tvl-depot/third_party/nixpkgs/default.nix
sterni ad4bfeceed chore(3p): bump NixOS channels to 2022-01-02
Change-Id: Ie6882b17380388e20c8d1e9406279c96283b936f
Reviewed-on: https://cl.tvl.fyi/c/depot/+/4757
Tested-by: BuildkiteCI
Reviewed-by: grfn <grfn@gws.fyi>
2022-01-03 09:55:54 +00:00

77 lines
2.5 KiB
Nix

# This file imports the pinned nixpkgs sets and applies relevant
# modifications, such as our overlays.
#
# Note that the attribute exposed by this (third_party.nixpkgs) is
# "special" in that the fixpoint used as readTree's config parameter
# in //default.nix passes this attribute as the `pkgs` argument to all
# readTree derivations.
{ depot, externalArgs, ... }:
let
# This provides the sources of nixpkgs. We track both
# nixos-unstable, and the current stable channel of the latest NixOS
# release.
# Tracking nixos-unstable as of 2022-01-02.
unstableHashes = {
commit = "59bfda72480496f32787cec8c557182738b1bd3f";
sha256 = "18akd1chfvniq1q774rigfxgmxwi0wyjljpa1j9ls59szpzr316d";
};
# Tracking nixos-21.11 as of 2022-01-02.
stableHashes = {
commit = "d1e59cfc49961e121583abe32e2f3db1550fbcff";
sha256 = "03ldf1dlxqf3g8qh9x5vp6vd9zvvr481fyjds111imll69y60wpm";
};
# import the nixos-unstable package set, or optionally use the
# source (e.g. a path) specified by the `nixpkgsBisectPath`
# argument. This is intended for use-cases where the depot is
# bisected against nixpkgs to find the root cause of an issue in a
# channel bump.
nixpkgsSrc = externalArgs.nixpkgsBisectPath or (fetchTarball {
url = "https://github.com/NixOS/nixpkgs/archive/${unstableHashes.commit}.tar.gz";
sha256 = unstableHashes.sha256;
});
stableNixpkgsSrc = fetchTarball {
url = "https://github.com/NixOS/nixpkgs/archive/${stableHashes.commit}.tar.gz";
sha256 = stableHashes.sha256;
};
# Stable package set is imported, but not exposed, to overlay
# required packages into the unstable set.
stableNixpkgs = import stableNixpkgsSrc {};
# Overlay for packages that should come from the stable channel
# instead (e.g. because something is broken in unstable).
stableOverlay = self: super: {
# Nothing picked from stable presently.
};
# Overlay to expose the nixpkgs commits we are using to other Nix code.
commitsOverlay = _: _: {
nixpkgsCommits = {
unstable = unstableHashes.commit;
stable = stableHashes.commit;
};
};
in import nixpkgsSrc {
# allow users to inject their config into builds (e.g. to test CA derivations)
config =
(if externalArgs ? nixpkgsConfig then externalArgs.nixpkgsConfig else { })
// {
allowUnfree = true;
allowBroken = true;
};
overlays = [
commitsOverlay
stableOverlay
depot.third_party.overlays.haskell
depot.third_party.overlays.emacs
depot.third_party.overlays.tvl
depot.third_party.overlays.ecl-static
];
}