Use top level flake, with specific shell.nix for subprojects

Author: rien

api/flake.nix

@@ -0,0 +1,74 @@
+{ pkgs ? import <nixpkgs> { }, system ? builtins.currentSystem, ... }:
+let
+  dev = fetchTarball "https://github.com/chvp/devshell/archive/main.tar.gz";
+  devshell = pkgs.devshell or (import dev { inherit system; });
+  ruby = pkgs.ruby_3_2;
+in
+devshell.mkShell {
+  name = "Dolos API server";
+  imports = [
+    "${devshell.extraModulesDir}/language/ruby.nix"
+    "${devshell.extraModulesDir}/git/hooks.nix"
+  ];
+  git.hooks = {
+    enable = true;
+  };
+  packages = with pkgs; [
+    nixpkgs-fmt
+    docker-compose
+    docker
+  ];
+  language.ruby = {
+    package = (pkgs.lowPrio ruby);
+    nativeDeps = with pkgs; [ libmysqlclient ];
+  };
+  env = [
+    {
+      name = "DATABASE_ROOT_PASSWORD";
+      eval = "dolos";
+    }
+    {
+      name = "TEST_DATABASE_URL";
+      eval = "mysql2://root:[email protected]:3306/dolos_test";
+    }
+    {
+      name = "DATABASE_URL";
+      eval = "mysql2://root:[email protected]:3306/dolos";
+    }
+  ];
+  serviceGroups.server.services = {
+    rails.command = "rails db:prepare && rails s -p 3000";
+    worker.command = "rails jobs:work";
+    mysql.command = "mysql";
+  };
+  commands = [
+    {
+      name = "mysql";
+      category = "database";
+      help = "Start database docker";
+      command = ''
+        trap "systemd-run --user docker stop dolos-db" 0
+        docker run --name dolos-db -p 3306:3306 --rm -v dolos-db-data:/var/lib/mysql -e MYSQL_ROOT_PASSWORD=$DATABASE_ROOT_PASSWORD mariadb:latest &
+        wait
+      '';
+    }
+    {
+      name = "mysql-console";
+      category = "database";
+      help = "Open database console";
+      command = ''
+        docker exec -i dolos-db mysql -uroot -p"$DATABASE_ROOT_PASSWORD"
+      '';
+    }
+    {
+      name = "gems:update";
+      category = "dependencies";
+      help = "Update the `Gemfile.lock` and `gemset.nix` files";
+      command = ''
+        bundle install
+        bundle pristine
+        ${pkgs.bundix}/bin/bundix
+      '';
+    }
+  ];
+}

api/shell.nix

@@ -0,0 +1,18 @@
+{ pkgs ? import <nixpkgs> {}, system ? builtins.currentSystem, ... }:
+let
+  dev = fetchTarball "https://github.com/chvp/devshell/archive/main.tar.gz";
+  devshell = pkgs.devshell or (import dev { inherit system; });
+in devshell.mkShell {
+  name = "Dolos docs - dolos.ugent.be";
+  packages = with pkgs; [
+    nodejs
+    yarn
+  ];
+  commands = [
+    {
+      name = "dev";
+      help = "Run development server";
+      command = "yarn dev";
+    }
+  ];
+}

docs/shell.nix

@@ -0,0 +1,38 @@
+{
+  description = "Dolos - Source Code Plagiarism Detection";
+
+  inputs = {
+    nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";
+    flake-utils.url = "github:numtide/flake-utils";
+    devshell = {
+      url = "github:chvp/devshell";
+      inputs = {
+        flake-utils.follows = "flake-utils";
+        nixpkgs.follows = "nixpkgs";
+      };
+    };
+  };
+
+  outputs = inputs@{ self, nixpkgs, devshell, flake-utils }:
+    flake-utils.lib.eachDefaultSystem (system:
+      let
+        pkgs = import nixpkgs {
+          inherit system;
+          overlays = [
+            devshell.overlays.default
+            (self: super: {
+              nodejs = super.nodejs-18_x;
+            })
+          ];
+        };
+      in
+    {
+      devShells = rec {
+        default = dolos-general;
+        dolos-general = import ./shell.nix { inherit pkgs system; };
+        dolos-docs = import ./docs/shell.nix { inherit pkgs system; };
+        dolos-api = import ./api/shell.nix { inherit pkgs system; };
+      };
+    }
+  );
+}

flake.lock

@@ -0,0 +1,17 @@
+{ pkgs ? import <nixpkgs> { }, ... }:
+pkgs.devshell.mkShell {
+  name = "Dolos";
+  packages = with pkgs; [
+    nodejs
+    yarn
+    python3
+    gcc
+    gnumake
+    tree-sitter
+    nixpkgs-fmt
+  ];
+  env = [{
+    name = "PYTHON";
+    eval = "${pkgs.python3}/bin/python";
+  }];
+}