222 lines
6.8 KiB
Bash
222 lines
6.8 KiB
Bash
#! @shell@ -e
|
||
|
||
showSyntax() {
|
||
# !!! more or less cut&paste from
|
||
# system/switch-to-configuration.sh (which we call, of course).
|
||
cat <<EOF
|
||
Usage: $0 [OPTIONS...] OPERATION
|
||
|
||
The operation is one of the following:
|
||
|
||
switch: make the configuration the boot default and activate now
|
||
boot: make the configuration the boot default
|
||
test: activate the configuration, but don't make it the boot default
|
||
build: build the configuration, but don't make it the default or
|
||
activate it
|
||
build-vm: build a virtual machine containing the configuration
|
||
(useful for testing)
|
||
build-vm-with-bootloader:
|
||
like build-vm, but include a boot loader in the VM
|
||
dry-run: just show what store paths would be built/downloaded
|
||
|
||
Options:
|
||
|
||
--upgrade fetch the latest version of NixOS before rebuilding
|
||
--install-grub (re-)install the Grub bootloader
|
||
--no-build-nix don't build the latest Nix from Nixpkgs before
|
||
building NixOS
|
||
--rollback restore the previous NixOS configuration (only
|
||
with switch, boot, test, build)
|
||
--profile-name / -p install in the specified system profile
|
||
--fast same as --no-build-nix --show-trace
|
||
|
||
Various nix-build options are also accepted, in particular:
|
||
|
||
--show-trace show a detailed stack trace for evaluation errors
|
||
|
||
Environment variables affecting nixos-rebuild:
|
||
|
||
\$NIX_PATH Nix expression search path
|
||
\$NIXOS_CONFIG path to the NixOS system configuration specification
|
||
EOF
|
||
exit 1
|
||
}
|
||
|
||
|
||
# Parse the command line.
|
||
extraBuildFlags=()
|
||
action=
|
||
buildNix=1
|
||
rollback=
|
||
upgrade=
|
||
repair=
|
||
profile=/nix/var/nix/profiles/system
|
||
|
||
while [ "$#" -gt 0 ]; do
|
||
i="$1"; shift 1
|
||
case "$i" in
|
||
--help)
|
||
showSyntax
|
||
;;
|
||
switch|boot|test|build|dry-run|build-vm|build-vm-with-bootloader)
|
||
action="$i"
|
||
;;
|
||
--install-grub)
|
||
export NIXOS_INSTALL_GRUB=1
|
||
;;
|
||
--no-build-nix)
|
||
buildNix=
|
||
;;
|
||
--rollback)
|
||
rollback=1
|
||
;;
|
||
--upgrade)
|
||
upgrade=1
|
||
;;
|
||
--repair)
|
||
repair=1
|
||
extraBuildFlags+=("$i")
|
||
;;
|
||
--show-trace|--no-build-hook|--keep-failed|-K|--keep-going|-k|--verbose|-v|-vv|-vvv|-vvvv|-vvvvv|--fallback|--repair)
|
||
extraBuildFlags+=("$i")
|
||
;;
|
||
--max-jobs|-j|--cores|-I)
|
||
j="$1"; shift 1
|
||
extraBuildFlags+=("$i" "$j")
|
||
;;
|
||
--option)
|
||
j="$1"; shift 1
|
||
k="$1"; shift 1
|
||
extraBuildFlags+=("$i" "$j" "$k")
|
||
;;
|
||
--fast)
|
||
buildNix=
|
||
extraBuildFlags+=(--show-trace)
|
||
;;
|
||
--profile-name|-p)
|
||
if [ -z "$1" ]; then
|
||
echo "$0: ‘--profile-name’ requires an argument"
|
||
exit 1
|
||
fi
|
||
if [ "$1" != system ]; then
|
||
profile="/nix/var/nix/profiles/system-profiles/$1"
|
||
mkdir -p -m 0755 "$(dirname "$profile")"
|
||
fi
|
||
shift 1
|
||
;;
|
||
*)
|
||
echo "$0: unknown option \`$i'"
|
||
exit 1
|
||
;;
|
||
esac
|
||
done
|
||
|
||
if [ -z "$action" ]; then showSyntax; fi
|
||
|
||
if [ -n "$rollback" ]; then
|
||
buildNix=
|
||
fi
|
||
|
||
|
||
tmpDir=$(mktemp -t -d nixos-rebuild.XXXXXX)
