a73714a93c
This adds a first crack at one idea for a generic, non-user-specific rebuild-system script to ops.nixos.rebuild-system. The idea here is that we enumerate all the nixos systems stored in the monorepo (similarly to what we do for ci-builds right now) then search through them by hostname to find the one matching the hostname of the current system, which is an attempt at a more generic version of tazjin's rebuilder script which does the same thing but with an explicit case block. As a caveat, it feels like there's a slight possibility that this way of finding systems is going to get slow to evaluate - on my system it feels fine but if it grows out of hand it's probably feasible to just bake this into the built script as a dynamically generated case statement. Change-Id: I2e4c5401913b6f4d936ab48ba2f95f96e0e78eb4 Reviewed-on: https://cl.tvl.fyi/c/depot/+/894 Tested-by: BuildkiteCI Reviewed-by: lukegb <lukegb@tvl.fyi>
45 lines
1.2 KiB
Nix
45 lines
1.2 KiB
Nix
# Most of the Nix expressions in this folder are NixOS modules, which
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# are not readTree compatible.
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#
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# Some things (such as system configurations) are, and we import them
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# here manually.
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#
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# TODO(tazjin): Find a more elegant solution for the whole module
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# situation.
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{ lib, pkgs, depot, ... }@args:
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let
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inherit (lib) findFirst isAttrs;
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in
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rec {
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whitby = import ./whitby/default.nix args;
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# System installation
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allSystems = import ./all-systems.nix args;
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nixosFor = configuration: depot.third_party.nixos {
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inherit configuration;
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};
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findSystem = hostname:
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(findFirst
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(system: system.config.networking.hostName == hostname)
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(throw "${hostname} is not a known NixOS host")
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(map nixosFor allSystems));
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rebuild-system = pkgs.writeShellScriptBin "rebuild-system" ''
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set -ue
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if [[ $EUID -ne 0 ]]; then
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echo "Oh no! Only root is allowed to rebuild the system!" >&2
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exit 1
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fi
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echo "Rebuilding NixOS for $HOSTNAME"
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system=$(nix-build -E "((import ${toString depot.depotPath} {}).ops.nixos.findSystem \"$HOSTNAME\").system" --no-out-link --show-trace)
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nix-env -p /nix/var/nix/profiles/system --set $system
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$system/bin/switch-to-configuration switch
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'';
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}
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