Neovim 0.5.0 issue reproducible environment to demo that Perl integration is not working

neovim.nix

# How to use/test:
#   nix-build neovim.nix -o neovim
#   neovim/bin/nvim

let
  nixpkgs-unstable-pin = fetchTarball {
    url = "https://releases.nixos.org/nixos/unstable/nixos-21.11pre308897.e41ba381140/nixexprs.tar.xz";
    sha256 = "1smkm0z569lp321m7jsyy1fvnvl2nc8vh2nak946r9fd4hl4px4p";
  };
in
{ pkgs ? import nixpkgs-unstable-pin {}
}:
let
  inherit (pkgs) callPackage lib makeWrapper symlinkJoin neovim;
  perlForNeovim = callPackage ./perl.nix {};
in
symlinkJoin {
  name = "${lib.getName neovim}-wrapper";
  nativeBuildInputs = [ makeWrapper ];
  paths = [ neovim ];
  postBuild = ''
    wrapProgram "$out"/bin/nvim \
      --prefix PATH : ${lib.escapeShellArg (lib.makeBinPath [ perlForNeovim ])}
  '';
}

perl-dependencies.nix

# Author: Viacheslav Lotsmanov
# License: MIT https://raw.githubusercontent.com/unclechu/neovimrc/master/LICENSE

# This module is intended to be called with ‘nixpkgs.callPackage’
{ fetchurl, lib, buildPerlPackage, perlPackages }:
with perlPackages;
rec {
  # Automatically generated using “nix-generate-from-cpan Neovim::Ext”
  NeovimExt = buildPerlPackage {
    pname = "Neovim-Ext";
    version = "0.05";
    src = fetchurl {
      url = "mirror://cpan/authors/id/J/JA/JACQUESG/Neovim-Ext-0.05.tar.gz";
      sha256 = "9f3d91b040ed218b4d9523708c680533b33b4e81efcaf3e6c01ae51da2bfdd2c";
    };
    buildInputs = [ ArchiveZip FileSlurper FileWhich ProcBackground TestPod TestPodCoverage ];
    propagatedBuildInputs = [ ClassAccessor EvalSafe IOAsync MsgPackRaw ];
    meta = {
      description = "Perl bindings for neovim";
      license = with lib.licenses; [ artistic1 gpl1Plus ];
    };

    # The test is huge and it fails. It tries to download Neovim executable binary. Insane.
    doCheck = false;
  };

  # A dependency of “NeovimExt”
  EvalSafe = buildPerlPackage {
    pname = "Eval-Safe";
    version = "0.02";
    src = fetchurl {
      url = "mirror://cpan/authors/id/M/MA/MATHIAS/Eval-Safe/Eval-Safe-0.02.tar.gz";
      sha256 = "55a52c233e2dae86113f9f19b34f617edcfc8416f9bece671267bd1811b12111";
    };
    meta = {
      description = "Simplified safe evaluation of Perl code";
      license = lib.licenses.mit;
    };

    # Bug fix when “*-devdoc” package is not found
    outputs = [ "out" "dev" ];
  };

  # A dependency of “NeovimExt”
  MsgPackRaw = buildPerlPackage {
    pname = "MsgPack-Raw";
    version = "0.05";
    src = fetchurl {
      url = "mirror://cpan/authors/id/J/JA/JACQUESG/MsgPack-Raw-0.05.tar.gz";
      sha256 = "8559e2b64cd98d99abc666edf2a4c8724c9534612616af11f4eb0bbd0d422dac";
    };
    buildInputs = [ TestPod TestPodCoverage ];
    meta = {
      description = "Perl bindings to the msgpack C library";
      license = with lib.licenses; [ artistic1 gpl1Plus ];
    };
  };
}

perl.nix

# Author: Viacheslav Lotsmanov
# License: MIT https://raw.githubusercontent.com/unclechu/neovimrc/master/LICENSE

# This module is intended to be called with ‘nixpkgs.callPackage’
{ callPackage
, makeWrapper
, symlinkJoin
, lib

, perl
, perlPackages

# Overridable dependencies
, localPerlDependencies ? callPackage ./perl-pependencies.nix {}

# Build options
, extraPerlDependencies ? []
}:
let
  perlDeps = [
    localPerlDependencies.NeovimExt
    perlPackages.Appcpanminus # Neovim :checkhealth reports it’s missing
    perlPackages.locallib
  ] ++ extraPerlDependencies;

  # This is a hack to have no warnings in “:checkhealth” in Neovim.
  # Obtained initially from “perl -I ~/perl5/lib/perl5/ -Mlocal::lib”.
  localLibVars = lib.splitString "\n" ''
    export PATH="''${HOME}/perl5/bin''${PATH:+:''${PATH}}"
    export PERL5LIB="''${HOME}/perl5/lib/perl5''${PERL5LIB:+:''${PERL5LIB}}"
    export PERL_LOCAL_LIB_ROOT="''${HOME}/perl5''${PERL_LOCAL_LIB_ROOT:+:''${PERL_LOCAL_LIB_ROOT}}"
    export PERL_MB_OPT="--install_base \"''${HOME}/perl5\""
    export PERL_MM_OPT="INSTALL_BASE=''${HOME}/perl5"
  '';
in
symlinkJoin {
  name = "perl-for-neovim";
  nativeBuildInputs = [ makeWrapper ];
  paths = [ perl ];
  postBuild = ''
    wrapProgram "$out"/bin/perl --prefix PERL5LIB : ${perlPackages.makeFullPerlPath perlDeps} ${
      builtins.concatStringsSep " "
        (map (x: "--run " + lib.escapeShellArg x) localLibVars)
    }
  '';
}

Hello, on line 14 of the perl.nix file there is a spelling error: instead of './perl-pependencies.nix', it should be './perl-dependencies.nix'