mirror of
https://github.com/NixOS/nixpkgs.git
synced 2024-12-11 16:23:26 +00:00
595 lines
19 KiB
Bash
Executable File
595 lines
19 KiB
Bash
Executable File
#! @runtimeShell@
|
||
# shellcheck shell=bash
|
||
|
||
if [ -x "@runtimeShell@" ]; then export SHELL="@runtimeShell@"; fi;
|
||
|
||
set -e
|
||
set -o pipefail
|
||
shopt -s inherit_errexit
|
||
|
||
export PATH=@path@:$PATH
|
||
|
||
showSyntax() {
|
||
exec man nixos-rebuild
|
||
exit 1
|
||
}
|
||
|
||
|
||
# Parse the command line.
|
||
origArgs=("$@")
|
||
copyClosureFlags=()
|
||
extraBuildFlags=()
|
||
lockFlags=()
|
||
flakeFlags=(--extra-experimental-features 'nix-command flakes')
|
||
action=
|
||
buildNix=1
|
||
fast=
|
||
rollback=
|
||
upgrade=
|
||
upgrade_all=
|
||
profile=/nix/var/nix/profiles/system
|
||
specialisation=
|
||
buildHost=
|
||
targetHost=
|
||
remoteSudo=
|
||
verboseScript=
|
||
noFlake=
|
||
# comma separated list of vars to preserve when using sudo
|
||
preservedSudoVars=NIXOS_INSTALL_BOOTLOADER
|
||
|
||
# log the given argument to stderr
|
||
log() {
|
||
echo "$@" >&2
|
||
}
|
||
|
||
while [ "$#" -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 [ "$i" = dry-run ]; then i=dry-build; fi
|
||
# exactly one action mandatory, bail out if multiple are given
|
||
if [ -n "$action" ]; then showSyntax; fi
|
||
action="$i"
|
||
;;
|
||
--install-grub)
|
||
log "$0: --install-grub deprecated, use --install-bootloader instead"
|
||
export NIXOS_INSTALL_BOOTLOADER=1
|
||
;;
|
||
--install-bootloader)
|
||
export NIXOS_INSTALL_BOOTLOADER=1
|
||
;;
|
||
--no-build-nix)
|
||
buildNix=
|
||
;;
|
||
--rollback)
|
||
rollback=1
|
||
;;
|
||
--upgrade)
|
||
upgrade=1
|
||
;;
|
||
--upgrade-all)
|
||
upgrade=1
|
||
upgrade_all=1
|
||
;;
|
||
--use-substitutes|-s)
|
||
copyClosureFlags+=("$i")
|
||
;;
|
||
-I|--max-jobs|-j|--cores|--builders)
|
||
j="$1"; shift 1
|
||
extraBuildFlags+=("$i" "$j")
|
||
;;
|
||
-j*|--quiet|--print-build-logs|-L|--no-build-output|-Q| --show-trace|--keep-going|-k|--keep-failed|-K|--fallback|--refresh|--repair|--impure|--offline|--no-net)
|
||
extraBuildFlags+=("$i")
|
||
;;
|
||
--verbose|-v|-vv|-vvv|-vvvv|-vvvvv)
|
||
verboseScript="true"
|
||
extraBuildFlags+=("$i")
|
||
;;
|
||
--option)
|
||
j="$1"; shift 1
|
||
k="$1"; shift 1
|
||
extraBuildFlags+=("$i" "$j" "$k")
|
||
;;
|
||
--fast)
|
||
buildNix=
|
||
fast=1
|
||
;;
|
||
--profile-name|-p)
|
||
if [ -z "$1" ]; then
|
||
log "$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
|
||
;;
|
||
--specialisation|-c)
|
||
if [ -z "$1" ]; then
|
||
log "$0: ‘--specialisation’ requires an argument"
|
||
exit 1
|
||
fi
|
||
specialisation="$1"
|
||
shift 1
|
||
;;
|
||
--build-host|h)
|
||
buildHost="$1"
|
||
shift 1
|
||
;;
|
||
--target-host|t)
|
||
targetHost="$1"
|
||
shift 1
|
||
;;
|
||
--use-remote-sudo)
|
||
remoteSudo=1
|
||
;;
|
||
--flake)
|
||
flake="$1"
|
||
