devos/pkgs/flake.nix
Timothy DeHerrera d51cd34fb7
subflakes: make first class citizens
Subflakes should provide their wares as outputs, so wire up the pkgs
flake to reflect that.

Due to the unstable nature of flakes, updating the root flake doesn't
currently update the subflake lock file. Therefore, add additional
logic to flk update script in order to do this behind the scenes.

Nix is now pulled in from the "nix" registry flake in order for users
to take advantage of improvements to the UI since its last update in
nixpkgs.
2021-03-14 21:27:58 -06:00

52 lines
1.3 KiB
Nix

{
description = "Package Sources";
inputs = { };
outputs = { self, nixpkgs, ... }: {
overlay = final: prev: {
inherit (self) srcs;
};
srcs =
let
inherit (nixpkgs) lib;
mkVersion = name: input:
let
inputs = (builtins.fromJSON
(builtins.readFile ./flake.lock)).nodes;
ref =
if lib.hasAttrByPath [ name "original" "ref" ] inputs
then inputs.${name}.original.ref
else "";
version =
let version' = builtins.match
"[[:alpha:]]*[-._]?([0-9]+(\.[0-9]+)*)+"
ref;
in
if lib.isList version'
then lib.head version'
else if input ? lastModifiedDate && input ? shortRev
then "${lib.substring 0 8 input.lastModifiedDate}_${input.shortRev}"
else null;
in
version;
in
lib.mapAttrs
(pname: input:
let
version = mkVersion pname input;
in
input // { inherit pname; }
// lib.optionalAttrs (! isNull version)
{
inherit version;
}
)
(lib.filterAttrs (n: _: n != "nixpkgs")
self.inputs);
};
}