405 lines
12 KiB
Bash
405 lines
12 KiB
Bash
#! @shell@
|
||
|
||
if [ -x "@shell@" ]; then export SHELL="@shell@"; fi;
|
||
|
||
set -e
|
||
|
||
showSyntax() {
|
||
exec man nixos-rebuild
|
||
exit 1
|
||
}
|
||
|
||
|
||
# Parse the command line.
|
||
origArgs=("$@")
|
||
extraBuildFlags=()
|
||
action=
|
||
buildNix=1
|
||
fast=
|
||
rollback=
|
||
upgrade=
|
||
repair=
|
||
profile=/nix/var/nix/profiles/system
|
||
buildHost=
|
||
targetHost=
|
||
|
||
while [ "$#" -gt 0 ]; do
|
||
i="$1"; shift 1
|
||
case "$i" in
|
||
--help)
|
||
showSyntax
|
||
;;
|
||
switch|boot|test|build|edit|dry-build|dry-run|dry-activate|build-vm|build-vm-with-bootloader)
|
||
if [ "$i" = dry-run ]; then i=dry-build; fi
|
||
action="$i"
|
||
;;
|
||
--install-grub)
|
||
echo "$0: --install-grub deprecated, use --install-bootloader instead" >&2
|
||
export NIXOS_INSTALL_BOOTLOADER=1
|
||
;;
|
||
--install-bootloader)
|
||
export NIXOS_INSTALL_BOOTLOADER=1
|
||
;;
|
||
--no-build-nix)
|
||
buildNix=
|
||
;;
|
||
--rollback)
|
||
rollback=1
|
||
;;
|
||
--upgrade)
|
||
upgrade=1
|
||
;;
|
||
--repair)
|
||
repair=1
|
||
extraBuildFlags+=("$i")
|
||
;;
|
||
--max-jobs|-j|--cores|-I|--builders)
|
||
j="$1"; shift 1
|
||
extraBuildFlags+=("$i" "$j")
|
||
;;
|
||
--show-trace|--keep-failed|-K|--keep-going|-k|--verbose|-v|-vv|-vvv|-vvvv|-vvvvv|--fallback|--repair|--no-build-output|-Q|-j*)
|
||
extraBuildFlags+=("$i")
|
||
;;
|
||
--option)
|
||
j="$1"; shift 1
|
||
k="$1"; shift 1
|
||
extraBuildFlags+=("$i" "$j" "$k")
|
||
;;
|
||
--fast)
|
||
buildNix=
|
||
fast=1
|
||
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
|
||
;;
|
||
--build-host|h)
|
||
buildHost="$1"
|
||
shift 1
|
||
;;
|
||
--target-host|t)
|
||
targetHost="$1"
|
||
shift 1
|
||
;;
|
||
*)
|
||
echo "$0: unknown option \`$i'"
|
||
exit 1
|
||
;;
|
||
esac
|
||
done
|
||
|
||
|
||
if [ -z "$buildHost" -a -n "$targetHost" ]; then
|
||
buildHost="$targetHost"
|
||
fi
|
||
if [ "$targetHost" = localhost ]; then
|
||
targetHost=
|
||
fi
|
||
if [ "$buildHost" = localhost ]; then
|
||
buildHost=
|
||
fi
|
||
|
||
buildHostCmd() {
|
||
if [ -z "$buildHost" ]; then
|
||
"$@"
|
||
elif [ -n "$remoteNix" ]; then
|
||
ssh $SSHOPTS "$buildHost" PATH="$remoteNix:$PATH" "$@"
|
||
else
|
||
ssh $SSHOPTS "$buildHost" "$@"
|
||
fi
|
||
}
|
||
|
||
targetHostCmd() {
|
||
if [ -z "$targetHost" ]; then
|
||
"$@"
|
||
else
|
||
ssh $SSHOPTS "$targetHost" "$@"
|
||
fi
|
||
}
|
||
|
||
copyToTarget() {
|
||
if ! [ "$targetHost" = "$buildHost" ]; then
|
||
if [ -z "$targetHost" ]; then
|
||
NIX_SSHOPTS=$SSHOPTS nix-copy-closure --from "$buildHost" "$1"
|
||
elif [ -z "$buildHost" ]; then
|
||
NIX_SSHOPTS=$SSHOPTS nix-copy-closure --to "$targetHost" "$1"
|
||
else
|
||
buildHostCmd nix-copy-closure --to "$targetHost" "$1"
|
||
fi
|
||
fi
|
||
}
|
||
|
||
