From 5a77cf829a5b00568992e8380e800527f1b0fd24 Mon Sep 17 00:00:00 2001
From: Luc Perkins <lucperkins@gmail.com>
Date: Sun, 31 Jul 2022 21:10:16 +0200
Subject: [PATCH] Add elm env

---
 README.md      |  7 ++++++
 elm/.envrc     |  1 +
 elm/flake.lock | 60 ++++++++++++++++++++++++++++++++++++++++++++++++++
 elm/flake.nix  | 25 +++++++++++++++++++++
 flake.nix      |  5 +++++
 5 files changed, 98 insertions(+)
 create mode 100644 elm/.envrc
 create mode 100644 elm/flake.lock
 create mode 100644 elm/flake.nix

diff --git a/README.md b/README.md
index 7fe9046..814381f 100644
--- a/README.md
+++ b/README.md
@@ -73,6 +73,11 @@ The sections below list what each template includes. In all cases, you're free t
 - [Elixir] 1.13.4, including [mix] and [IEx]
 - [Node.js][node] 18.7.0 (largely for [Phoenix] projects)
 
+### [`elm`](./elm/)
+
+- [Elm] 0.19.1
+- [elm2nix] 0.2.1
+
 ### [`gleam`](./gleam/)
 
 - [Gleam] 0.22.1
@@ -171,6 +176,8 @@ All of the templates have only the root [flake](./flake.nix) as a flake input. T
 [dhall]: https://dhall-lang.org
 [dhall-to-nix]: https://github.com/dhall-lang/dhall-haskell/tree/master/dhall-nix
 [elixir]: https://elixir-lang.org
+[elm]: https://elm-lang.org
+[elm2nix]: https://github.com/cachix/elm2nix
 [flake-utils]: https://github.com/numtide/flake-utils
 [gleam]: https://gleam.run
 [go]: https://go.dev
diff --git a/elm/.envrc b/elm/.envrc
new file mode 100644
index 0000000..a5dbbcb
--- /dev/null
+++ b/elm/.envrc
@@ -0,0 +1 @@
+use flake .
diff --git a/elm/flake.lock b/elm/flake.lock
new file mode 100644
index 0000000..fb87cce
--- /dev/null
+++ b/elm/flake.lock
@@ -0,0 +1,60 @@
+{
+  "nodes": {
+    "dev": {
+      "inputs": {
+        "flake-utils": "flake-utils",
+        "nixpkgs": "nixpkgs"
+      },
+      "locked": {
+        "lastModified": 1659291915,
+        "narHash": "sha256-W1on31THSVnqFf/eC8wxP+oGu1jRpFb7K419w21ijNc=",
+        "owner": "the-nix-way",
+        "repo": "dev-templates",
+        "rev": "41e9f202186994255e28bfa4c518e0c9ffce2bb5",
+        "type": "github"
+      },
+      "original": {
+        "owner": "the-nix-way",
+        "repo": "dev-templates",
+        "type": "github"
+      }
+    },
+    "flake-utils": {
+      "locked": {
+        "lastModified": 1656928814,
+        "narHash": "sha256-RIFfgBuKz6Hp89yRr7+NR5tzIAbn52h8vT6vXkYjZoM=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "7e2a3b3dfd9af950a856d66b0a7d01e3c18aa249",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    },
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1659291823,
+        "narHash": "sha256-8GrIQYelrtzEAXDWdfHpAodwrjL08mVES7nRDXSF9fE=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "4a778d9b98941fe28f0ac4b8400749a16dbb03fe",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "dev": "dev"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}
diff --git a/elm/flake.nix b/elm/flake.nix
new file mode 100644
index 0000000..26ff4ff
--- /dev/null
+++ b/elm/flake.nix
@@ -0,0 +1,25 @@
+{
+  description = "A Nix-flake-based Protobuf development environment";
+
+  inputs = { dev.url = "github:the-nix-way/dev-templates"; };
+
+  outputs = { self, dev }:
+    let inherit (dev.lib) flake-utils nixpkgs;
+    in flake-utils.lib.eachDefaultSystem (system:
+      let
+        pkgs = import nixpkgs { inherit system; };
+        inherit (pkgs) mkShell;
+
+        elm = pkgs.elmPackages.elm;
+      in {
+        devShells = {
+          default = mkShell {
+            buildInputs = [ elm ] ++ (with pkgs; [ elm2nix ]);
+
+            shellHook = ''
+              echo "elm `${elm}/bin/elm --version`"
+            '';
+          };
+        };
+      });
+}
diff --git a/flake.nix b/flake.nix
index 9898075..5452c97 100644
--- a/flake.nix
+++ b/flake.nix
@@ -59,6 +59,11 @@
           description = "Elixir development environment";
         };
 
+        elm = {
+          path = ./elm;
+          description = "Elm development environment";
+        };
+
         gleam = {
           path = ./gleam;
           description = "Gleam development environment";