chore(deps): update flake.lock

Flake lock file updates:

• Updated input 'nixpkgs':
    'github:nixos/nixpkgs/c0f3d81' (2026-02-27)
  → 'github:nixos/nixpkgs/917fec9' (2026-03-05)

Author: github-actions[bot]

default.nix

@@ -1,5 +1,5 @@
 { pkgs ? import <nixpkgs> {}, ... }: (import ./flake.nix).outputs {
   self = builtins.path { path = ./.; };
-  inherit (pkgs) system;
+  inherit (pkgs.stdenv.hostPlatform) system;
   nixpkgs = pkgs;
 }

flake.lock

@@ -2,7 +2,7 @@
   inputs.nixpkgs.url = "github:nixos/nixpkgs/nixpkgs-unstable";
   outputs = { self, nixpkgs, ... }@inputs: let
     genAttrs = names: f: builtins.listToAttrs (map (n: { name = n; value = f n; }) names);
-    forAllSys = genAttrs inputs.systems or nixpkgs.lib.platforms.all or [ inputs.system or builtins.throw "No systems list provided!" ];
+    forAllSys = genAttrs inputs.systems or nixpkgs.lib.platforms.all or [ (inputs.system or throw "No systems list provided!") ];
     getpkgswithoverlay = system: if builtins.all (v: nixpkgs ? "${v}") [ "path" "stdenv" "appendOverlays" ]
       then nixpkgs.appendOverlays [ overlay ] else import nixpkgs { inherit system; overlays = [ overlay ]; };
     getpkgs = system: if builtins.all (v: nixpkgs ? "${v}") [ "path" "stdenv" "appendOverlays" ]
@@ -35,10 +35,10 @@
         };
       }) l_pkg_enum;
       # lua51Packages = final.lua5_1.pkgs;
-      l_pkg_sets = builtins.listToAttrs (prev.lib.mapAttrsToList (n: v: {
+      l_pkg_sets = prev.lib.mapAttrs' (n: v: {
         name = v;
         value = prev.lib.attrByPath [ n "pkgs" ] null final;
-      }) l_pkg_enum);
+      }) l_pkg_enum;
     in l_pkg_main // l_pkg_sets // {
       vimPlugins = prev.vimPlugins // {
         ${APPNAME} = (final.neovimUtils.buildNeovimPlugin { pname = APPNAME; }).overrideAttrs {