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Add --rollback option to nixos-rebuild.

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svn path=/nixos/trunk/; revision=16771
This commit is contained in:
Nicolas Pierron 2009-08-19 15:04:19 +00:00
parent ce030d6c35
commit 923f58794a
1 changed files with 37 additions and 11 deletions
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48
modules/installer/tools/nixos-rebuild.sh
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@ -31,6 +31,8 @@ Options:
channel manifest channel manifest
--no-build-nix don't build the latest Nix from Nixpkgs before --no-build-nix don't build the latest Nix from Nixpkgs before
building NixOS building NixOS
--rollback restore the previous NixOS configuration (only
with switch, boot, test, build)
Various nix-build options are also accepted, in particular: Various nix-build options are also accepted, in particular:
@ -51,6 +53,7 @@ extraBuildFlags=
action= action=
pullManifest=1 pullManifest=1
buildNix=1 buildNix=1
rollback=
while test "$#" -gt 0; do while test "$#" -gt 0; do
i="$1"; shift 1 i="$1"; shift 1
@ -65,6 +68,8 @@ while test "$#" -gt 0; do
pullManifest= pullManifest=
elif test "$i" = --no-build-nix; then elif test "$i" = --no-build-nix; then
buildNix= buildNix=
elif test "$i" = --rollback; then
rollback=1
elif test "$i" = --show-trace -o "$i" = --no-build-hook -o "$i" = --keep-failed -o "$i" = -K \ elif test "$i" = --show-trace -o "$i" = --no-build-hook -o "$i" = --keep-failed -o "$i" = -K \
-o "$i" = --keep-going -o "$i" = -k -o "$i" = --verbose -o "$i" = -v; then -o "$i" = --keep-going -o "$i" = -k -o "$i" = --verbose -o "$i" = -v; then
extraBuildFlags="$extraBuildFlags $i" extraBuildFlags="$extraBuildFlags $i"
@ -83,6 +88,11 @@ if test "$action" = dry-run; then
extraBuildFlags="$extraBuildFlags --dry-run" extraBuildFlags="$extraBuildFlags --dry-run"
fi fi
if test -n "$rollback"; then
pullManifest=
buildNix=
fi
tmpDir=$(mktemp -t -d nixos-rebuild.XXXXXX) tmpDir=$(mktemp -t -d nixos-rebuild.XXXXXX)
trap 'rm -rf "$tmpDir"' EXIT trap 'rm -rf "$tmpDir"' EXIT
@ -126,17 +136,33 @@ fi
# Either upgrade the configuration in the system profile (for "switch" # Either upgrade the configuration in the system profile (for "switch"
# or "boot"), or just build it and create a symlink "result" in the # or "boot"), or just build it and create a symlink "result" in the
# current directory (for "build" and "test"). # current directory (for "build" and "test").
if test "$action" = switch -o "$action" = boot; then if test -z "$rollback"; then
nix-env -p /nix/var/nix/profiles/system -f $NIXOS --set -A system $extraBuildFlags if test "$action" = switch -o "$action" = boot; then
pathToConfig=/nix/var/nix/profiles/system nix-env -p /nix/var/nix/profiles/system -f $NIXOS --set -A system $extraBuildFlags
elif test "$action" = test -o "$action" = build -o "$action" = dry-run; then pathToConfig=/nix/var/nix/profiles/system
nix-build $NIXOS -A system -K -k $extraBuildFlags elif test "$action" = test -o "$action" = build -o "$action" = dry-run; then
pathToConfig=./result nix-build $NIXOS -A system -K -k $extraBuildFlags
elif test "$action" = build-vm; then pathToConfig=./result
nix-build $NIXOS -A vm -K -k $extraBuildFlags elif test "$action" = build-vm; then
pathToConfig=./result nix-build $NIXOS -A vm -K -k $extraBuildFlags
else pathToConfig=./result
showSyntax else
showSyntax
fi
else # test -n "$rollback"
if test "$action" = switch -o "$action" = boot; then
nix-env --rollback -p /nix/var/nix/profiles/system
pathToConfig=/nix/var/nix/profiles/system
elif test "$action" = test -o "$action" = build; then
systemNumber=$(
nix-env -p /nix/var/nix/profiles/system --list-generations |
sed -n '/current/ {g; p;}; s/ *\([0-9]*\).*/\1/; h'
)
ln -sT /nix/var/nix/profiles/system-${systemNumber}-link ./result
pathToConfig=./result
else
showSyntax
fi
fi fi