summary refs log tree commit diff
path: root/host/rootfs/default.nix
blob: 9d1dea7e86bd7e79c8930690c028ceb07bfc511e (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
# SPDX-License-Identifier: MIT
# SPDX-FileCopyrightText: 2021-2023 Alyssa Ross <hi@alyssa.is>
# SPDX-FileCopyrightText: 2022 Unikie

import ../../lib/eval-config.nix (

{ config, src
, lseek ? import ../../tools/lseek { inherit config; }
, ...
}:

let
  inherit (config) pkgs;
in

pkgs.pkgsStatic.callPackage (

{ lib, stdenvNoCC, nixos, runCommand, writeReferencesToFile, s6-rc, tar2ext4
, busybox, cloud-hypervisor, cryptsetup, execline, e2fsprogs, jq, kmod
, mdevd, s6, s6-linux-init, socat, util-linuxMinimal, virtiofsd, xorg
}:

let
  inherit (lib) concatMapStringsSep;
  inherit (nixosAllHardware.config.hardware) firmware;

  start-vm = import ../start-vm {
    config = config // { pkgs = pkgs.pkgsStatic; };
  };

  pkgsGui = pkgs.pkgsMusl.extend (final: super: {
    systemd = final.libudev-zero;
    systemdMinimal = final.libudev-zero;

    colord = super.colord.overrideAttrs ({ mesonFlags ? [], ... }: {
      mesonFlags = mesonFlags ++ [
        "-Dsystemd=false"
        "-Dudev_rules=false"
      ];
    });

    polkit = super.polkit.override {
      useSystemd = false;
    };

    seatd = super.seatd.override {
      systemdSupport = false;
    };

    weston = super.weston.overrideAttrs ({ mesonFlags ? [], ... }: {
      mesonFlags = mesonFlags ++ [
        "-Dsystemd=false"
      ];
    });
  });

  foot = pkgsGui.foot.override { allowPgo = false; };

  packages = [
    cloud-hypervisor e2fsprogs execline jq kmod mdevd s6 s6-linux-init s6-rc
    socat start-vm virtiofsd

    (cryptsetup.override {
      programs = {
        cryptsetup = false;
        cryptsetup-reencrypt = false;
        integritysetup = false;
      };
    })

    (busybox.override {
      extraConfig = ''
        CONFIG_CHATTR n
        CONFIG_DEPMOD n
        CONFIG_FINDFS n
        CONFIG_INIT n
        CONFIG_INSMOD n
        CONFIG_LSATTR n
        CONFIG_LSMOD n
        CONFIG_MKE2FS n
        CONFIG_MKFS_EXT2 n
        CONFIG_MODINFO n
        CONFIG_MODPROBE n
        CONFIG_RMMOD n
      '';
    })
  ] ++ (with pkgsGui; [ foot westonLite ]);

  nixosAllHardware = nixos ({ modulesPath, ... }: {
    imports = [ (modulesPath + "/profiles/all-hardware.nix") ];
  });

  kernel = pkgs.linux_latest;

  appvm = import ../../img/app {
    inherit config;
    inherit (foot) terminfo;
  };

  # Packages that should be fully linked into /usr,
  # (not just their bin/* files).
  usrPackages = [ appvm pkgsGui.mesa.drivers pkgsGui.dejavu_fonts ];

  packagesSysroot = runCommand "packages-sysroot" {
    nativeBuildInputs = [ xorg.lndir ];
  } ''
    mkdir -p $out/lib $out/usr/bin
    ln -s ${concatMapStringsSep " " (p: "${p}/bin/*") packages} $out/usr/bin

    for pkg in ${lib.escapeShellArgs usrPackages}; do
        lndir -silent "$pkg" "$out/usr"
    done

    ln -s ${kernel}/lib/modules ${firmware}/lib/firmware $out/lib

    # TODO: this is a hack and we should just build the util-linux
    # programs we want.
    # https://lore.kernel.org/util-linux/87zgrl6ufb.fsf@alyssa.is/
    ln -s ${util-linuxMinimal}/bin/{findfs,lsblk} $out/usr/bin
  '';

  packagesTar = runCommand "packages.tar" {} ''
    cd ${packagesSysroot}
    tar -cf $out --sort=name --mtime=@0 --verbatim-files-from \
        -T ${writeReferencesToFile packagesSysroot} .
  '';
in

stdenvNoCC.mkDerivation {
  name = "spectrum-rootfs";

  inherit src;
  sourceRoot = "source/host/rootfs";

  nativeBuildInputs = [ lseek s6-rc tar2ext4 ];

  MODULES_ALIAS = "${kernel}/lib/modules/${kernel.modDirVersion}/modules.alias";
  MODULES_ORDER = "${kernel}/lib/modules/${kernel.modDirVersion}/modules.order";
  PACKAGES_TAR = packagesTar;

  makeFlags = [ "dest=$(out)" ];

  dontInstall = true;

  enableParallelBuilding = true;

  passthru = { inherit firmware kernel nixosAllHardware; };

  meta = with lib; {
    license = licenses.eupl12;
    platforms = platforms.linux;
  };
}
) {})