Overriding crateConfig for generated Cargo.nix

[thehabbos007]

Hey, I'm in a situation where I'd like to pass custom buildRustCrate configuration for all of my crates. I saw that there's a crateConfig option at the top level of the generated Cargo.nix, I can't seem to find any documentation for it, is it a deprecated field?

crate2nix/crate2nix/templates/Cargo.nix.tera

Lines 24 to 27 in e494b56

	, crateConfig
	? if builtins.pathExists ./crate-config.nix
	then pkgs.callPackage ./crate-config.nix {}
	else {}

It seems like a useful configuration option. I was thinking it could be called defaultCrateConfig and override the per-crate crateConfig here:

crate2nix/crate2nix/templates/nix/crate2nix/default.nix

Lines 289 to 290 in e494b56

	crateConfig =
	builtins.removeAttrs crateConfig' [ "resolvedDefaultFeatures" "devDependencies" ];

With something like this:

            crateConfig = 
              lib.attrsets.recursiveUpdate 
                (builtins.removeAttrs crateConfig' [ "resolvedDefaultFeatures" "devDependencies" ]) 
                defaultCrateConfig;