nixBuild() {
|
||
if [ -z "$buildHost" ]; then
|
||
nix-build "$@"
|
||
else
|
||
local instArgs=()
|
||
local buildArgs=()
|
||
|
||
while [ "$#" -gt 0 ]; do
|
||
local i="$1"; shift 1
|
||
case "$i" in
|
||
-o)
|
||
local out="$1"; shift 1
|
||
buildArgs+=("--add-root" "$out" "--indirect")
|
||
;;
|
||
-A)
|
||
local j="$1"; shift 1
|
||
instArgs+=("$i" "$j")
|
||
;;
|
||
-I) # We don't want this in buildArgs
|
||
shift 1
|
||
;;
|
||
--no-out-link) # We don't want this in buildArgs
|
||
;;
|
||
"<"*) # nix paths
|
||
instArgs+=("$i")
|
||
;;
|
||
*)
|
||
buildArgs+=("$i")
|
||
;;
|
||
esac
|
||
done
|
||
|
||
local drv="$(nix-instantiate "${instArgs[@]}" "${extraBuildFlags[@]}")"
|
||
if [ -a "$drv" ]; then
|
||
NIX_SSHOPTS=$SSHOPTS nix-copy-closure --to "$buildHost" "$drv"
|
||
buildHostCmd nix-store -r "$drv" "${buildArgs[@]}"
|
||
else
|
||
echo "nix-instantiate failed"
|
||
exit 1
|
||
fi
|
||
fi
|
||
}
|
||
|
||
|
||
if [ -z "$action" ]; then showSyntax; fi
|
||
|
||
# Only run shell scripts from the Nixpkgs tree if the action is
|
||
# "switch", "boot", or "test". With other actions (such as "build"),
|
||
# the user may reasonably expect that no code from the Nixpkgs tree is
|
||
# executed, so it's safe to run nixos-rebuild against a potentially
|
||
# untrusted tree.
|
||
canRun=
|
||
if [ "$action" = switch -o "$action" = boot -o "$action" = test ]; then
|
||
canRun=1
|
||
fi
|
||
|
||
|
||
# If ‘--upgrade’ is given, run ‘nix-channel --update nixos’.
|
||
if [ -n "$upgrade" -a -z "$_NIXOS_REBUILD_REEXEC" ]; then
|
||
nix-channel --update nixos
|
||
|
||
# If there are other channels that contain a file called
|
||
# ".update-on-nixos-rebuild", update them as well.
|
||
for channelpath in /nix/var/nix/profiles/per-user/root/channels/*; do
|
||
if [ -e "$channelpath/.update-on-nixos-rebuild" ]; then
|
||
nix-channel --update "$(basename "$channelpath")"
|
||
fi
|
||
done
|
||
fi
|
||
|
||
# Make sure that we use the Nix package we depend on, not something
|
||
# else from the PATH for nix-{env,instantiate,build}. This is
|
||
# important, because NixOS defaults the architecture of the rebuilt
|
||
# system to the architecture of the nix-* binaries used. So if on an
|
||
# amd64 system the user has an i686 Nix package in her PATH, then we
|
||
# would silently downgrade the whole system to be i686 NixOS on the
|
||
# next reboot.
|
||
if [ -z "$_NIXOS_REBUILD_REEXEC" ]; then
|
||
export PATH=@nix@/bin:$PATH
|
||
fi
|
||
|
||
# Re-execute nixos-rebuild from the Nixpkgs tree.
|
||
if [ -z "$_NIXOS_REBUILD_REEXEC" -a -n "$canRun" -a -z "$fast" ]; then
|
||
if p=$(nix-build --no-out-link --expr 'with import <nixpkgs/nixos> {}; config.system.build.nixos-rebuild' "${extraBuildFlags[@]}"); then
|
||
export _NIXOS_REBUILD_REEXEC=1
|
||
exec $p/bin/nixos-rebuild "${origArgs[@]}"
