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|
{ inputs
, systems
, nixpkgs ? inputs.nixpkgs
, ...
}:
let
inherit (builtins)
match
head
readDir
;
inherit (nixpkgs.lib)
callPackageWith
filterAttrs
genAttrs
makeScope
mapAttrs
mapAttrs'
;
importDir =
path:
let
entries = readDir path;
# Get paths to directories
onlyDirs = filterAttrs (_name: type: type == "directory") entries;
dirPaths = mapAttrs
(name: type: {
path = path + "/${name}";
inherit type;
})
onlyDirs;
# Get paths to nix files, where the name is the basename of the file without the .nix extension
nixPaths = removeAttrs
(mapAttrs'
(
name: type:
let
nixName = match "(.*)\\.nix" name;
in
{
name = if type == "directory" || nixName == null then "__junk" else (head nixName);
value = {
path = path + "/${name}";
type = type;
};
}
)
entries) [ "__junk" ];
in
dirPaths // nixPaths;
# Memoize the args per system
systemArgs = genAttrs systems (
system:
let
# Resolve the packages for each input.
perSystem = mapAttrs
(_: flake: flake.legacyPackages.${system} or { } // flake.packages.${system} or { })
inputs;
# Handle nixpkgs specially.
pkgs =
if (nixpkgs.config or { }) == { } && (nixpkgs.overlays or [ ]) == [ ] then
perSystem.nixpkgs
else
import inputs.nixpkgs {
inherit system;
config = nixpkgs.config or { };
overlays = nixpkgs.overlays or [ ];
};
flake = inputs.self;
in
makeScope callPackageWith (_: { inherit inputs perSystem flake pkgs system; })
);
eachSystem = f: genAttrs systems (system: f systemArgs.${system});
in
{ inherit importDir systemArgs eachSystem; }
|
