pyrox.dev
1import ./make-test-python.nix ({ lib, pkgs, ... }:
2
3{
4 name = "binary-cache";
5 meta.maintainers = with lib.maintainers; [ thomasjm ];
6
7 nodes.machine =
8 { pkgs, ... }: {
9 imports = [ ../modules/installer/cd-dvd/channel.nix ];
10 environment.systemPackages = [ pkgs.python3 ];
11 system.extraDependencies = [ pkgs.hello.inputDerivation ];
12 nix.extraOptions = ''
13 experimental-features = nix-command
14 '';
15 };
16
17 testScript = ''
18 # Build the cache, then remove it from the store
19 cachePath = machine.succeed("nix-build --no-out-link -E 'with import <nixpkgs> {}; mkBinaryCache { rootPaths = [hello]; }'").strip()
20 machine.succeed("cp -r %s/. /tmp/cache" % cachePath)
21 machine.succeed("nix-store --delete " + cachePath)
22
23 # Sanity test of cache structure
24 status, stdout = machine.execute("ls /tmp/cache")
25 cache_files = stdout.split()
26 assert ("nix-cache-info" in cache_files)
27 assert ("nar" in cache_files)
28
29 # Nix store ping should work
30 machine.succeed("nix store ping --store file:///tmp/cache")
31
32 # Cache should contain a .narinfo referring to "hello"
33 grepLogs = machine.succeed("grep -l 'StorePath: /nix/store/[[:alnum:]]*-hello-.*' /tmp/cache/*.narinfo")
34
35 # Get the store path referenced by the .narinfo
36 narInfoFile = grepLogs.strip()
37 narInfoContents = machine.succeed("cat " + narInfoFile)
38 import re
39 match = re.match(r"^StorePath: (/nix/store/[a-z0-9]*-hello-.*)$", narInfoContents, re.MULTILINE)
40 if not match: raise Exception("Couldn't find hello store path in cache")
41 storePath = match[1]
42
43 # Delete the store path
44 machine.succeed("nix-store --delete " + storePath)
45 machine.succeed("[ ! -d %s ] || exit 1" % storePath)
46
47 # Should be able to build hello using the cache
48 logs = machine.succeed("nix-build -A hello '<nixpkgs>' --option require-sigs false --option trusted-substituters file:///tmp/cache --option substituters file:///tmp/cache 2>&1")
49 logLines = logs.split("\n")
50 if not "this path will be fetched" in logLines[0]: raise Exception("Unexpected first log line")
51 def shouldBe(got, desired):
52 if got != desired: raise Exception("Expected '%s' but got '%s'" % (desired, got))
53 shouldBe(logLines[1], " " + storePath)
54 shouldBe(logLines[2], "copying path '%s' from 'file:///tmp/cache'..." % storePath)
55 shouldBe(logLines[3], storePath)
56
57 # Store path should exist in the store now
58 machine.succeed("[ -d %s ] || exit 1" % storePath)
59 '';
60})