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feat: aliases and custom snowfall root

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Jake Hamilton 2023-01-09 05:22:28 -08:00
parent d8a08681a9
commit cbe1b6e0fb
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9 changed files with 126 additions and 85 deletions
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22
lib/package/default.nix
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@ -5,21 +5,22 @@
let
inherit (core-inputs.flake-utils-plus.lib) filterPackages;
inherit (core-inputs.nixpkgs.lib) assertMsg foldl;
inherit (core-inputs.nixpkgs.lib) assertMsg foldl mapAttrs;
user-packages-root = snowfall-lib.fs.get-file "packages";
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; default = "my-package"; }; }
# 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;
@ -36,18 +37,9 @@ in
packages // {
${metadata.name} = metadata.drv;
};
packages-without-default = foldl merge-packages { } packages-metadata;
default-package =
if overrides.default or null == null then
{ }
else if builtins.isAttrs overrides.default then
{ default = overrides.default; }
else if packages-without-default.${overrides.default} or null != null then
{ default = packages-without-default.${overrides.default}; }
else
{ };
overrides-without-default = builtins.removeAttrs overrides [ "default" ];
packages = packages-without-default // default-package // overrides-without-default;
packages-without-aliases = foldl merge-packages { } packages-metadata;
aliased-packages = mapAttrs (name: value: packages-without-aliases.${value}) alias;
packages = packages-without-aliases // aliased-packages // overrides;
in
filterPackages pkgs.system packages;
};