shift 1
|
||
;;
|
||
--no-flake)
|
||
noFlake=1
|
||
;;
|
||
--recreate-lock-file|--no-update-lock-file|--no-write-lock-file|--no-registries|--commit-lock-file)
|
||
lockFlags+=("$i")
|
||
;;
|
||
--update-input)
|
||
j="$1"; shift 1
|
||
lockFlags+=("$i" "$j")
|
||
;;
|
||
--override-input)
|
||
j="$1"; shift 1
|
||
k="$1"; shift 1
|
||
lockFlags+=("$i" "$j" "$k")
|
||
;;
|
||
*)
|
||
log "$0: unknown option \`$i'"
|
||
exit 1
|
||
;;
|
||
esac
|
||
done
|
||
|
||
if [[ -n "$SUDO_USER" || -n $remoteSudo ]]; then
|
||
maybeSudo=(sudo --preserve-env="$preservedSudoVars" --)
|
||
fi
|
||
|
||
# log the given argument to stderr if verbose mode is on
|
||
logVerbose() {
|
||
if [ -n "$verboseScript" ]; then
|
||
echo "$@" >&2
|
||
fi
|
||
}
|
||
|
||
# Run a command, logging it first if verbose mode is on
|
||
runCmd() {
|
||
logVerbose "$" "$@"
|
||
"$@"
|
||
}
|
||
|
||
buildHostCmd() {
|
||
if [ -z "$buildHost" ]; then
|
||
runCmd "$@"
|
||
elif [ -n "$remoteNix" ]; then
|
||
runCmd ssh $SSHOPTS "$buildHost" "${maybeSudo[@]}" env PATH="$remoteNix":'$PATH' "$@"
|
||
else
|
||
runCmd ssh $SSHOPTS "$buildHost" "${maybeSudo[@]}" "$@"
|
||
fi
|
||
}
|
||
|
||
targetHostCmd() {
|
||
if [ -z "$targetHost" ]; then
|
||
runCmd "${maybeSudo[@]}" "$@"
|
||
else
|
||
runCmd ssh $SSHOPTS "$targetHost" "${maybeSudo[@]}" "$@"
|
||
fi
|
||
}
|
||
|
||
copyToTarget() {
|
||
if ! [ "$targetHost" = "$buildHost" ]; then
|
||
if [ -z "$targetHost" ]; then
|
||
logVerbose "Running nix-copy-closure with these NIX_SSHOPTS: $SSHOPTS"
|
||
NIX_SSHOPTS=$SSHOPTS runCmd nix-copy-closure "${copyClosureFlags[@]}" --from "$buildHost" "$1"
|
||
elif [ -z "$buildHost" ]; then
|
||
logVerbose "Running nix-copy-closure with these NIX_SSHOPTS: $SSHOPTS"
|
||
NIX_SSHOPTS=$SSHOPTS runCmd nix-copy-closure "${copyClosureFlags[@]}" --to "$targetHost" "$1"
|
||
else
|
||
buildHostCmd nix-copy-closure "${copyClosureFlags[@]}" --to "$targetHost" "$1"
|
||
fi
|
||
fi
|
||
}
|
||
|
||
nixBuild() {
|
||
logVerbose "Building in legacy (non-flake) mode."
|
||
if [ -z "$buildHost" ]; then
|
||
logVerbose "No --build-host given, running nix-build locally"
|
||
runCmd nix-build "$@"
|
||
else
|
||
logVerbose "buildHost set to \"$buildHost\", running nix-build remotely"
|
||
local instArgs=()
|
||
local buildArgs=()
|
||
local drv=
|
||
|
||
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+=("$i")
|
||
;;
|
||
esac
|
||
done
|
||
|
||
drv="$(runCmd nix-instantiate "${instArgs[@]}" "${extraBuildFlags[@]}")"
|
||
if [ -a "$drv" ]; then
|
||
logVerbose "Running nix-copy-closure with these NIX_SSHOPTS: $SSHOPTS"
|
||
NIX_SSHOPTS=$SSHOPTS runCmd nix-copy-closure --to "$buildHost" "$drv"
|
||
buildHostCmd nix-store -r "$drv" "${buildArgs[@]}"
|
||
else
|
||
log "nix-instantiate failed"
|
||
exit 1
|
||
fi
|
||
fi
|
||
}
|
||
|
||
nixFlakeBuild() {
|
||
logVerbose "Building in flake mode."
