Improve Nix development experience

.envrc

@@ -0,0 +1 @@
+use flake

README.md

@@ -21,7 +21,7 @@ Types and bindings to connect easily to a running Holochain conductor from Rust.
 
 ``` bash
 ./build-fixture.sh
-cargo test
+cargo test --release
 ```
 
 ## Contribute

build-fixture.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 set -e
 
 CARGO_HOME=./fixture/zomes/foo/.cargo cargo build -p test_wasm_foo --release --target wasm32-unknown-unknown --target-dir ./fixture/zomes/foo/target

flake.nix

@@ -17,6 +17,7 @@
               inputs'.holonix.packages.lair-keystore
               inputs'.holonix.packages.rust
               pkgs.go
+              pkgs.perl
             ] ++ (pkgs.lib.optionals pkgs.stdenv.isDarwin [
               # needed to build Holochain on macos
               pkgs.darwin.apple_sdk.frameworks.SystemConfiguration