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feat: upgrade overlays to support merging namespaces

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This commit is contained in:
Jake Hamilton
2022-10-11 01:08:13 -07:00
parent 8141ee43d8
commit 2bc7d5fab3
5 changed files with 251 additions and 110 deletions
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47
lib/flake/default.nix
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@@ -78,9 +78,10 @@ rec {
modules = snowfall-lib.module.create-modules {
overrides = (full-flake-options.modules or { });
};
overlays = core-inputs.flake-utils-plus.lib.exportOverlays ({
inherit (user-inputs.self) pkgs inputs;
});
overlays = snowfall-lib.overlay.create-overlays {
overlay-package-namespace = full-flake-options.overlay-package-namespace or null;
extra-overlays = full-flake-options.extra-exported-overlays or { };
};
outputs-builder = channels:
let
@@ -107,7 +108,7 @@ rec {
snowfall-lib.attrs.merge-deep [ user-outputs outputs ];
flake-options = custom-flake-options // {
inherit hosts templates overlays;
inherit hosts templates;
inherit (user-inputs) self;
lib = snowfall-lib.internal.user-lib;
@@ -117,7 +118,7 @@ rec {
channelsConfig = full-flake-options.channels-config or { };
channels.nixpkgs.overlaysBuilder = snowfall-lib.overlay.create-overlays {
channels.nixpkgs.overlaysBuilder = snowfall-lib.overlay.create-overlays-builder {
overlay-package-namespace = full-flake-options.overlay-package-namespace or null;
extra-overlays = full-flake-options.overlays or [ ];
};
@@ -125,36 +126,14 @@ rec {
outputsBuilder = outputs-builder;
};
flake-outputs =
flake-utils-plus-outputs =
core-inputs.flake-utils-plus.lib.mkFlake flake-options;
overlay = (final: prev:
let
overlay-package-namespace = full-flake-options.overlay-package-namespace or null;
user-overlay-packages =
(builtins.map (overlay: overlay final prev) (builtins.attrValues flake-outputs.overlays));
namespaced-user-overlay-packages =
foldl
(namespaced-user-overlay-packages: user-overlay-package:
namespaced-user-overlay-packages // user-overlay-package.${overlay-package-namespace}
)
{ }
user-overlay-packages;
merged-user-overlay-packages =
if overlay-package-namespace == null then
snowfall-lib.attrs.merge-shallow
user-overlay-packages
else
{
${overlay-package-namespace} =
(prev.${overlay-package-namespace} or { })
// namespaced-user-overlay-packages;
};
in
merged-user-overlay-packages
);
flake-outputs =
flake-utils-plus-outputs // {
inherit overlays;
overlay = overlays.default;
};
in
flake-outputs // {
inherit overlay;
};
flake-outputs;
}