nixpkgs-manual.{lib-docs,tests}: Fix cross build

Changed files
+2 -2
doc
+1 -1
doc/doc-support/lib-function-docs.nix
···
fileset = ../../lib;
};
-
buildInputs = [
+
nativeBuildInputs = [
nixdoc
nix
];
+1 -1
doc/tests/manpage-urls.nix
···
{
nativeBuildInputs = [
cacert
-
(python3.withPackages (p: [
+
(python3.pythonOnBuildForHost.withPackages (p: [
p.aiohttp
p.rich
p.structlog