.succeed("nix flake metadata --json http://localhost/tags/latest.tar.gz?rev=" + info["revision"])
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machine.succeed("nix flake metadata --json http://localhost/tags/latest.tar.gz?revCount=" + str(info["revCount"]))
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machine.succeed("nix flake metadata --json http://localhost/tags/latest.tar.gz?narHash=" + info["locked"]["narHash"])
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# Check that fetching fails if we provide incorrect attributes.
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machine.fail("nix flake metadata --json http://localhost/tags/latest.tar.gz?rev=493300eb13ae6fb387fbd47bf54a85915acc31c0")
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machine.fail("nix flake metadata --json http://localhost/tags/latest.tar.gz?revCount=789")
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machine.fail("nix flake metadata --json http://localhost/tags/latest.tar.gz?narHash=sha256-tbudgBSg+bHWHiHnlteNzN8TUvI80ygS9IULh4rklEw=")
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'';
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}
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