snowfall-lib/lib/package/default.nix
2023-01-09 05:22:28 -08:00

46 lines
1.6 KiB
Nix

{ core-inputs
, user-inputs
, snowfall-lib
}:
let
inherit (core-inputs.flake-utils-plus.lib) filterPackages;
inherit (core-inputs.nixpkgs.lib) assertMsg foldl mapAttrs;
user-packages-root = snowfall-lib.fs.get-snowfall-file "packages";
in
{
package = {
# Create flake output packages.
# Type: Attrs -> Attrs
# Usage: create-packages { inherit channels; src = ./my-packages; overrides = { inherit another-package; }; alias.default = "another-package"; }
# result: { another-package = ...; my-package = ...; default = ...; }
create-packages =
{ channels
, src ? user-packages-root
, pkgs ? channels.nixpkgs
, overrides ? { }
, alias ? { }
}:
let
user-packages = snowfall-lib.fs.get-default-nix-files-recursive src;
create-package-metadata = package: {
name = builtins.unsafeDiscardStringContext (snowfall-lib.path.get-parent-directory package);
drv = pkgs.callPackage package {
inherit channels;
lib = snowfall-lib.internal.system-lib;
inputs = snowfall-lib.flake.without-src user-inputs;
};
};
packages-metadata = builtins.map create-package-metadata user-packages;
merge-packages = packages: metadata:
packages // {
${metadata.name} = metadata.drv;
};
packages-without-aliases = foldl merge-packages { } packages-metadata;
aliased-packages = mapAttrs (name: value: packages-without-aliases.${value}) alias;
packages = packages-without-aliases // aliased-packages // overrides;
in
filterPackages pkgs.system packages;
};
}