flake8 does not have a plugin for pylint. It uses pyflakes:
→ flake8 --version
3.8.4 (mccabe: 0.6.1, pycodestyle: 2.6.0, pyflakes: 2.2.0) CPython 3.8.6 on Linux
There is currently no way to set the indent size in flake8 or pyflakes
I have written a pylint backend function for flymake function which may also meet your needs:
I remember having this issue once. Turn out my flycheck-flake8rc value is ".flake8rc", not ".flake8". Not sure if this applies to you.
According to the OP, you are using flake8 as your checker, but you are setting .pylintrc which is the config file for pylint. I've never used pylint, so I might be wrong about this one. ...
The syntax highlighting of a file is determined by what mode or modes are active. The most common way to choose what mode to activate is based on the file name extension. python-mode will be activated for .py files, c-mode for .c files, html-mode for .html files, and so on. sh-mode is the mode that provides syntax highlighting for shell scripts, and it is ...