lorri: init at version unstable-2019-10-30

Includes user service (nixos/modules/services/development/lorri) that
starts on demand.

nixos/tests/lorri/builder.sh

@@ -0,0 +1,3 @@
+#!/bin/sh
+
+printf "%s" "${name:?}" > "${out:?}"

nixos/tests/lorri/default.nix

@@ -0,0 +1,26 @@
+import ../make-test-python.nix {
+  machine = { pkgs, ... }: {
+    imports = [ ../../modules/profiles/minimal.nix ];
+    environment.systemPackages = [ pkgs.lorri ];
+  };
+
+  testScript = ''
+    # Copy files over
+    machine.succeed(
+        "cp '${./fake-shell.nix}' shell.nix"
+    )
+    machine.succeed(
+        "cp '${./builder.sh}' builder.sh"
+    )
+
+    # Start the daemon and wait until it is ready
+    machine.execute("lorri daemon > lorri.stdout 2> lorri.stderr &")
+    machine.wait_until_succeeds("grep --fixed-strings 'lorri: ready' lorri.stdout")
+
+    # Ping the daemon
+    machine.execute("lorri ping_ $(readlink -f shell.nix)")
+
+    # Wait for the daemon to finish the build
+    machine.wait_until_succeeds("grep --fixed-strings 'OutputPaths' lorri.stdout")
+  '';
+}

nixos/tests/lorri/fake-shell.nix

@@ -0,0 +1,5 @@
+derivation {
+  system = builtins.currentSystem;
+  name = "fake-shell";
+  builder = ./builder.sh;
+}