os/pkgs/flake.nix

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{
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);
};
}