config(nix/devshell): Add packages and env variables needed for snowbridge-parachain

Author: monyarm

flake.lock

@@ -4,12 +4,17 @@
   inputs = {
     nixpkgs.url = "github:NixOS/nixpkgs/nixos-22.05";
     flake-utils.url = github:numtide/flake-utils;
+
+    rust-overlay.url = "github:oxalica/rust-overlay";
+    rust-overlay.inputs.nixpkgs.follows = "nixpkgs";
+    rust-overlay.inputs.flake-utils.follows = "flake-utils";
   };
 
   outputs = {
     self,
     nixpkgs,
     flake-utils,
+    rust-overlay,
   }:
     {
       overlays.default = import ./overlay.nix;
@@ -21,6 +26,7 @@
           inherit system;
           overlays = [
             self.overlays.default
+            rust-overlay.overlay
           ];
         };
       in {

flake.nix

@@ -10,9 +10,16 @@ _finalNixpkgs: prevNixpkgs: let
   cosmos-theta-testnet = prevNixpkgs.callPackage ./packages/cosmos-theta-testnet {};
 
   snowbridge-relayer = prevNixpkgs.callPackage ./packages/snowbridge-relayer {};
+
+  # not working yet
+  snowbridge-parachain = prevNixpkgs.callPackage ./packages/snowbridge-parachain {};
+
+  abigen = prevNixpkgs.writeShellScriptBin "abigen" ''
+    ${prevNixpkgs.go-ethereum}/bin/abigen $@
+  '';
 in {
   metacraft-labs = rec {
     solana = solana-full-sdk;
-    inherit cosmos-theta-testnet snowbridge-relayer;
+    inherit cosmos-theta-testnet snowbridge-relayer snowbridge-parachain abigen;
   };
 }