From 13b4b7531af7ab5b5d9fa28d191184e73b3ec535 Mon Sep 17 00:00:00 2001
From: Scott Moore <me@scottwillmoore.au>
Date: Tue, 11 Jul 2023 22:29:08 +1000
Subject: [PATCH] Add development environment using Nix flakes

---
 .envrc     |  1 +
 .gitignore |  3 ++
 flake.lock | 80 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 flake.nix  | 44 ++++++++++++++++++++++++++++++
 4 files changed, 128 insertions(+)
 create mode 100644 .envrc
 create mode 100644 flake.lock
 create mode 100644 flake.nix

diff --git a/.envrc b/.envrc
new file mode 100644
index 00000000..3550a30f
--- /dev/null
+++ b/.envrc
@@ -0,0 +1 @@
+use flake
diff --git a/.gitignore b/.gitignore
index 89593d6d..464cb30a 100644
--- a/.gitignore
+++ b/.gitignore
@@ -63,3 +63,6 @@ dist/
 .next
 .DS_Store
 /.vscode
+
+# Direnv
+.direnv/
diff --git a/flake.lock b/flake.lock
new file mode 100644
index 00000000..e31d4356
--- /dev/null
+++ b/flake.lock
@@ -0,0 +1,80 @@
+{
+  "nodes": {
+    "flake-parts": {
+      "inputs": {
+        "nixpkgs-lib": "nixpkgs-lib"
+      },
+      "locked": {
+        "lastModified": 1688466019,
+        "narHash": "sha256-VeM2akYrBYMsb4W/MmBo1zmaMfgbL4cH3Pu8PGyIwJ0=",
+        "owner": "hercules-ci",
+        "repo": "flake-parts",
+        "rev": "8e8d955c22df93dbe24f19ea04f47a74adbdc5ec",
+        "type": "github"
+      },
+      "original": {
+        "owner": "hercules-ci",
+        "repo": "flake-parts",
+        "type": "github"
+      }
+    },
+    "nix-packages": {
+      "locked": {
+        "lastModified": 1689047559,
+        "narHash": "sha256-s3xILs1+Hh4z8zudSnbOz5xM7ltzpg4WZ952ea7OlZ0=",
+        "owner": "nixos",
+        "repo": "nixpkgs",
+        "rev": "a187ec43efbeec0f3be6f9d13a6836fcbb914a9d",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nixos",
+        "ref": "nixpkgs-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "nix-systems": {
+      "locked": {
+        "lastModified": 1681028828,
+        "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
+        "owner": "nix-systems",
+        "repo": "default",
+        "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-systems",
+        "repo": "default",
+        "type": "github"
+      }
+    },
+    "nixpkgs-lib": {
+      "locked": {
+        "dir": "lib",
+        "lastModified": 1688049487,
+        "narHash": "sha256-100g4iaKC9MalDjUW9iN6Jl/OocTDtXdeAj7pEGIRh4=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "4bc72cae107788bf3f24f30db2e2f685c9298dc9",
+        "type": "github"
+      },
+      "original": {
+        "dir": "lib",
+        "owner": "NixOS",
+        "ref": "nixos-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "flake-parts": "flake-parts",
+        "nix-packages": "nix-packages",
+        "nix-systems": "nix-systems"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}
diff --git a/flake.nix b/flake.nix
new file mode 100644
index 00000000..01e6b52f
--- /dev/null
+++ b/flake.nix
@@ -0,0 +1,44 @@
+{
+  inputs = {
+    flake-parts.url = "github:hercules-ci/flake-parts";
+    nix-packages.url = "github:nixos/nixpkgs/nixpkgs-unstable";
+    nix-systems.url = "github:nix-systems/default";
+  };
+  outputs = inputs @ {
+    flake-parts,
+    nix-packages,
+    nix-systems,
+    ...
+  }: let
+    packagesModule = {
+      perSystem = {system, ...}: {
+        _module.args.packages = import nix-packages {
+          inherit system;
+        };
+      };
+    };
+
+    systemsModule = {
+      systems = import nix-systems;
+    };
+  in
+    flake-parts.lib.mkFlake {inherit inputs;} {
+      imports = [
+        packagesModule
+        systemsModule
+      ];
+
+      perSystem = {packages, ...}: {
+        devShells.default = packages.mkShell {
+          nativeBuildInputs = with packages; [
+            # Nix
+            alejandra
+            nil
+
+            # Node
+            nodejs
+          ];
+        };
+      };
+    };
+}