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 -O '^metadata_csum_seed' /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 bintools
80 brotli
81 brotli.dev
82 brotli.lib
83 desktop-file-utils
84 docbook5
85 docbook_xsl_ns
86 grub2
87 kbd
88 kbd.dev
89 kmod.dev
90 libarchive
91 libarchive.dev
92 libxml2.bin
93 libxslt.bin
94 nixos-artwork.wallpapers.simple-dark-gray-bottom
95 ntp
96 perlPackages.ListCompare
97 perlPackages.XMLLibXML
98 python3Minimal
99 shared-mime-info
100 stdenv
101 sudo
102 texinfo
103 unionfs-fuse
104 xorg.lndir
105
106 # add curl so that rather than seeing the test attempt to download
107 # curl's tarball, we see what it's trying to download
108 curl
109 ];
110 });
111
112 testScript = ''
113 machine.start()
114 machine.succeed("udevadm settle")
115 machine.wait_for_unit("multi-user.target")
116 print(machine.succeed("lsblk"))
117
118 # check that os-prober works standalone
119 machine.succeed(
120 "${pkgs.os-prober}/bin/os-prober | grep /dev/vdb1"
121 )
122
123 # rebuild and test that debian is available in the grub menu
124 machine.succeed("nixos-generate-config")
125 machine.copy_from_host(
126 "${configFile}",
127 "/etc/nixos/configuration.nix",
128 )
129 machine.succeed("nixos-rebuild boot --show-trace >&2")
130
131 machine.succeed("egrep 'menuentry.*debian' /boot/grub/grub.cfg")
132 '';
133})