ark/lib/devos/mkProfileAttrs.nix
2021-04-18 19:28:03 -05:00

36 lines
767 B
Nix

{ lib, ... }:
let mkProfileAttrs =
/**
Synopsis: mkProfileAttrs _path_
Recursively collect the subdirs of _path_ containing a default.nix into attrs.
This sets a contract, eliminating ambiguity for _default.nix_ living under the
profile directory.
Example:
let profiles = mkProfileAttrs ./profiles; in
assert profiles ? core.default; 0
**/
dir:
let
imports =
let
files = lib.safeReadDir dir;
p = n: v:
v == "directory"
&& n != "profiles";
in
lib.filterAttrs p files;
f = n: _:
lib.optionalAttrs
(lib.pathExists "${dir}/${n}/default.nix")
{ default = "${dir}/${n}"; }
// mkProfileAttrs "${dir}/${n}";
in
lib.mapAttrs f imports;
in mkProfileAttrs