WIP

flake.nix

@@ -13,5 +13,15 @@
           loomio = pkgs.callPackage ./pkg/loomio/default.nix {};
           inherit pkgs;
         };
-    });
+    }) // {
+      nixosConfigurations = {
+        test-vm = nixpkgs.lib.nixosSystem {
+          system = "x86_64-linux";
+          modules = [
+            (import ./modules/overlay.nix)
+            ./hosts/test/configuration.nix
+          ];
+        };
+      };
+    };
 }

hosts/test/configuration.nix

@@ -0,0 +1,54 @@
+{pkgs, ...}: {
+  virtualisation.vmVariant = {
+    # following configuration is added only when building VM with build-vm
+    virtualisation = {
+      memorySize = 2048; # Use 2048MiB memory.
+      cores = 3;
+    };
+  };
+
+  users.users.root.openssh.authorizedKeys.keys = [
+    "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIMNeQYLFauAbzDyIbKC86NUh9yZfiyBm/BtIdkcpZnSU"
+  ];
+
+  services.openssh.enable = true;
+  users.users.root.initialPassword = "root";
+
+  users.users.nixosvmtest.isSystemUser = true ;
+  users.users.nixosvmtest.initialPassword = "test";
+  users.users.nixosvmtest.group = "nixosvmtest";
+  users.groups.nixosvmtest = {};
+
+  users.groups.loomio = {};
+  users.users.loomio = {
+    description = "User to run loomio";
+    group = "loomio";
+    isSystemUser = true;
+  };
+
+  services.postgresql = {
+    enable = true;
+    ensureDatabases = [ "loomio" ];
+    ensureUsers = [{
+      name = "loomio";
+      ensureDBOwnership = true;
+      # ensurePermissions = { "DATABASE loomio" = "ALL PRIVILEGES"; };
+    }];
+  };
+
+  systemd.services.loomio = {
+    enable = true;
+    after = [ "basic.target" ];
+
+    serviceConfig = {
+      User = "loomio";
+      Restart = "always";
+      ExecStart = "${pkgs.loomio}/bin/loomio";
+    };
+    environment = {
+      DATABASE_URL = "postgresql://localhost/loomio";
+    };
+  };
+
+  system.stateVersion = "23.11";
+}

modules/overlay.nix

@@ -0,0 +1,7 @@
+{config, pkgs, ...}: {
+  nixpkgs.overlays = [
+    (self: super: {
+      loomio = super.callPackage ../pkg/loomio {};
+    })
+  ];
+}

pkg/loomio/default.nix

@@ -1,4 +1,4 @@
-{stdenv, callPackage, bundlerEnv, ruby_3_2 }:
+{stdenv, writeText, callPackage, bundlerEnv, ruby_3_2 }:
 
 let
   gemfile-patch = callPackage ./gemfile-patch.nix {};
@@ -9,6 +9,11 @@ let
     gemset = ./. + "/gemset.nix";
     gemdir = src;
   };
+
+  databaseConfig = writeText "database.yml" ''
+    production:
+      url: <%= ENV['DATABASE_URL'] %>
+  '';
 in stdenv.mkDerivation {
   name = "loomio";
   inherit src;
@@ -17,11 +22,13 @@ in stdenv.mkDerivation {
     mkdir -p $out/{bin,share/loomio}
     cp -r * $out/share/loomio
     bin=$out/bin/loomio
+    cp ${databaseConfig} $out/share/loomio/config/database.yml
     cat > $bin <<EOF
 #!/usr/bin/env bash
 
 set -ex
 export BUNDLE_FORCE_RUBY_PLATFORM=true
+export RAILS_ENV=production
 ${gems}/bin/bundle exec rake -f $out/share/loomio/Rakefile db:prepare
 ${gems}/bin/bundle exec puma -C $out/share/loomio/config/puma.rb