79 lines
2.2 KiB
Bash
79 lines
2.2 KiB
Bash
# Handle arguments
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self="$1"
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verb="$2"
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shift
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shift
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# Helpers
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error() {
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echo -e '\033[1;31m'"$*"'\033[0m'
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}
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warn() {
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echo -e '\033[1;33m'"$*"'\033[0m'
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}
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info() {
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echo -e '\033[1;34m'"$*"'\033[0m'
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}
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debug() {
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[ ! -v DEBUG ] || echo -e '\033[1;35m'"$*"'\033[0m'
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}
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if [ "$verb" != "build" ] && [ "$verb" != "test" ] && [ "$verb" != "boot" ] && [ "$verb" != "switch" ] && [ "$verb" != "confirm" ]
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then
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error "Action should be one of: build, test, boot, switch, confirm"
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exit 2
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fi
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info "Evaluating"
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# Evaluating can take a lot of memory, and Nix doesn't free it until the program ends,
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# which can be limiting on memory-constrained devices. Hence the build step is separate.
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# nix eval doesn't use the eval cache, so we do a nix build --dry-run
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# sudo so the eval cache is shared with nixos-rebuild
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json=$(time sudo nix build "$self#nixosConfigurations.$HOSTNAME.config.system.build.toplevel" --dry-run --json )
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toplevel=$(echo "$json" | jq '.[0].outputs.out' -r)
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derivation=$(echo "$json" | jq '.[0].drvPath' -r)
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info "Building"
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sudo nom build "$derivation^*" --no-link "$@"
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info "Showing diff"
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nvd diff "$(readlink -f /nix/var/nix/profiles/system)" "$toplevel"
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# Figure out specialisation
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specialisationArgs=()
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currentSystem="$(readlink -f /run/current-system)"
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while read -r specialisation
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do
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if [ "$(readlink -f "/nix/var/nix/profiles/system/specialisation/$specialisation")" = "$currentSystem" ]
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then
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debug "Using specialisation: $specialisation"
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specialisationArgs=("--specialisation" "$specialisation")
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fi
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done <<< "$(ls /nix/var/nix/profiles/system/specialisation)"
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# Apply
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confirm="n"
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if [ "$verb" = "confirm" ]
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then
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warning "Apply configuration? [y/N]"
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read -r confirm
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fi
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if [ "$verb" = "test" ] || [ "$verb" = "switch" ] || [ "$confirm" = "y" ]
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then
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info "Applying"
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"$toplevel/bin/update-password-store"
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sudo nixos-rebuild --flake "$self#$HOSTNAME" test "${specialisationArgs[@]}" "$@"
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fi
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# Set as boot
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if [ "$verb" = "confirm" ]
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then
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warning "Set configuration as boot? [y/N]"
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read -r confirm
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fi
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if [ "$verb" = "boot" ] || [ "$verb" = "switch" ] || [ "$confirm" = "y" ]
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then
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info "Setting as boot"
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sudo nixos-rebuild --flake "$self#$HOSTNAME" boot "$@"
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fi
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