1{ inputs, ... }:
 2let
 3  globals = import ../globals.nix { };
 4in
 5{
 6  # FIXME: migrate to pkgs and overlays on root
 7  additions =
 8    final: _prev:
 9    import ../pkgs {
10      pkgs = final;
11      inherit globals;
12    };
13  modifications = final: prev: {
14    # Pin SearXNG to latest commit for critical engine fixes:
15    # - Google useragent bypass (#5892, 2026-03-23)
16    # - Bing engine rework (#5793, 2026-03-18)
17    searxng = prev.searxng.overrideAttrs (_oldAttrs: {
18      version = "0-unstable-2026-03-23";
19      src = final.fetchFromGitHub {
20        owner = "searxng";
21        repo = "searxng";
22        rev = "2c1ce3bd37a2";
23        hash = "sha256-Ml7aJXr4IudH/ZnlXDU8OdnUELBb6/vcpAAhAXwhW8A=";
24      };
25    });
26    go_1_25_8 = prev.go_1_25.overrideAttrs (_finalAttrs: {
27      version = "1.25.8";
28      src = final.fetchurl {
29        url = "https://go.dev/dl/go1.25.8.src.tar.gz";
30        hash = "sha256-6YjUokRqx/4/baoImljpk2pSo4E1Wt7ByJgyMKjWxZ4=";
31      };
32    });
33
34    buildGo1258Module = prev.buildGoModule.override {
35      go = final.go_1_25_8;
36    };
37
38    cosign = prev.cosign.override {
39      buildGoModule = final.buildGo1258Module;
40    };
41
42    # Use feishin from master with mpv-unwrapped to avoid wrapper breakage
43    # https://github.com/NixOS/nixpkgs/pull/459155
44    feishin = final.master.feishin.override {
45      mpv-unwrapped = prev.mpv-unwrapped;
46    };
47
48  };
49
50  # When applied, the unstable nixpkgs set (declared in the flake inputs) will
51  # be accessible through 'pkgs.unstable'
52  unstable-packages = _final: prev: {
53    master = import inputs.nixpkgs-master {
54      system = prev.stdenv.hostPlatform.system;
55      config.allowUnfree = true;
56      overlays = [
57        (_final: _prev: {
58          inherit (_prev) claude-code;
59          inherit (_prev) claude-agent-acp;
60          inherit (_prev) codex;
61          inherit (_prev) opencode;
62          inherit (_prev) gemini-cli;
63          inherit (_prev) cursor-cli;
64          inherit (_prev) code-cursor;
65          inherit (_prev) antigravity;
66          inherit (_prev) lazyworktree;
67          inherit (_prev) devenv;
68          inherit (_prev) apko;
69          # example = prev.example.overrideAttrs (oldAttrs: rec {
70          # ...
71          # });
72        })
73      ];
74    };
75    unstable = import inputs.nixpkgs {
76      system = prev.stdenv.hostPlatform.system;
77      config.allowUnfree = true;
78      overlays = [
79        (_final: _prev: {
80          # example = prev.example.overrideAttrs (oldAttrs: rec {
81          # ...
82          # });
83        })
84      ];
85    };
86    wip = import inputs.nixpkgs-wip-consolidated {
87      system = prev.stdenv.hostPlatform.system;
88      config.allowUnfree = true;
89    };
90  };
91
92}