feat(packages): add apache-airflow

v1/nix/modules/drvs/apache-airflow.nix

@@ -0,0 +1,43 @@
+{config, lib, drv-parts, ...}: let
+  l = lib // builtins;
+  python = config.deps.python;
+
+in {
+
+  imports = [
+    ../drv-parts/mach-nix-xs
+  ];
+
+  deps = {nixpkgs, ...}: {
+    inherit (nixpkgs) fetchFromGitHub;
+  };
+
+  pname = "apache-airflow";
+  version = "2.5.0";
+
+  src = config.deps.fetchFromGitHub {
+    owner = "apache";
+    repo = "airflow";
+    rev = "refs/tags/${config.version}";
+    # Download using the git protocol rather than using tarballs, because the
+    # GitHub archive tarballs don't appear to include tests
+    forceFetchGit = true;
+    hash = "sha256-QWUXSG+RSHkF5kP1ZYtx+tHjO0n7hfya9CFA3lBhJHk=";
+  };
+
+  pythonSources = config.deps.fetchPythonRequirements {
+    inherit (config.deps) python;
+    requirementsList = [
+      "apache-airflow"
+    ];
+    hash = "sha256-ZEeIVAsHoKq9g25+b7XWUSOf2/HUYMUAPl30IRG+Zak=";
+    maxDate = "2023-01-01";
+  };
+
+  # Replace some python packages entirely with candidates from nixpkgs, because
+  #   they are hard to fix
+  substitutions = {
+    cron-descriptor = python.pkgs.cron-descriptor;
+    python-nvd3 = python.pkgs.python-nvd3;
+  };
+}