snowfall-lib/snowfall-lib/package/default.nix

73 lines
2.2 KiB
Nix

{
core-inputs,
user-inputs,
snowfall-lib,
snowfall-config,
}: let
inherit (core-inputs.flake-utils-plus.lib) filterPackages allSystems;
inherit (core-inputs.nixpkgs.lib) assertMsg foldl mapAttrs filterAttrs callPackageWith;
user-packages-root = snowfall-lib.fs.get-snowfall-file "packages";
in {
package = rec {
## Create flake output packages.
## Example Usage:
## ```nix
## create-packages { inherit channels; src = ./my-packages; overrides = { inherit another-package; }; alias.default = "another-package"; }
## ```
## Result:
## ```nix
## { another-package = ...; my-package = ...; default = ...; }
## ```
#@ Attrs -> Attrs
create-packages = {
channels,
src ? user-packages-root,
pkgs ? channels.nixpkgs,
overrides ? {},
alias ? {},
namespace ? snowfall-config.namespace,
}: let
user-packages = snowfall-lib.fs.get-default-nix-files-recursive src;
create-package-metadata = package: let
namespaced-packages = {
${namespace} = packages-without-aliases;
};
extra-inputs =
pkgs
// namespaced-packages
// {
inherit channels namespace;
lib = snowfall-lib.internal.system-lib;
pkgs = pkgs // namespaced-packages;
inputs = user-inputs;
};
in {
name = builtins.unsafeDiscardStringContext (snowfall-lib.path.get-parent-directory package);
drv = let
pkg = callPackageWith extra-inputs package {};
in
pkg
// {
meta =
(pkg.meta or {})
// {
snowfall = {
path = package;
};
};
};
};
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;
};
}