nixos-rebuild: Add a convenience option ‘--upgrade’
This is equivalent to running ‘nix-channel --update nixos’ before running ‘nixos-rebuild’.
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@ -28,6 +28,7 @@
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<arg choice='plain'><option>pull</option></arg>
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</group>
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<sbr />
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<arg><option>--upgrade</option></arg>
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<arg><option>--install-grub</option></arg>
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<arg><option>--no-pull</option></arg>
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<arg><option>--no-build-nix</option></arg>
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@ -195,6 +196,14 @@ $ ./result/bin/run-*-vm
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<variablelist>
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<varlistentry>
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<term><option>--upgrade</option></term>
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<listitem>
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<para>Fetch the latest version of NixOS from the NixOS
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channel.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><option>--install-grub</option></term>
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<listitem>
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@ -22,6 +22,7 @@ The operation is one of the following:
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Options:
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--upgrade fetch the latest version of NixOS before rebuilding
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--install-grub (re-)install the Grub bootloader
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--pull do a nix-pull to get the latest NixOS channel
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manifest
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@ -51,43 +52,47 @@ action=
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pullManifest=
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buildNix=1
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rollback=
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upgrade=
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while test "$#" -gt 0; do
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i="$1"; shift 1
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case "$i" in
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--help)
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showSyntax
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;;
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;;
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switch|boot|test|build|dry-run|build-vm|build-vm-with-bootloader|pull)
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action="$i"
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;;
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;;
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--install-grub)
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export NIXOS_INSTALL_GRUB=1
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;;
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;;
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--pull)
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pullManifest=1
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;;
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;;
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--no-build-nix)
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buildNix=
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;;
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;;
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--rollback)
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rollback=1
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;;
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;;
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--upgrade)
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upgrade=1
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;;
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--show-trace|--no-build-hook|--keep-failed|-K|--keep-going|-k|--verbose|-v|--fallback)
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extraBuildFlags="$extraBuildFlags $i"
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;;
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;;
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--max-jobs|-j|--cores|-I)
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j="$1"; shift 1
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extraBuildFlags="$extraBuildFlags $i $j"
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;;
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;;
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--fast)
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buildNix=
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extraBuildFlags="$extraBuildFlags --show-trace"
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;;
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;;
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*)
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echo "$0: unknown option \`$i'"
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exit 1
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;;
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;;
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esac
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done
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@ -132,10 +137,16 @@ fi
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if [ "$action" = pull ]; then exit 0; fi
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# If ‘--upgrade’ is given, run ‘nix-channel --update nixos’.
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if [ -n "$upgrade" ]; then
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nix-channel --update nixos
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fi
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# First build Nix, since NixOS may require a newer version than the
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# current one. Of course, the same goes for Nixpkgs, but Nixpkgs is
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# more conservative.
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if test -n "$buildNix"; then
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if [ -n "$buildNix" ]; then
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echo "building Nix..." >&2
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if ! nix-build '<nixos>' -A config.environment.nix -o $tmpDir/nix $extraBuildFlags > /dev/null; then
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if ! nix-build '<nixos>' -A nixFallback -o $tmpDir/nix $extraBuildFlags > /dev/null; then
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