9c78e5a490
Of course we can't pass the overlays without causing an infinite recursion, but they are also intended purely for unstable nixpkgs, so it doesn't matter. Change-Id: I0e1b42e37ad12872f9420cf59dff6d944b2bc5d3 Reviewed-on: https://cl.tvl.fyi/c/depot/+/5847 Autosubmit: sterni <sternenseemann@systemli.org> Tested-by: BuildkiteCI Reviewed-by: tazjin <tazjin@tvl.su>
72 lines
2.4 KiB
Nix
72 lines
2.4 KiB
Nix
# This file imports the pinned nixpkgs sets and applies relevant
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# modifications, such as our overlays.
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#
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# The actual source pinning happens via niv in //third_party/sources
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#
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# Note that the attribute exposed by this (third_party.nixpkgs) is
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# "special" in that the fixpoint used as readTree's config parameter
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# in //default.nix passes this attribute as the `pkgs` argument to all
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# readTree derivations.
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{ depot ? { }
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, externalArgs ? { }
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, depotOverlays ? true
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, localSystem ? builtins.currentSystem
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, ...
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}:
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let
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# Arguments passed to both the stable nixpkgs and the main, unstable one.
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# Includes everything but overlays which are only passed to unstable nixpkgs.
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commonNixpkgsArgs = {
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# allow users to inject their config into builds (e.g. to test CA derivations)
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config =
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(if externalArgs ? nixpkgsConfig then externalArgs.nixpkgsConfig else { })
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// {
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allowUnfree = true;
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allowBroken = true;
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};
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inherit localSystem;
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};
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# import the nixos-unstable package set, or optionally use the
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# source (e.g. a path) specified by the `nixpkgsBisectPath`
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# argument. This is intended for use-cases where the depot is
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# bisected against nixpkgs to find the root cause of an issue in a
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# channel bump.
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nixpkgsSrc = externalArgs.nixpkgsBisectPath or depot.third_party.sources.nixpkgs;
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# Stable package set is imported, but not exposed, to overlay
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# required packages into the unstable set.
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stableNixpkgs = import depot.third_party.sources.nixpkgs-stable commonNixpkgsArgs;
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# Overlay for packages that should come from the stable channel
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# instead (e.g. because something is broken in unstable).
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# Use `stableNixpkgs` from above.
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stableOverlay = _unstableSelf: _unstableSuper: {
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# bat syntaxes changed with syntect 5.0, but cheddar is still on 4.x
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# TODO(tazjin): upgrade cheddar to syntect 5.0
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bat = stableNixpkgs.bat;
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};
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# Overlay to expose the nixpkgs commits we are using to other Nix code.
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commitsOverlay = _: _: {
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nixpkgsCommits = {
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unstable = depot.third_party.sources.nixpkgs.rev;
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stable = depot.third_party.sources.nixpkgs-stable.rev;
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};
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};
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in
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import nixpkgsSrc (commonNixpkgsArgs // {
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overlays = [
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commitsOverlay
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stableOverlay
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] ++ (if depotOverlays then [
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depot.third_party.overlays.haskell
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depot.third_party.overlays.emacs
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depot.third_party.overlays.tvl
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depot.third_party.overlays.ecl-static
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depot.third_party.overlays.dhall
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] else [ ]);
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})
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