Add nix files & relax rpyc dep versions

.envrc

@@ -0,0 +1 @@
+use flake

.gitignore

@@ -43,3 +43,5 @@ share/python-wheels/
 .installed.cfg
 *.egg
 MANIFEST
+# Nix build symlinks
+result*

aiopath/default.nix

@@ -0,0 +1,33 @@
+{ lib
+, src
+, version
+, buildPythonPackage
+, anyio
+, aiofile
+}:
+
+buildPythonPackage {
+  pname = "aiopath";
+  inherit version;
+
+  inherit src;
+
+  propagatedBuildInputs = [
+    anyio
+    aiofile
+  ];
+  # Tests require a module that is deprecated, and is not packaged in Nixpkgs,
+  # named: asynctempfile. URL: https://github.com/alemigo/asynctempfile .
+  # Ideally upstream would adopt less obscure dependencies.
+  doCheck = false;
+
+  pythonImportsCheck = [
+    "aiopath"
+  ];
+
+  meta = with lib; {
+    description = "A complete implementation of Python's pathlib that's compatible with asyncio, trio, and the async/await syntax";
+    homepage = "https://github.com/alexdelorenzo/aiopath";
+    license = licenses.lgpl3Plus;
+  };
+}

app-paths/default.nix

@@ -0,0 +1,36 @@
+{ lib
+, src
+, version
+, buildPythonPackage
+, setuptools
+, unpackable
+, asyncstdlib
+, appdirs
+, aiopath
+, strenum
+}:
+
+buildPythonPackage {
+  pname = "app-paths";
+  inherit version;
+
+  inherit src;
+
+  pythonImportsCheck = [
+    "app_paths"
+  ];
+
+  propagatedBuildInputs = [
+    unpackable
+    asyncstdlib
+    appdirs
+    aiopath
+    strenum
+  ];
+
+  meta = with lib; {
+    description = "Like appdirs, but with pathlib, path creation and async support";
+    homepage = "https://github.com/alexdelorenzo/app_paths";
+    license = licenses.lgpl3Plus;
+  };
+}