|
||
if [[ -z "$buildHost" && -z "$targetHost" && "$action" != switch && "$action" != boot && "$action" != test && "$action" != dry-activate ]]
|
||
then
|
||
runCmd nix "${flakeFlags[@]}" build "$@"
|
||
readlink -f ./result
|
||
elif [ -z "$buildHost" ]; then
|
||
runCmd nix "${flakeFlags[@]}" build "$@" --out-link "${tmpDir}/result"
|
||
readlink -f "${tmpDir}/result"
|
||
else
|
||
local attr="$1"
|
||
shift 1
|
||
local evalArgs=()
|
||
local buildArgs=()
|
||
local drv=
|
||
|
||
while [ "$#" -gt 0 ]; do
|
||
local i="$1"; shift 1
|
||
case "$i" in
|
||
--recreate-lock-file|--no-update-lock-file|--no-write-lock-file|--no-registries|--commit-lock-file)
|
||
evalArgs+=("$i")
|
||
;;
|
||
--update-input)
|
||
local j="$1"; shift 1
|
||
evalArgs+=("$i" "$j")
|
||
;;
|
||
--override-input)
|
||
local j="$1"; shift 1
|
||
local k="$1"; shift 1
|
||
evalArgs+=("$i" "$j" "$k")
|
||
;;
|
||
--impure) # We don't want this in buildArgs, it's only needed at evaluation time, and unsupported during realisation
|
||
;;
|
||
*)
|
||
buildArgs+=("$i")
|
||
;;
|
||
esac
|
||
done
|
||
|
||
drv="$(runCmd nix "${flakeFlags[@]}" eval --raw "${attr}.drvPath" "${evalArgs[@]}" "${extraBuildFlags[@]}")"
|
||
if [ -a "$drv" ]; then
|
||
logVerbose "Running nix with these NIX_SSHOPTS: $SSHOPTS"
|
||
NIX_SSHOPTS=$SSHOPTS runCmd nix "${flakeFlags[@]}" copy --derivation --to "ssh://$buildHost" "$drv"
|
||
buildHostCmd nix-store -r "$drv" "${buildArgs[@]}"
|
||
else
|
||
log "nix eval failed"
|
||
exit 1
|
||
fi
|
||
fi
|
||
}
|
||
|
||
|
||
if [ -z "$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 [[ "$action" = switch || "$action" = boot || "$action" = test ]]; then
|
||
canRun=1
|
||
fi
|
||
|
||
|
||
# If ‘--upgrade’ or `--upgrade-all` is given,
|
||
# run ‘nix-channel --update nixos’.
|
||
if [[ -n $upgrade && -z $_NIXOS_REBUILD_REEXEC && -z $flake ]]; then
|
||
# If --upgrade-all is passed, or there are other channels that
|
||
# contain a file called ".update-on-nixos-rebuild", update them as
|
||
# well. Also upgrade the nixos channel.
|
||
|
||
for channelpath in /nix/var/nix/profiles/per-user/root/channels/*; do
|
||
channel_name=$(basename "$channelpath")
|
||
|
||
if [[ "$channel_name" == "nixos" ]]; then
|
||
runCmd nix-channel --update "$channel_name"
|
||
elif [ -e "$channelpath/.update-on-nixos-rebuild" ]; then
|
||
runCmd nix-channel --update "$channel_name"
|
||
elif [[ -n $upgrade_all ]] ; then
|
||
runCmd nix-channel --update "$channel_name"
|
||
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
|
||
|
||
# Use /etc/nixos/flake.nix if it exists. It can be a symlink to the
|
||
# actual flake.
|
||
if [[ -z $flake && -e /etc/nixos/flake.nix && -z $noFlake ]]; then
|
||
flake="$(dirname "$(readlink -f /etc/nixos/flake.nix)")"
