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base.nix
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{ pkgs, config, lib, ... }:
with lib;
{
options = {
boot.isContainer = mkOption {
type = types.bool;
default = false;
};
hardware.firmware = mkOption {
type = types.listOf types.package;
default = [];
apply = list: pkgs.buildEnv {
name = "firmware";
paths = list;
pathsToLink = [ "/lib/firmware" ];
ignoreCollisions = true;
};
};
not-os.nix = mkOption {
type = types.bool;
description = "enable nix-daemon and a writeable store";
};
nix.enable = mkOption {
type = types.bool;
default = config.not-os.nix;
};
not-os.rngd = mkOption {
type = types.bool;
description = "enable rngd";
default = false;
};
not-os.simpleStaticIp = mkOption {
type = types.bool;
default = false;
description = "set a static ip of 10.0.2.15";
};
networking.timeServers = mkOption {
default = [
"0.nixos.pool.ntp.org"
"1.nixos.pool.ntp.org"
"2.nixos.pool.ntp.org"
"3.nixos.pool.ntp.org"
];
type = types.listOf types.str;
description = ''
The set of NTP servers from which to synchronise.
'';
};
system.systemBuilderArgs = mkOption {
type = types.attrsOf types.unspecified;
internal = true;
default = {};
description = lib.mdDoc ''
`lib.mkDerivation` attributes that will be passed to the top level system builder.
'';
};
system.systemBuilderCommands = mkOption {
type = types.lines;
internal = true;
default = "";
description = ''
This code will be added to the builder creating the system store path.
'';
};
};
config = {
environment.systemPackages = lib.optional config.not-os.nix pkgs.nix;
nixpkgs.config = {
packageOverrides = self: {
utillinux = self.utillinux.override { systemd = null; systemdSupport = false; };
dhcpcd = self.dhcpcd.override { udev = null; };
linux_rpixxx = self.linux_rpi.override {
extraConfig = ''
DEBUG_LL y
EARLY_PRINTK y
DEBUG_BCM2708_UART0 y
ARM_APPENDED_DTB n
ARM_ATAG_DTB_COMPAT n
ARCH_BCM2709 y
BCM2708_GPIO y
BCM2708_NOL2CACHE y
BCM2708_SPIDEV y
'';
};
};
};
environment.etc = {
"nix/nix.conf".source = pkgs.runCommand "nix.conf" {} ''
extraPaths=$(for i in $(cat ${pkgs.writeReferencesToFile pkgs.runtimeShell}); do if test -d $i; then echo $i; fi; done)
cat > $out << EOF
build-use-sandbox = true
build-users-group = nixbld
build-sandbox-paths = /bin/sh=${pkgs.runtimeShell} $(echo $extraPaths)
build-max-jobs = 1
build-cores = 4
EOF
'';
bashrc.text = "export PATH=/run/current-system/sw/bin";
profile.text = "export PATH=/run/current-system/sw/bin";
"resolv.conf".text = "nameserver 10.0.2.3";
passwd.text = ''
root:x:0:0:System administrator:/root:/run/current-system/sw/bin/bash
sshd:x:498:65534:SSH privilege separation user:/var/empty:/run/current-system/sw/bin/nologin
toxvpn:x:1010:65534::/var/lib/toxvpn:/run/current-system/sw/bin/nologin
nixbld1:x:30001:30000:Nix build user 1:/var/empty:/run/current-system/sw/bin/nologin
nixbld2:x:30002:30000:Nix build user 2:/var/empty:/run/current-system/sw/bin/nologin
nixbld3:x:30003:30000:Nix build user 3:/var/empty:/run/current-system/sw/bin/nologin
nixbld4:x:30004:30000:Nix build user 4:/var/empty:/run/current-system/sw/bin/nologin
