350d60ea8e
cl/5832 added a global system parameter to depot which allowed specifying what `system` should be used for nixpkgs and all depot derivations (assuming a native compilation case) which was implemented in cl/5846. This allows instantiating derivations for a different system than whatever builtins.currentSystem happens to be. This is useful for debugging, allows you to schedule builds on build servers for other platforms or build for architectures that are a subset of the one you are running (e.g. i686-linux). This change eliminates all remaining uses of builtins.currentSystem which could lead to an inconsistent combination of `system` values when passing `localSystem`. Change-Id: I0f824f4f0afa88ef1ddd9a8cecb24bf94bacde7a Reviewed-on: https://cl.tvl.fyi/c/depot/+/7260 Tested-by: BuildkiteCI Reviewed-by: tazjin <tazjin@tvl.su> Autosubmit: sterni <sternenseemann@systemli.org>
56 lines
1.8 KiB
Nix
56 lines
1.8 KiB
Nix
# This file defines the root of all external dependency imports (i.e.
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# third-party code) in the TVL package tree.
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#
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# There are two categories of third-party programs:
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#
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# 1) Programs in nixpkgs, the NixOS package set. For these, you might
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# want to look at //third_party/nixpkgs (for the package set
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# imports) and //third_party/overlays (for modifications in these
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# imported package sets).
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#
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# 2) Third-party software packaged in this repository. This is all
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# other folders below //third_party, other than the ones mentioned
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# above.
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{ pkgs, depot, localSystem, ... }:
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{
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# Expose a partially applied NixOS, expecting an attribute set with
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# a `configuration` key. Exposing it like this makes it possible to
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# modify some of the base configuration used by NixOS.
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#
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# This partially reimplements the code in
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# <nixpkgs/nixos/default.nix> as we need to modify its internals to
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# be able to pass `specialArgs`. We depend on this because `depot`
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# needs to be partially evaluated in NixOS configuration before
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# module imports are resolved.
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nixos =
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{ configuration
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, specialArgs ? { }
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, system ? localSystem
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, ...
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}:
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let
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eval = import (pkgs.path + "/nixos/lib/eval-config.nix") {
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inherit specialArgs system;
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modules = [
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configuration
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(import (depot.path.origSrc + "/ops/modules/default-imports.nix"))
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];
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};
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# This is for `nixos-rebuild build-vm'.
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vmConfig = (import (pkgs.path + "/nixos/lib/eval-config.nix") {
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inherit specialArgs system;
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modules = [
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configuration
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(pkgs.path + "/nixos/modules/virtualisation/qemu-vm.nix")
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];
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}).config;
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in
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{
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inherit (eval) pkgs config options;
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system = eval.config.system.build.toplevel;
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vm = vmConfig.system.build.vm;
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};
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}
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