templates/local-ruby-nix: init

flake.nix

@@ -460,6 +460,10 @@
           path = ./templates/sample-nixos-template;
           description = "Simple sample Nix flake with NixOS and home-manager";
         };
+        local-ruby-nix = {
+          path = ./templates/local-ruby-nix;
+          description = "Local Ruby app development with ruby-nix";
+        };
       };
 
       # No amount of formatters will make this codebase nicer but it sure does

templates/local-ruby-nix/Gemfile

@@ -0,0 +1,12 @@
+source 'https://rubygems.org'
+
+gemspec
+
+group :development do
+  gem 'rake'
+  gem 'ruby-lsp', require: false
+end
+
+group :lint do
+  gem 'rubocop', require: false
+end

templates/local-ruby-nix/flake.nix

@@ -0,0 +1,24 @@
+{
+  description = "Basic flake template for setting up development shells";
+
+  inputs = {
+    nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
+    flake-utils.url = "github:numtide/flake-utils";
+
+    ruby-nix.url = "github:sagittaros/ruby-nix";
+    ruby-nix.inputs.nixpkgs.follows = "nixpkgs";
+  };
+
+  outputs = inputs@{ self, ruby-nix, nixpkgs, ... }:
+    let systems = inputs.flake-utils.lib.defaultSystems;
+    in inputs.flake-utils.lib.eachSystem systems (system:
+      let
+        pkgs = import nixpkgs { inherit system; };
+      in
+      {
+        devShells.default =
+          import ./shell.nix { inherit pkgs ruby-nix; };
+
+        formatter = pkgs.treefmt;
+      });
+}

templates/local-ruby-nix/shell.nix

@@ -0,0 +1,25 @@
+{ pkgs ? import <nixpkgs> { }, ruby-nix }:
+
+with pkgs;
+
+let
+  gems = ruby-nix.lib pkgs {
+    name = "ruby-nix-env";
+    ruby = ruby_3_1;
+    gemset = ./gemset.nix;
+  };
+in
+mkShell {
+  buildInputs = [
+    gems.env
+    gems.ruby
+  ];
+
+  packages = [
+    # Formatters
+    nixpkgs-fmt
+
+    # Language servers
+    rnix-lsp
+  ];
+}