|
||
fi
|
||
|
||
# For convenience, use the hostname as the default configuration to
|
||
# build from the flake.
|
||
if [[ -n $flake ]]; then
|
||
if [[ $flake =~ ^(.*)\#([^\#\"]*)$ ]]; then
|
||
flake="${BASH_REMATCH[1]}"
|
||
flakeAttr="${BASH_REMATCH[2]}"
|
||
fi
|
||
if [[ -z $flakeAttr ]]; then
|
||
read -r hostname < /proc/sys/kernel/hostname
|
||
if [[ -z $hostname ]]; then
|
||
hostname=default
|
||
fi
|
||
flakeAttr="nixosConfigurations.\"$hostname\""
|
||
else
|
||
flakeAttr="nixosConfigurations.\"$flakeAttr\""
|
||
fi
|
||
fi
|
||
|
||
if [[ ! -z "$specialisation" && ! "$action" = switch && ! "$action" = test ]]; then
|
||
log "error: ‘--specialisation’ can only be used with ‘switch’ and ‘test’"
|
||
exit 1
|
||
fi
|
||
|
||
tmpDir=$(mktemp -t -d nixos-rebuild.XXXXXX)
|
||
|
||
cleanup() {
|
||
for ctrl in "$tmpDir"/ssh-*; do
|
||
ssh -o ControlPath="$ctrl" -O exit dummyhost 2>/dev/null || true
|
||
done
|
||
rm -rf "$tmpDir"
|
||
}
|
||
trap cleanup EXIT
|
||
|
||
|
||
# Re-execute nixos-rebuild from the Nixpkgs tree.
|
||
if [[ -z $_NIXOS_REBUILD_REEXEC && -n $canRun && -z $fast ]]; then
|
||
if [[ -z $flake ]]; then
|
||
if p=$(runCmd nix-build --no-out-link --expr 'with import <nixpkgs/nixos> {}; config.system.build.nixos-rebuild' "${extraBuildFlags[@]}"); then
|
||
SHOULD_REEXEC=1
|
||
fi
|
||
else
|
||
runCmd nix "${flakeFlags[@]}" build --out-link "${tmpDir}/nixos-rebuild" "$flake#$flakeAttr.config.system.build.nixos-rebuild" "${extraBuildFlags[@]}" "${lockFlags[@]}"
|
||
if p=$(readlink -e "${tmpDir}/nixos-rebuild"); then
|
||
SHOULD_REEXEC=1
|
||
fi
|
||
fi
|
||
|
||
if [[ -n $SHOULD_REEXEC ]]; then
|
||
export _NIXOS_REBUILD_REEXEC=1
|
||
# Manually call cleanup as the EXIT trap is not triggered when using exec
|
||
cleanup
|
||
runCmd exec "$p/bin/nixos-rebuild" "${origArgs[@]}"
|
||
exit 1
|
||
fi
|
||
fi
|
||
|
||
# Find configuration.nix and open editor instead of building.
|
||
if [ "$action" = edit ]; then
|
||
if [[ -z $flake ]]; then
|
||
NIXOS_CONFIG=${NIXOS_CONFIG:-$(runCmd nix-instantiate --find-file nixos-config)}
|
||
if [[ -d $NIXOS_CONFIG ]]; then
|
||
NIXOS_CONFIG=$NIXOS_CONFIG/default.nix
|
||
fi
|
||
runCmd exec ${EDITOR:-nano} "$NIXOS_CONFIG"
|
||
else
|
||
runCmd exec nix "${flakeFlags[@]}" edit "${lockFlags[@]}" -- "$flake#$flakeAttr"
|
||
fi
|
||
exit 1
|
||
fi
|
||
|
||
SSHOPTS="$NIX_SSHOPTS -o ControlMaster=auto -o ControlPath=$tmpDir/ssh-%n -o ControlPersist=60"
|
||
|
||
# First build Nix, since NixOS may require a newer version than the
|
||
# current one.
|
||
if [[ -n "$rollback" || "$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 [[ "$machine" =~ i.86 ]]; then
|
||
echo @nix_i686_linux@
|
||
elif [[ "$machine" = aarch64 ]]; then
|
||
echo @nix_aarch64_linux@
|
||
else
|
||
log "$0: unsupported platform"
|
||
exit 1
|
||
fi
|
||
}
|
||
|
||
if [[ -n $buildNix && -z $flake ]]; then
|
||
log "building Nix..."
|
||
nixDrv=
|
||
if ! nixDrv="$(runCmd nix-instantiate '<nixpkgs/nixos>' --add-root "$tmpDir/nix.drv" --indirect -A config.nix.package.out "${extraBuildFlags[@]}")"; then
|
||
if ! nixDrv="$(runCmd nix-instantiate '<nixpkgs>' --add-root "$tmpDir/nix.drv" --indirect -A nix "${extraBuildFlags[@]}")"; then
|
||
if ! nixStorePath="$(runCmd 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 ! runCmd nix-store -r "$nixStorePath" --add-root "${tmpDir}/nix" --indirect \
|
||
--option extra-binary-caches https://cache.nixos.org/; then
|
||
log "warning: don't know how to get latest Nix"
|
||
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="$(runCmd prebuiltNix "$(buildHostCmd uname -m)")"
|
||
remoteNix="$remoteNixStorePath/bin"
|
||
if ! buildHostCmd nix-store -r "$remoteNixStorePath" \
|
||
--option extra-binary-caches https://cache.nixos.org/ >/dev/null; then
|
||
remoteNix=
|
||
log "warning: don't know how to get latest Nix"
|
||
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 "${copyClosureFlags[@]}" --to "$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 && -z $flake ]]; then
|
||
if nixpkgs=$(runCmd nix-instantiate --find-file nixpkgs "${extraBuildFlags[@]}"); then
|
||
suffix=$(runCmd $SHELL "$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
|
||
log "building the system configuration..."