|
||
trap 'rm -rf "$tmpDir"' EXIT
|
||
|
||
|
||
# If the Nix daemon is running, then use it. This allows us to use
|
||
# the latest Nix from Nixpkgs (below) for expression evaluation, while
|
||
# still using the old Nix (via the daemon) for actual store access.
|
||
# This matters if the new Nix in Nixpkgs has a schema change. It
|
||
# would upgrade the schema, which should only happen once we actually
|
||
# switch to the new configuration.
|
||
# If --repair is given, don't try to use the Nix daemon, because the
|
||
# flag can only be used directly.
|
||
if [ -z "$repair" ] && systemctl show nix-daemon.socket nix-daemon.service | grep -q ActiveState=active; then
|
||
export NIX_REMOTE=${NIX_REMOTE:-daemon}
|
||
fi
|
||
|
||
|
||
# If ‘--upgrade’ is given, run ‘nix-channel --update nixos’.
|
||
if [ -n "$upgrade" ]; then
|
||
nix-channel --update nixos
|
||
fi
|
||
|
||
|
||
# First build Nix, since NixOS may require a newer version than the
|
||
# current one. Of course, the same goes for Nixpkgs, but Nixpkgs is
|
||
# more conservative.
|
||
if [ "$action" != dry-run -a -n "$buildNix" ]; then
|
||
echo "building Nix..." >&2
|
||
if ! nix-build '<nixos>' -A config.environment.nix -o $tmpDir/nix "${extraBuildFlags[@]}" > /dev/null; then
|
||
if ! nix-build '<nixos>' -A nixFallback -o $tmpDir/nix "${extraBuildFlags[@]}" > /dev/null; then
|
||
nix-build '<nixpkgs>' -A nixUnstable -o $tmpDir/nix "${extraBuildFlags[@]}" > /dev/null
|
||
fi
|
||
fi
|
||
PATH=$tmpDir/nix/bin:$PATH
|
||
fi
|
||
|
||
|
||
# Update the version suffix if we're building from Git (so that
|
||
# nixos-version shows something useful).
|
||
if nixos=$(nix-instantiate --find-file nixos "${extraBuildFlags[@]}"); then
|
||
suffix=$(@shell@ $nixos/modules/installer/tools/get-version-suffix "${extraBuildFlags[@]}")
|
||
if [ -n "$suffix" ]; then
|
||
echo -n "$suffix" > "$nixos/.version-suffix" || true
|
||
fi
|
||
fi
|
||
|
||
|
||
if [ "$action" = dry-run ]; then
|
||
extraBuildFlags+=(--dry-run)
|
||
fi
|
||
|
||
|
||
# Either upgrade the configuration in the system profile (for "switch"
|
||
# or "boot"), or just build it and create a symlink "result" in the
|
||
# current directory (for "build" and "test").
|
||
if [ -z "$rollback" ]; then
|
||
echo "building the system configuration..." >&2
|
||
if [ "$action" = switch -o "$action" = boot ]; then
|
||
nix-env "${extraBuildFlags[@]}" -p "$profile" -f '<nixos>' --set -A system
|
||
pathToConfig="$profile"
|
||
elif [ "$action" = test -o "$action" = build -o "$action" = dry-run ]; then
|
||
nix-build '<nixos>' -A system -K -k "${extraBuildFlags[@]}" > /dev/null
|
||
pathToConfig=./result
|
||
elif [ "$action" = build-vm ]; then
|
||
nix-build '<nixos>' -A vm -K -k "${extraBuildFlags[@]}" > /dev/null
|
||
pathToConfig=./result
|
||
elif [ "$action" = build-vm-with-bootloader ]; then
|
||
nix-build '<nixos>' -A vmWithBootLoader -K -k "${extraBuildFlags[@]}" > /dev/null
|
||
pathToConfig=./result
|
||
else
|
||
showSyntax
|
||
fi
|
||
else # [ -n "$rollback" ]
|
||
if [ "$action" = switch -o "$action" = boot ]; then
|
||
nix-env --rollback -p "$profile"
|
||
pathToConfig="$profile"
|
||
elif [ "$action" = test -o "$action" = build ]; then
|
||
systemNumber=$(
|
||
nix-env -p "$profile" --list-generations |
|
||
sed -n '/current/ {g; p;}; s/ *\([0-9]*\).*/\1/; h'
|
||
)
|
||
ln -sT "$profile"-${systemNumber}-link ./result
|
||
pathToConfig=./result
|
||
else
|
||
showSyntax
|
||
fi
|
||
fi
|
||
|
||
|
||
# If we're not just building, then make the new configuration the boot
|
||
# default and/or activate it now.
|
||
if [ "$action" = switch -o "$action" = boot -o "$action" = test ]; then
|
||
$pathToConfig/bin/switch-to-configuration "$action"
|
||
fi
|
||
|
||
|
||
if [ "$action" = build-vm ]; then
|
||
cat >&2 <<EOF
|
||
|
||
Done. The virtual machine can be started by running $(echo $pathToConfig/bin/run-*-vm).
|
||
EOF
|
||
fi
|