resholve: fold in python package deps

Protects resholve and dependents from breakages as py27 support is
removed (or rots).

pkgs/development/misc/resholve/default.nix

···
   resholve = callPackage ./resholve.nix {
     inherit (source) rSrc version;
     inherit (deps.oil) oildev;
+    inherit (deps) configargparse;
     inherit resholve-utils;
   };
   # funcs to validate and phrase invocations of resholve

pkgs/development/misc/resholve/deps.nix

···
-{ callPackage
+{ lib
+, callPackage
+, fetchFromGitHub
 , python27
 , ...
 }:
···
 
 rec {
   # binlore = callPackage ./binlore.nix { };
-  oil = callPackage ./oildev.nix { inherit python27; };
+  oil = callPackage ./oildev.nix {
+    inherit python27;
+    inherit six;
+    inherit typing;
+  };
+  configargparse = python27.pkgs.buildPythonPackage rec {
+    pname = "configargparse";
+    version = "1.5.3";
+
+    src = fetchFromGitHub {
+      owner = "bw2";
+      repo = "ConfigArgParse";
+      rev = "v${version}";
+      sha256 = "1dsai4bilkp2biy9swfdx2z0k4akw4lpvx12flmk00r80hzgbglz";
+    };
+
+    doCheck = false;
+
+    pythonImportsCheck = [ "configargparse" ];
+
+    meta = with lib; {
+      description = "A drop-in replacement for argparse";
+      homepage = "https://github.com/bw2/ConfigArgParse";
+      license = licenses.mit;
+    };
+  };
+  six = python27.pkgs.buildPythonPackage rec {
+    pname = "six";
+    version = "1.16.0";
+
+    src = python27.pkgs.fetchPypi {
+      inherit pname version;
+      sha256 = "1e61c37477a1626458e36f7b1d82aa5c9b094fa4802892072e49de9c60c4c926";
+    };
+
+    doCheck = false;
+
+    meta = {
+      description = "A Python 2 and 3 compatibility library";
+      homepage = "https://pypi.python.org/pypi/six/";
+      license = lib.licenses.mit;
+    };
+  };
+  typing = python27.pkgs.buildPythonPackage rec {
+    pname = "typing";
+    version = "3.10.0.0";
+
+    src = python27.pkgs.fetchPypi {
+      inherit pname version;
+      sha256 = "13b4ad211f54ddbf93e5901a9967b1e07720c1d1b78d596ac6a439641aa1b130";
+    };
+
+    doCheck = false;
+
+    meta = with lib; {
+      description = "Backport of typing module to Python versions older than 3.5";
+      homepage = "https://docs.python.org/3/library/typing.html";
+      license = licenses.psfl;
+    };
+  };
 }

pkgs/development/misc/resholve/oildev.nix

···
 , cmark
 , file
 , glibcLocales
+, six
+, typing
 }:
 
 rec {
···
 
     nativeBuildInputs = [ re2c file makeWrapper ];
 
-    propagatedBuildInputs = with python27.pkgs; [ six typing ];
+    propagatedBuildInputs = [ six typing ];
 
     doCheck = true;
 

pkgs/development/misc/resholve/resholve.nix

···
 , rSrc
 , version
 , oildev
+, configargparse
 , binlore
 , resholve-utils
 }:
···
 
   propagatedBuildInputs = [
     oildev
-    python27.pkgs.configargparse
+    configargparse
   ];
 
   postPatch = ''