pyrox.dev
1import ./make-test-python.nix ({pkgs, lib, ...}:
2let
3 # A filesystem image with a (presumably) bootable debian
4 debianImage = pkgs.vmTools.diskImageFuns.debian11i386 {
5 # os-prober cannot detect systems installed on disks without a partition table
6 # so we create the disk ourselves
7 createRootFS = with pkgs; ''
8 ${parted}/bin/parted --script /dev/vda mklabel msdos
9 ${parted}/sbin/parted --script /dev/vda -- mkpart primary ext2 1M -1s
10 mkdir /mnt
11 ${e2fsprogs}/bin/mkfs.ext4 /dev/vda1
12 ${util-linux}/bin/mount -t ext4 /dev/vda1 /mnt
13
14 if test -e /mnt/.debug; then
15 exec ${bash}/bin/sh
16 fi
17 touch /mnt/.debug
18
19 mkdir /mnt/proc /mnt/dev /mnt/sys
20 '';
21 extraPackages = [
22 # /etc/os-release
23 "base-files"
24 # make the disk bootable-looking
25 "grub2" "linux-image-686"
26 ];
27 # install grub
28 postInstall = ''
29 ln -sf /proc/self/mounts > /etc/mtab
30 PATH=/usr/bin:/bin:/usr/sbin:/sbin $chroot /mnt \
31 grub-install /dev/vda --force
32 PATH=/usr/bin:/bin:/usr/sbin:/sbin $chroot /mnt \
33 update-grub
34 '';
35 };
36
37 # a part of the configuration of the test vm
38 simpleConfig = {
39 boot.loader.grub = {
40 enable = true;
41 useOSProber = true;
42 device = "/dev/vda";
43 # vda is a filesystem without partition table
44 forceInstall = true;
45 };
46 nix.settings = {
47 substituters = lib.mkForce [];
48 hashed-mirrors = null;
49 connect-timeout = 1;
50 };
51 # save some memory
52 documentation.enable = false;
53 };
54 # /etc/nixos/configuration.nix for the vm
55 configFile = pkgs.writeText "configuration.nix" ''
56 {config, pkgs, lib, ...}: ({
57 imports =
58 [ ./hardware-configuration.nix
59 <nixpkgs/nixos/modules/testing/test-instrumentation.nix>
60 ];
61 } // lib.importJSON ${
62 pkgs.writeText "simpleConfig.json" (builtins.toJSON simpleConfig)
63 })
64 '';
65in {
66 name = "os-prober";
67
68 nodes.machine = { config, pkgs, ... }: (simpleConfig // {
69 imports = [ ../modules/profiles/installation-device.nix
70 ../modules/profiles/base.nix ];
71 virtualisation.memorySize = 1300;
72 # To add the secondary disk:
73 virtualisation.qemu.options = [ "-drive index=2,file=${debianImage}/disk-image.qcow2,read-only,if=virtio" ];
74
75 # The test cannot access the network, so any packages
76 # nixos-rebuild needs must be included in the VM.
77 system.extraDependencies = with pkgs;
78 [
79 brotli
80 brotli.dev
81 brotli.lib
82 desktop-file-utils
83 docbook5
84 docbook_xsl_ns
85 grub2
86 kmod.dev
87 libarchive
88 libarchive.dev
89 libxml2.bin
90 libxslt.bin
91 nixos-artwork.wallpapers.simple-dark-gray-bottom
92 ntp
93 perlPackages.ListCompare
94 perlPackages.XMLLibXML
95 python3Minimal
96 shared-mime-info
97 stdenv
98 sudo
99 texinfo
100 unionfs-fuse
101 xorg.lndir
102
103 # add curl so that rather than seeing the test attempt to download
104 # curl's tarball, we see what it's trying to download
105 curl
106 ];
107 });
108
109 testScript = ''
110 machine.start()
111 machine.succeed("udevadm settle")
112 machine.wait_for_unit("multi-user.target")
113 print(machine.succeed("lsblk"))
114
115 # check that os-prober works standalone
116 machine.succeed(
117 "${pkgs.os-prober}/bin/os-prober | grep /dev/vdb1"
118 )
119
120 # rebuild and test that debian is available in the grub menu
121 machine.succeed("nixos-generate-config")
122 machine.copy_from_host(
123 "${configFile}",
124 "/etc/nixos/configuration.nix",
125 )
126 machine.succeed("nixos-rebuild boot --show-trace >&2")
127
128 machine.succeed("egrep 'menuentry.*debian' /boot/grub/grub.cfg")
129 '';
130})