refactor: hosts/common/programs/zeal: fewer file-level inherits

hosts/common/programs/zeal.nix

@@ -1,9 +1,7 @@
 { config, lib, pkgs, ... }:
 let
-  inherit (builtins) map;
-  inherit (lib) mkIf mkOption optionalString types;
   cfg = config.sane.programs.docsets.config;
-  configOpts = types.submodule {
+  configOpts = with lib; types.submodule {
     options = {
       rustPkgs = mkOption {
         type = types.listOf types.str;
@@ -25,14 +23,14 @@ in {
   };
 
   sane.programs.docsets = {
-    configOption = mkOption {
+    configOption = with lib; mkOption {
       type = configOpts;
       default = {};
     };
     packageUnwrapped = pkgs.symlinkJoin {
       name = "docsets";
       # build each package with rust docs
-      paths = map (name:
+      paths = builtins.map (name:
         let
           orig = pkgs."${name}";
           withDocs = orig.overrideAttrs (upstream: {
@@ -44,7 +42,7 @@ in {
         "${toString withDocs}/share/docset"
       ) cfg.rustPkgs;
       # link only the docs (not any binaries)
-      postBuild = optionalString (cfg.rustPkgs != []) ''
+      postBuild = lib.optionalString (cfg.rustPkgs != []) ''
         mkdir -p $out/share/docset
         mv $out/*.docset $out/share/docset
       '';
@@ -53,7 +51,7 @@ in {
     sandbox.enable = false;  # meta-package; no binaries
   };
 
-  environment.pathsToLink = mkIf config.sane.programs.zeal.enabled [
+  environment.pathsToLink = lib.mkIf config.sane.programs.zeal.enabled [
     "/share/docset"
   ];
 }