chore: add nix flake based local dev workflow

README.md

@@ -62,3 +62,22 @@ In order to run the full suite of Acceptance tests, run `make testacc`.
 ```shell
 make testacc
 ```
+
+## Tips for Local Testing
+
+```shellsession
+# start a nix development shell which has go an all dependencies required to build
+nix develop -c zsh 
+
+# build and install the provider
+go install
+
+# link the provider into the terraform plugins dir so terraform can pick it up as a "Implied Local Mirror"
+# https://developer.hashicorp.com/terraform/cli/config/config-file#implied-local-mirror-directories
+
+$registry=registry.terraform.io # alternatively use 'registry.opentofu.org'
+$platform=darwin_arm64 # replace with your platform
+
+mkdir -p "~/.terraform.d/plugins/$registry/meshcloud/meshstack/0.1.0/$platform/"
+ln -s ~/go/bin/terraform-provider-meshstack "~/.terraform.d/plugins/$registry/meshcloud/meshstack/0.1.0/$platform/terraform-provider-meshstack_v0.1.0"
+```

flake.nix

@@ -0,0 +1,37 @@
+{
+  description = "meshStack Terraform Provider";
+
+  inputs = {
+    nixpkgs.url = "nixpkgs/nixos-unstable";
+  };
+
+
+  outputs = { self, nixpkgs }:
+    let
+      goVersion = 22; # Change this to update the whole stack
+
+      # use an overlay to pin default go version
+      overlays = [ (final: prev: { go = prev."go_1_${toString goVersion}"; }) ]; 
+
+      supportedSystems = [ "x86_64-linux" "x86_64-darwin" "aarch64-darwin" ];
+      forEachSupportedSystem = f: nixpkgs.lib.genAttrs supportedSystems (system: f {
+        pkgs = import nixpkgs { inherit overlays system; };
+      });
+    in
+    {
+      devShells = forEachSupportedSystem ({ pkgs }: {
+        default = pkgs.mkShell {
+          packages = with pkgs; [
+            # go 1.22 (specified by overlay)
+            go_1_22
+
+            # goimports, godoc, etc.
+            gotools
+
+            # https://github.com/golangci/golangci-lint
+            golangci-lint
+          ];
+        };
+      });
+    };
+}