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https://github.com/privatevoid-net/nix-super.git
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204291f059
Also provide a Nixpkgs overlay, memoize Nixpkgs evaluation and fit the githubFlakes test.
109 lines
3.5 KiB
Nix
109 lines
3.5 KiB
Nix
# Test Nix's remote build feature.
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{ nixpkgs, system, overlay }:
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with import (nixpkgs + "/nixos/lib/testing.nix") {
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inherit system;
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extraConfigurations = [ { nixpkgs.overlays = [ overlay ]; } ];
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};
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makeTest (
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let
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# The configuration of the remote builders.
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builder =
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{ config, pkgs, ... }:
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{ services.openssh.enable = true;
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virtualisation.writableStore = true;
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nix.useSandbox = true;
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};
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# Trivial Nix expression to build remotely.
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expr = config: nr: pkgs.writeText "expr.nix"
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''
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let utils = builtins.storePath ${config.system.build.extraUtils}; in
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derivation {
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name = "hello-${toString nr}";
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system = "i686-linux";
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PATH = "''${utils}/bin";
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builder = "''${utils}/bin/sh";
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args = [ "-c" "if [ ${toString nr} = 5 ]; then echo FAIL; exit 1; fi; echo Hello; mkdir $out $foo; cat /proc/sys/kernel/hostname > $out/host; ln -s $out $foo/bar; sleep 10" ];
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outputs = [ "out" "foo" ];
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}
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'';
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in
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{
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nodes =
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{ builder1 = builder;
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builder2 = builder;
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client =
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{ config, pkgs, ... }:
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{ nix.maxJobs = 0; # force remote building
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nix.distributedBuilds = true;
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nix.buildMachines =
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[ { hostName = "builder1";
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sshUser = "root";
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sshKey = "/root/.ssh/id_ed25519";
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system = "i686-linux";
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maxJobs = 1;
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}
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{ hostName = "builder2";
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sshUser = "root";
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sshKey = "/root/.ssh/id_ed25519";
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system = "i686-linux";
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maxJobs = 1;
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}
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];
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virtualisation.writableStore = true;
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virtualisation.pathsInNixDB = [ config.system.build.extraUtils ];
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nix.binaryCaches = [ ];
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programs.ssh.extraConfig = "ConnectTimeout 30";
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};
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};
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testScript = { nodes }:
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''
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startAll;
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# Create an SSH key on the client.
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my $key = `${pkgs.openssh}/bin/ssh-keygen -t ed25519 -f key -N ""`;
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$client->succeed("mkdir -p -m 700 /root/.ssh");
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$client->copyFileFromHost("key", "/root/.ssh/id_ed25519");
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$client->succeed("chmod 600 /root/.ssh/id_ed25519");
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# Install the SSH key on the builders.
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$client->waitForUnit("network.target");
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foreach my $builder ($builder1, $builder2) {
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$builder->succeed("mkdir -p -m 700 /root/.ssh");
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$builder->copyFileFromHost("key.pub", "/root/.ssh/authorized_keys");
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$builder->waitForUnit("sshd");
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$client->succeed("ssh -o StrictHostKeyChecking=no " . $builder->name() . " 'echo hello world'");
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}
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# Perform a build and check that it was performed on the builder.
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my $out = $client->succeed(
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"nix-build ${expr nodes.client.config 1} 2> build-output",
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"grep -q Hello build-output"
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);
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$builder1->succeed("test -e $out");
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# And a parallel build.
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my ($out1, $out2) = split /\s/,
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$client->succeed('nix-store -r $(nix-instantiate ${expr nodes.client.config 2})\!out $(nix-instantiate ${expr nodes.client.config 3})\!out');
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$builder1->succeed("test -e $out1 -o -e $out2");
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$builder2->succeed("test -e $out1 -o -e $out2");
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# And a failing build.
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$client->fail("nix-build ${expr nodes.client.config 5}");
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# Test whether the build hook automatically skips unavailable builders.
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$builder1->block;
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$client->succeed("nix-build ${expr nodes.client.config 4}");
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'';
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})
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