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/*
Parse an emacs package file to derive packages from
Package-Requires declarations.
*/
{ pkgs }:
let
parse = pkgs.callPackage ./parse.nix { };
in
{ packageElisp
, extraEmacsPackages ? epkgs: [ ]
, package ? pkgs.emacs
, override ? (epkgs: epkgs)
}:
let
packages = parse.parsePackagesFromPackageRequires packageElisp;
emacsPackages = pkgs.emacsPackagesGen package;
emacsWithPackages = emacsPackages.emacsWithPackages;
in
emacsWithPackages (epkgs:
let
overriden = override epkgs;
usePkgs = builtins.map (name: overriden.${name}) packages;
extraPkgs = extraEmacsPackages overriden;
in
[ overriden.use-package ] ++ usePkgs ++ extraPkgs)
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