|
||
exit 1
|
||
fi
|
||
fi
|
||
|
||
# Find configuration.nix and open editor instead of building.
|
||
if [ "$action" = edit ]; then
|
||
NIXOS_CONFIG=${NIXOS_CONFIG:-$(nix-instantiate --find-file nixos-config)}
|
||
exec "${EDITOR:-nano}" "$NIXOS_CONFIG"
|
||
exit 1
|
||
fi
|
||
|
||
|
||
tmpDir=$(mktemp -t -d nixos-rebuild.XXXXXX)
|
||
SSHOPTS="$NIX_SSHOPTS -o ControlMaster=auto -o ControlPath=$tmpDir/ssh-%n -o ControlPersist=60"
|
||
|
||
cleanup() {
|
||
for ctrl in "$tmpDir"/ssh-*; do
|
||
ssh -o ControlPath="$ctrl" -O exit dummyhost 2>/dev/null || true
|
||
done
|
||
rm -rf "$tmpDir"
|
||
}
|
||
trap cleanup EXIT
|
||
|
||
|
||
|
||
# If the Nix daemon is running, then use it. This allows us to use
|
||
# the latest Nix from Nixpkgs (below) for expression evaluation, while
|
||
# still using the old Nix (via the daemon) for actual store access.
|
||
# This matters if the new Nix in Nixpkgs has a schema change. It
|
||
# would upgrade the schema, which should only happen once we actually
|
||
# switch to the new configuration.
|
||
# If --repair is given, don't try to use the Nix daemon, because the
|
||
# flag can only be used directly.
|
||
if [ -z "$repair" ] && systemctl show nix-daemon.socket nix-daemon.service | grep -q ActiveState=active; then
|
||
export NIX_REMOTE=${NIX_REMOTE-daemon}
|
||
fi
|
||
|
||
|
||
# First build Nix, since NixOS may require a newer version than the
|
||
# current one.
|
||
if [ -n "$rollback" -o "$action" = dry-build ]; then
|
||
buildNix=
|
||
fi
|
||
|
||
nixSystem() {
|
||
machine="$(uname -m)"
|
||
if [[ "$machine" =~ i.86 ]]; then
|
||
machine=i686
|
||
fi
|
||
echo $machine-linux
|
||
}
|
||
|
||
prebuiltNix() {
|
||
machine="$1"
|
||
if [ "$machine" = x86_64 ]; then
|
||
echo @nix_x86_64_linux@
|
||
elif [[ "$machine" =~ i.86 ]]; then
|
||
echo @nix_i686_linux@
|
||
else
|
||
echo "$0: unsupported platform"
|
||
exit 1
|
||
fi
|
||
}
|
||
|
||
remotePATH=
|
||
|
||
if [ -n "$buildNix" ]; then
|
||
echo "building Nix..." >&2
|
||
nixDrv=
|
||
if ! nixDrv="$(nix-instantiate '<nixpkgs/nixos>' --add-root $tmpDir/nix.drv --indirect -A config.nix.package.out "${extraBuildFlags[@]}")"; then
|
||
if ! nixDrv="$(nix-instantiate '<nixpkgs>' --add-root $tmpDir/nix.drv --indirect -A nix "${extraBuildFlags[@]}")"; then
|
||
if ! nixStorePath="$(nix-instantiate --eval '<nixpkgs/nixos/modules/installer/tools/nix-fallback-paths.nix>' -A $(nixSystem) | sed -e 's/^"//' -e 's/"$//')"; then
|
||
nixStorePath="$(prebuiltNix "$(uname -m)")"
