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

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

pkgs/tools/misc/lorri/default.nix

@@ -0,0 +1,56 @@
+{ stdenv
+, pkgs
+, fetchFromGitHub
+, rustPlatform
+  # Updater script
+, runtimeShell
+, writeScript
+  # Tests
+, nixosTests
+  # Apple dependencies
+, CoreServices
+, Security
+, cf-private
+}:
+
+rustPlatform.buildRustPackage rec {
+  pname = "lorri";
+  version = "unstable-2019-10-30";
+
+  meta = with stdenv.lib; {
+    description = "Your project's nix-env";
+    homepage = "https://github.com/target/lorri";
+    license = licenses.asl20;
+    maintainers = with maintainers; [ grahamc Profpatsch ];
+  };
+
+  src = fetchFromGitHub {
+    owner = "target";
+    repo = pname;
+    # Run `eval $(nix-build -A lorri.updater)` after updating the revision!
+    rev = "03f10395943449b1fc5026d3386ab8c94c520ee3";
+    sha256 = "0fcl79ndaziwd8d74mk1lsijz34p2inn64b4b4am3wsyk184brzq";
+  };
+
+  cargoSha256 = "1daff4plh7hwclfp21hkx4fiflh9r80y2c7k2sd3zm4lmpy0jpfz";
+  doCheck = false;
+
+  BUILD_REV_COUNT = src.revCount or 1;
+  RUN_TIME_CLOSURE = pkgs.callPackage ./runtime.nix {};
+
+  nativeBuildInputs = with pkgs; [ nix direnv which ];
+  buildInputs =
+    stdenv.lib.optionals stdenv.isDarwin [ CoreServices Security cf-private ];
+
+  passthru = {
+    updater = with builtins; writeScript "copy-runtime-nix.sh" ''
+      #!${runtimeShell}
+      set -euo pipefail
+      cp ${src}/nix/runtime.nix ${toString ./runtime.nix}
+      cp ${src}/nix/runtime-closure.nix.template ${toString ./runtime-closure.nix.template}
+    '';
+    tests = {
+      nixos = nixosTests.lorri;
+    };
+  };
+}