[Bugfix] Clean up some cruft in mamba.py (#9343) #1

	name: mypy

	on:
	# Trigger the workflow on push or pull request,
	# but only for the main branch
	push:
	branches:
	- main
	pull_request:
	branches:
	- main

	jobs:
	mypy:
	runs-on: ubuntu-latest
	strategy:
	matrix:
	python-version: ["3.8", "3.9", "3.10", "3.11", "3.12"]
	steps:
	- uses: actions/checkout@v4
	- name: Set up Python ${{ matrix.python-version }}
	uses: actions/setup-python@v5
	with:
	python-version: ${{ matrix.python-version }}
	- name: Install dependencies
	run: \|
	python -m pip install --upgrade pip
	pip install mypy==1.11.1
	pip install types-setuptools
	pip install types-PyYAML
	pip install types-requests
	pip install types-setuptools
	- name: Mypy
	run: \|
	tools/mypy.sh

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