137 lines
3.5 KiB
Bash
137 lines
3.5 KiB
Bash
#! @shell@
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# runs in chroot
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# creates mandatory directories such as /var
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# finally runs switch-to-configuration optionally registering grub
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set -e
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usage(){
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cat << EOF
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script --install [--fast] [--no-grub]
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--no-pull: don't do a nix-pull to get the latest Nixpkgs
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channel manifest
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--no-grub: don't install grub ( you don't want this ..)
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--debug: set -x
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options which will be passed to nix-env:
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-j n : number of build tasks done simultaniously
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--keep-going: Build as much as possible.
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Description:
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This scripts installs NixOS and should be run within the target chroot.
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The minimal nix system must have been installed previously.
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Eg nixos-prepare-install.sh does this for you.
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Probably this script is distributed along with the minimal nix closure used
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for bootstrapping
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EOF
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exit 1
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}
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die(){ echo "!>> " $@; exit 1; }
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check(){
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[ -e "$1" ] || die "$1 not found $2"
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}
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WARN(){ echo "WARNING: $@"; }
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INFO(){ echo "INFO: " $@; }
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# == configuration ==
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HOME=${HOME:-/root}
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NIXOS=${NIXOS:-/etc/nixos/nixos}
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NIXPKGS=${NIXPKGS:-/etc/nixos/nixpkgs}
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NIXOS_CONFIG=${NIXOS_CONFIG:-/etc/nixos/configuration.nix}
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NIXOS_PULL=${NIXOS_PULL:-1}
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NIXOS_INSTALL_GRUB=${NIXOS_INSTALL_GRUB:-1}
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ps="run-in-chroot"
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check "$NIXOS_CONFIG"
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check "$NIXOS/modules" "nixos repo not found"
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check "$NIXPKGS/pkgs/top-level/all-packages.nix" "nixpgks repo not found"
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for d in /dev /sys /proc; do
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check "$d" "It should have been mounted by $ps"
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done
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# try reusing binaries from host system (which is most likely an installation CD)
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if [ -d /host-system/nix ]; then
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export NIX_OTHER_STORES=/host-system/nix${NIX_OTHER_STORES:+:}$NIX_OTHER_STORES
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else
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WARN "/host-system/nix not found. It should have been --bind mounted by $ps.
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I won't be able to take binaries from the installation media.
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"
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fi
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# == configuration end ==
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INSTALL=
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for arg in $@; do
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case $arg in
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--no-pull) NIXOS_PULL=0;;
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--install) INSTALL=1;;
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--no-grub) NIXOS_INSTALL_GRUB=;;
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--debug) set -x;;
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-j*) NIX_ENV_ARGS="$NIX_ENV_ARGS $arg";;
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--keep-going) NIX_ENV_ARGS="$NIX_ENV_ARGS $arg";;
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*) usage;
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esac
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done
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if [ "$INSTALL" != 1 ]; then
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usage
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fi
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# We don't have locale-archive in the chroot, so clear $LANG.
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export LANG=
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export PATH=@coreutils@/bin
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mkdir -m 01777 -p /tmp
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mkdir -m 0755 -p /var
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# Create the necessary Nix directories on the target device, if they
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# don't already exist.
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mkdir -m 0755 -p \
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/nix/var/nix/gcroots \
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/nix/var/nix/temproots \
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/nix/var/nix/manifests \
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/nix/var/nix/userpool \
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/nix/var/nix/profiles \
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/nix/var/nix/db \
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/nix/var/log/nix/drvs
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# Do a nix-pull to speed up building.
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if test -n "@nixpkgsURL@" -a ${NIXOS_PULL} != 0; then
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@nix@/bin/nix-pull @nixpkgsURL@/MANIFEST || true
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fi
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# Build the specified Nix expression in the target store and install
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# it into the system configuration profile.
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INFO "building the system configuration..."
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@nix@/bin/nix-env \
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-p /nix/var/nix/profiles/system \
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-f "$NIXOS" \
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--set -A system \
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$NIX_ENV_ARGS
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# Mark the target as a NixOS installation, otherwise
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# switch-to-configuration will chicken out.
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touch /etc/NIXOS
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# Grub needs an mtab.
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ln -sfn /proc/mounts /etc/mtab
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# Switch to the new system configuration. This will install Grub with
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# a menu default pointing at the kernel/initrd/etc of the new
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# configuration.
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INFO "finalising the installation..."
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export NIXOS_INSTALL_GRUB
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/nix/var/nix/profiles/system/bin/switch-to-configuration boot
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