nixbld5:x:30005:30000:Nix build user 5:/var/empty:/run/current-system/sw/bin/nologin
nixbld6:x:30006:30000:Nix build user 6:/var/empty:/run/current-system/sw/bin/nologin
nixbld7:x:30007:30000:Nix build user 7:/var/empty:/run/current-system/sw/bin/nologin
nixbld8:x:30008:30000:Nix build user 8:/var/empty:/run/current-system/sw/bin/nologin
nixbld9:x:30009:30000:Nix build user 9:/var/empty:/run/current-system/sw/bin/nologin
nixbld10:x:30010:30000:Nix build user 10:/var/empty:/run/current-system/sw/bin/nologin
'';
"nsswitch.conf".text = ''
hosts: files dns myhostname mymachines
networks: files dns
'';
"services".source = pkgs.iana-etc + "/etc/services";
group.text = ''
root:x:0:
nixbld:x:30000:nixbld1,nixbld10,nixbld2,nixbld3,nixbld4,nixbld5,nixbld6,nixbld7,nixbld8,nixbld9
'';
"ssh/ssh_host_rsa_key.pub".source = ./ssh/ssh_host_rsa_key.pub;
"ssh/ssh_host_rsa_key" = { mode = "0600"; source = ./ssh/ssh_host_rsa_key; };
"ssh/ssh_host_ed25519_key.pub".source = ./ssh/ssh_host_ed25519_key.pub;
"ssh/ssh_host_ed25519_key" = { mode = "0600"; source = ./ssh/ssh_host_ed25519_key; };
};
boot.kernelParams = [ "systemConfig=${config.system.build.toplevel}" ];
boot.kernelPackages = lib.mkDefault (if pkgs.system == "armv7l-linux" then pkgs.linuxPackages_rpi1 else pkgs.linuxPackages);
system.build.earlyMountScript = pkgs.writeScript "dummy" ''
'';
system.build.runvm = pkgs.writeScript "runner" ''
#!${pkgs.stdenv.shell}
exec ${pkgs.qemu_kvm}/bin/qemu-kvm -name not-os -m 512 \
-drive index=0,id=drive1,file=${config.system.build.squashfs},readonly,media=cdrom,format=raw,if=virtio \
-kernel ${config.system.build.kernel}/bzImage -initrd ${config.system.build.initialRamdisk}/initrd -nographic \
-append "console=ttyS0 ${toString config.boot.kernelParams} quiet panic=-1" -no-reboot \
-net nic,model=virtio \
-net user,net=10.0.2.0/24,host=10.0.2.2,dns=10.0.2.3,hostfwd=tcp::2222-:22 \
-device virtio-rng-pci
'';
system.build.dist = pkgs.runCommand "not-os-dist" {} ''
mkdir $out
cp ${config.system.build.squashfs} $out/root.squashfs
cp ${config.system.build.kernel}/*Image $out/kernel
cp ${config.system.build.initialRamdisk}/initrd $out/initrd
echo "${builtins.unsafeDiscardStringContext (toString config.boot.kernelParams)}" > $out/command-line
'';
system.activationScripts.users = ''
# dummy to make setup-etc happy
'';
system.activationScripts.groups = ''
# dummy to make setup-etc happy
'';
system.activationScripts.etc = stringAfter [ "users" "groups" ] config.system.build.etcActivationCommands;
# nix-build -A system.build.toplevel && du -h $(nix-store -qR result) --max=0 -BM|sort -n
system.build.toplevel = pkgs.runCommand "not-os" {
activationScript = config.system.activationScripts.script;
} ''
mkdir $out
cp ${config.system.build.bootStage2} $out/init
substituteInPlace $out/init --subst-var-by systemConfig $out
ln -s ${config.system.path} $out/sw
echo "$activationScript" > $out/activate
substituteInPlace $out/activate --subst-var out
chmod u+x $out/activate
unset activationScript
'';
# nix-build -A squashfs && ls -lLh result
system.build.squashfs = pkgs.callPackage (pkgs.path + "/nixos/lib/make-squashfs.nix") {
storeContents = [ config.system.build.toplevel ];
};
};
}