|
||
if [[ "$action" = switch || "$action" = boot ]]; then
|
||
if [[ -z $flake ]]; then
|
||
pathToConfig="$(nixBuild '<nixpkgs/nixos>' --no-out-link -A system "${extraBuildFlags[@]}")"
|
||
else
|
||
pathToConfig="$(nixFlakeBuild "$flake#$flakeAttr.config.system.build.toplevel" "${extraBuildFlags[@]}" "${lockFlags[@]}")"
|
||
fi
|
||
copyToTarget "$pathToConfig"
|
||
targetHostCmd nix-env -p "$profile" --set "$pathToConfig"
|
||
elif [[ "$action" = test || "$action" = build || "$action" = dry-build || "$action" = dry-activate ]]; then
|
||
if [[ -z $flake ]]; then
|
||
pathToConfig="$(nixBuild '<nixpkgs/nixos>' -A system -k "${extraBuildFlags[@]}")"
|
||
else
|
||
pathToConfig="$(nixFlakeBuild "$flake#$flakeAttr.config.system.build.toplevel" "${extraBuildFlags[@]}" "${lockFlags[@]}")"
|
||
fi
|
||
elif [ "$action" = build-vm ]; then
|
||
if [[ -z $flake ]]; then
|
||
pathToConfig="$(nixBuild '<nixpkgs/nixos>' -A vm -k "${extraBuildFlags[@]}")"
|
||
else
|
||
pathToConfig="$(nixFlakeBuild "$flake#$flakeAttr.config.system.build.vm" "${extraBuildFlags[@]}" "${lockFlags[@]}")"
|
||
fi
|
||
elif [ "$action" = build-vm-with-bootloader ]; then
|
||
if [[ -z $flake ]]; then
|
||
pathToConfig="$(nixBuild '<nixpkgs/nixos>' -A vmWithBootLoader -k "${extraBuildFlags[@]}")"
|
||
else
|
||
pathToConfig="$(nixFlakeBuild "$flake#$flakeAttr.config.system.build.vmWithBootLoader" "${extraBuildFlags[@]}" "${lockFlags[@]}")"
|
||
fi
|
||
else
|
||
showSyntax
|
||
fi
|
||
# Copy build to target host if we haven't already done it
|
||
if ! [[ "$action" = switch || "$action" = boot ]]; then
|
||
copyToTarget "$pathToConfig"
|
||
fi
|
||
else # [ -n "$rollback" ]
|
||
if [[ "$action" = switch || "$action" = boot ]]; then
|
||
targetHostCmd nix-env --rollback -p "$profile"
|
||
pathToConfig="$profile"
|
||
elif [[ "$action" = test || "$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 [[ "$action" = switch || "$action" = boot || "$action" = test || "$action" = dry-activate ]]; then
|
||
if [[ -z "$specialisation" ]]; then
|
||
cmd="$pathToConfig/bin/switch-to-configuration"
|
||
else
|
||
cmd="$pathToConfig/specialisation/$specialisation/bin/switch-to-configuration"
|
||
|
||
if [[ ! -f "$cmd" ]]; then
|
||
log "error: specialisation not found: $specialisation"
|
||
exit 1
|
||
fi
|
||
fi
|
||
|
||
if ! targetHostCmd "$cmd" "$action"; then
|
||
log "warning: error(s) occurred while switching to the new configuration"
|
||
exit 1
|
||
fi
|
||
fi
|
||
|
||
|
||
if [[ "$action" = build-vm || "$action" = build-vm-with-bootloader ]]; then
|
||
cat >&2 <<EOF
|
||
|
||
Done. The virtual machine can be started by running $(echo "${pathToConfig}/bin/"run-*-vm)
|
||
EOF
|
||
fi
|