pythonPackages.yq: repackage as library, convert to application, fix tests

pkgs/development/python-modules/yq/default.nix

@@ -0,0 +1,55 @@
+{ lib
+, buildPythonPackage
+, fetchPypi
+, pkgs
+, argcomplete
+, pyyaml
+, xmltodict
+# Test inputs
+, coverage
+, flake8
+, jq
+, pytest
+, toml
+}:
+
+buildPythonPackage rec {
+  pname = "yq";
+  version = "2.10.1";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "1h6nnkp53mm4spwy8nyxwvh9j6p4lxvf20j4bgjskhnhaw3jl9gn";
+  };
+
+  postPatch = ''
+    substituteInPlace test/test.py --replace "expect_exit_codes={0} if sys.stdin.isatty() else {2}" "expect_exit_codes={0}"
+  '';
+
+  propagatedBuildInputs = [
+    pyyaml
+    xmltodict
+    argcomplete
+  ];
+
+  doCheck = true;
+
+  checkInputs = [
+   pytest
+   coverage
+   flake8
+   pkgs.jq
+   toml
+  ];
+
+  checkPhase = "pytest ./test/test.py";
+
+  pythonImportsCheck = [ "yq" ];
+
+  meta = with lib; {
+    description = "Command-line YAML processor - jq wrapper for YAML documents.";
+    homepage = "https://github.com/kislyuk/yq";
+    license = [ licenses.asl20 ];
+    maintainers = [ maintainers.womfoo ];
+  };
+}