chore(nix): various dev shell improvements

.github/workflows/NixFlakeCheck.yml

@@ -0,0 +1,28 @@
+---
+name: Nix Flake - Check
+
+on:
+  workflow_dispatch: {}
+  push:
+    branches: [ prod, dev ]
+  pull_request:
+    branches: [ prod, dev ]
+
+jobs:
+  flake-check:
+    runs-on: ubuntu-24.04
+    steps:
+      - uses: actions/checkout@v6
+
+      - uses: cachix/install-nix-action@v31
+
+      - run: nix flake check
+
+  formatting-check:
+    runs-on: ubuntu-24.04
+    steps:
+      - uses: actions/checkout@v6
+
+      - uses: cachix/install-nix-action@v31
+
+      - run: nix fmt -- --ci

.gitignore

@@ -8,4 +8,5 @@ renderer/
 .DS_Store
 *.pkg
 *.exe
-.idea
+.idea
+**/.direnv

CONTRIBUTING.md

@@ -23,6 +23,14 @@ Be sure to fill out the pull request template accordingly to make reviewing your
 
 # How to Contribute
 
+### Development with Nix
+
+It's entirely possible to contribute to Synthesis without using Nix, but some may
+prefer to use it. In order to use Nix with synthesis, you must first [install nix](https://nixos.org/download/),
+[enable flakes](https://wiki.nixos.org/wiki/Flakes#Setup), then you can enter
+one of shells with `nix develop` (e.g. `nix develop .#syntehsis`). You can also
+use [direnv](https://direnv.net/) to automatically enter into the relevant dev-shell.
+
 ### Found a bug? Have an idea for a feature?
 
 Please [contact us](#Contact-Us) to let us know about the issue or feature!

exporter/.envrc

@@ -0,0 +1,3 @@
+if command -v nix &>/dev/null; then
+    use flake .#exporter
+fi

fission/.envrc

@@ -0,0 +1,3 @@
+if command -v nix &>/dev/null; then
+    use flake .#fission
+fi

fission/flake.nix → flake.nix

@@ -4,7 +4,7 @@
   inputs.nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";
 
   outputs =
-    inputs:
+    { self, nixpkgs }:
     let
       supportedSystems = [
         "x86_64-linux"
@@ -13,12 +13,16 @@
         "aarch64-darwin"
       ];
       forEachSupportedSystem =
-        f: inputs.nixpkgs.lib.genAttrs supportedSystems (system: f inputs.nixpkgs.legacyPackages.${system});
+        f: nixpkgs.lib.genAttrs supportedSystems (system: f nixpkgs.legacyPackages.${system});
     in
     {
       devShells = forEachSupportedSystem (pkgs: {
-        default = pkgs.mkShell {
+        default = self.devShells.${pkgs.stdenv.hostPlatform.system}.fission;
+        fission = pkgs.mkShell {
           nativeBuildInputs = with pkgs; [
+            nodejs
+            bun
+            git-lfs
             playwright-driver.browsers
           ];
 
@@ -27,8 +31,19 @@
             PLAYWRIGHT_SKIP_VALIDATE_HOST_REQUIREMENTS = true;
           };
         };
+        exporter = pkgs.mkShell {
+          packages = with pkgs; [
+            python3
+            black
+            isort
+            bun
+          ];
+        };
       });
 
       formatter = forEachSupportedSystem (pkgs: pkgs.nixfmt-tree);
+
+      # Build all devShells, instead of just verifying they are deviations
+      checks = forEachSupportedSystem (pkgs: self.devShells.${pkgs.stdenv.hostPlatform.system});
     };
 }

installer/exporter/OSX/Scripts/preinstall

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 FUSION_ADDIN_LOCATION=~/Library/Application\ Support/Autodesk/ApplicationPlugins/
 

installer/exporter/OSX/build.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 FUSION_ADDIN_LOCATION=~/Library/Application\ Support/Autodesk/ApplicationPlugins/
 EXPORTER_SOURCE_DIR=../../../exporter/SynthesisFusionAddin/

multiplayer/.envrc

@@ -0,0 +1,3 @@
+if command -v nix &>/dev/null; then
+    use flake .#fission
+fi

protocols/proto_compile.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 if ! [ -d ../api/Api/Gen/ ]
 then
     mkdir ../api/Api/Gen/