setup: add Nix derivation with build environment

Tools/setup/shell.nix

@@ -0,0 +1,64 @@
+let
+	pkgs = import (builtins.fetchTarball {
+		name = "nixos-20.09-2020-10-29";
+		url = "https://github.com/nixos/nixpkgs/archive/edb26126d98bc696f4f3e206583faa65d3d6e818.tar.gz";
+		sha256 = "1cl4ka4kk7kh3bl78g06dhiidazf65q8miyzaxi9930d6gwyzkci";
+	}) {};
+	empy = with pkgs.python3Packages; buildPythonPackage rec {
+		pname = "empy";
+		version = "3.3.4";
+		src = fetchPypi {
+			inherit pname version;
+			sha256 = "1cq1izl6l87i5i3vj0jcqfksh10kpiwpr2m19vgpj530bdw4kb3k";
+		};
+		doCheck = false;
+	};
+	pyros-genmsg = with pkgs.python3Packages; buildPythonPackage rec {
+		pname = "pyros-genmsg";
+		version = "0.5.8";
+		src = fetchPypi {
+			inherit version;
+			pname = "pyros_genmsg";
+			sha256 = "0y7l131lc77v0c1rhxza41cxnnxc7acfqzlqf84fdya0kiyv071w";
+		};
+		doCheck = false;
+	};
+	pyulog = with pkgs.python3Packages; buildPythonPackage rec {
+		pname = "pyulog";
+		version = "0.8.0";
+		src = fetchPypi {
+			inherit pname version;
+			sha256 = "1ivvhfi9rsrqdk9f06rj0q1d367ngyy0xyc2x9mdwjx3dazwgn45";
+		};
+		propagatedBuildInputs = [ numpy ];
+		doCheck = false;
+	};
+in pkgs.mkShell {
+	nativeBuildInputs = [ pkgs.cmake ];
+	buildInputs = [
+		pkgs.gcc-arm-embedded
+		pkgs.python3
+	] ++ (with pkgs.python3Packages; [
+		argcomplete
+		cerberus
+		coverage
+		empy
+		jinja2
+		matplotlib
+		numpy
+		packaging
+		pandas
+		pkgconfig
+		psutil
+		pygments
+		pyros-genmsg
+		pyserial
+		pyulog
+		pyyaml
+		requests
+		setuptools
+		six
+		toml
+		wheel
+	]);
+}