perlPackages.ConfigIniFiles: Use buildPerlPackage

[dasJ]

This is to fix cross NixOS builds. buildPerlModule uses Module::Build
which does not cross-build. The package doesn't seem to need
Module::Build so switching to buildPerlPackage seems to be safe.

Motivation for this change

#66741 (comment)

Things done

• Built on platform(s)
  • x86_64-linux
  • aarch64-linux
  • x86_64-darwin
  • aarch64-darwin
• For non-Linux: Is sandbox = true set in nix.conf? (See Nix manual)
• Tested, as applicable:
  • NixOS test(s) (look inside nixos/tests)
  • and/or package tests
  • or, for functions and "core" functionality, tests in lib/tests or pkgs/test
  • made sure NixOS tests are linked to the relevant packages
• Tested compilation of all packages that depend on this change using nix-shell -p nixpkgs-review --run "nixpkgs-review rev HEAD". Note: all changes have to be committed, also see nixpkgs-review usage
• Tested basic functionality of all binary files (usually in ./result/bin/)
• 22.05 Release Notes (or backporting 21.11 Release notes)
  • (Package updates) Added a release notes entry if the change is major or breaking
  • (Module updates) Added a release notes entry if the change is significant
  • (Module addition) Added a release notes entry if adding a new NixOS module
  • (Release notes changes) Ran nixos/doc/manual/md-to-db.sh to update generated release notes
• Fits CONTRIBUTING.md.

[dasJ]

@GrahamcOfBorg test switchTest

[ius]

The build output is a superset of the original derivation, so I see no reason why this wouldn't work.

+ .../lib/perl5/5.34.0/x86_64-linux-thread-multi/perllocal.pod

Other than that, it's equal.