14d1ba8311
This change is required for using our package set in exported josh workspaces. It has no functional impact on depot itself. Change-Id: Id48b40f067b5d53a2b7386a0ba1146a72268b923 Reviewed-on: https://cl.tvl.fyi/c/depot/+/4990 Tested-by: BuildkiteCI Reviewed-by: sterni <sternenseemann@systemli.org>
79 lines
2.6 KiB
Nix
79 lines
2.6 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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# 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 ? {}, externalArgs ? {}, depotOverlays ? true, ... }:
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let
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# This provides the sources of nixpkgs. We track both
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# nixos-unstable, and the current stable channel of the latest NixOS
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# release.
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# Tracking nixos-unstable as of 2022-01-15.
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unstableHashes = {
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commit = "5aaed40d22f0d9376330b6fa413223435ad6fee5";
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sha256 = "0bs8sr92lzz7mdrlv143draq3j7l42dj69w3px1x31qcr3n5pgcv";
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};
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# Tracking nixos-21.11 as of 2022-01-16.
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stableHashes = {
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commit = "3ddd960a3b575bf3230d0e59f42614b71f9e0db9";
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sha256 = "1sk60h584gfdf5ql3mv4hps6jly6yj6dc5fbkfkh082z1c8885vk";
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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 (fetchTarball {
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url = "https://github.com/NixOS/nixpkgs/archive/${unstableHashes.commit}.tar.gz";
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sha256 = unstableHashes.sha256;
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});
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stableNixpkgsSrc = fetchTarball {
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url = "https://github.com/NixOS/nixpkgs/archive/${stableHashes.commit}.tar.gz";
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sha256 = stableHashes.sha256;
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};
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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 stableNixpkgsSrc {};
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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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stableOverlay = self: super: {
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# Nothing picked from stable presently.
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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 = unstableHashes.commit;
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stable = stableHashes.commit;
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};
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};
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in import nixpkgsSrc {
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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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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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] else []);
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}
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