allow passing specialArgs

[KiaraGrouwstra]

closes #77.

exposes specialArgs.

usage

passing values just from TF

extra_build_args = [
  "--arg",
  "specialArgs",
  <<-EOT
    builtins.fromJSON ''${jsonencode({
      # TF map of keys to pass to each nixos module
      my = local.cool_value
    })}''
  EOT
]

passing values from both nix and TF

extra_build_args = [
  "--arg",
  "specialArgs",
  <<-EOT
    {
      # keys to add to each 
      my_cool = "nix string";
      # but here's why we're here: values from TF!
      much_tofu = builtins.fromJSON ''${jsonencode({
        # TF map of keys to pass to each nixos module
        my = local.cool_value
      })}'';
    }
  EOT
]

prerequisites

• flake = false
• hermetic = false

[KiaraGrouwstra]

alternatively, using #85 one could manually pass something similar to the code changes here into config