|
||
fi
|
||
if ! nix-store -r $nixStorePath --add-root $tmpDir/nix --indirect \
|
||
--option extra-binary-caches https://cache.nixos.org/; then
|
||
echo "warning: don't know how to get latest Nix" >&2
|
||
fi
|
||
# Older version of nix-store -r don't support --add-root.
|
||
[ -e $tmpDir/nix ] || ln -sf $nixStorePath $tmpDir/nix
|
||
if [ -n "$buildHost" ]; then
|
||
remoteNixStorePath="$(prebuiltNix "$(buildHostCmd uname -m)")"
|
||
remoteNix="$remoteNixStorePath/bin"
|
||
if ! buildHostCmd nix-store -r $remoteNixStorePath \
|
||
--option extra-binary-caches https://cache.nixos.org/ >/dev/null; then
|
||
remoteNix=
|
||
echo "warning: don't know how to get latest Nix" >&2
|
||
fi
|
||
fi
|
||
fi
|
||
fi
|
||
if [ -a "$nixDrv" ]; then
|
||
nix-store -r "$nixDrv"'!'"out" --add-root $tmpDir/nix --indirect >/dev/null
|
||
if [ -n "$buildHost" ]; then
|
||
nix-copy-closure --to "$buildHost" "$nixDrv"
|
||
# The nix build produces multiple outputs, we add them all to the remote path
|
||
for p in $(buildHostCmd nix-store -r "$(readlink "$nixDrv")" "${buildArgs[@]}"); do
|
||
remoteNix="$remoteNix${remoteNix:+:}$p/bin"
|
||
done
|
||
fi
|
||
fi
|
||
PATH="$tmpDir/nix/bin:$PATH"
|
||
fi
|
||
|
||
|
||
# Update the version suffix if we're building from Git (so that
|
||
# nixos-version shows something useful).
|
||
if [ -n "$canRun" ]; then
|
||
if nixpkgs=$(nix-instantiate --find-file nixpkgs "${extraBuildFlags[@]}"); then
|
||
suffix=$($SHELL $nixpkgs/nixos/modules/installer/tools/get-version-suffix "${extraBuildFlags[@]}" || true)
|
||
if [ -n "$suffix" ]; then
|
||
echo -n "$suffix" > "$nixpkgs/.version-suffix" || true
|
||
fi
|
||
fi
|
||
fi
|
||
|
||
|
||
if [ "$action" = dry-build ]; 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 "$action" = boot ]; then
|
||
pathToConfig="$(nixBuild '<nixpkgs/nixos>' --no-out-link -A system "${extraBuildFlags[@]}")"
|
||
copyToTarget "$pathToConfig"
|
||
targetHostCmd nix-env -p "$profile" --set "$pathToConfig"
|
||
elif [ "$action" = test -o "$action" = build -o "$action" = dry-build -o "$action" = dry-activate ]; then
|
||
pathToConfig="$(nixBuild '<nixpkgs/nixos>' -A system -k "${extraBuildFlags[@]}")"
|
||
elif [ "$action" = build-vm ]; then
|
||
pathToConfig="$(nixBuild '<nixpkgs/nixos>' -A vm -k "${extraBuildFlags[@]}")"
|
||
elif [ "$action" = build-vm-with-bootloader ]; then
|
||
pathToConfig="$(nixBuild '<nixpkgs/nixos>' -A vmWithBootLoader -k "${extraBuildFlags[@]}")"
|
||
else
|
||
showSyntax
|
||
fi
|
||
# Copy build to target host if we haven't already done it
|
||
if ! [ "$action" = switch -o "$action" = boot ]; then
|
||
copyToTarget "$pathToConfig"
|
||
fi
|
||
else # [ -n "$rollback" ]
|
||
if [ "$action" = switch -o "$action" = boot ]; then
|
||
targetHostCmd nix-env --rollback -p "$profile"
|
||
pathToConfig="$profile"
|
||
elif [ "$action" = test -o "$action" = build ]; then
|
||
systemNumber=$(
|
||
targetHostCmd nix-env -p "$profile" --list-generations |
|
||
sed -n '/current/ {g; p;}; s/ *\([0-9]*\).*/\1/; h'
|
||
)
|
||
pathToConfig="$profile"-${systemNumber}-link
|
||
if [ -z "$targetHost" ]; then
|
||
ln -sT "$pathToConfig" ./result
|
||
fi
|
||
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 "$action" = test -o "$action" = dry-activate ]; then
|
||
if ! targetHostCmd $pathToConfig/bin/switch-to-configuration "$action"; then
|
||
echo "warning: error(s) occurred while switching to the new configuration" >&2
|
||
exit 1
|
||
fi
|
||
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
|