Spacemacs python configuration

gistfile1.txt

Spacemacs python

Configure python layer.
  (python :variables
    python-lsp-backend 'lsp
    python-lsp-server 'pyright
    python-fill-column 99
    python-formatter 'black
    python-format-on-save t
    python-test-runner 'pytest
    python-sort-imports-on-save t
    python-pipenv-activate t)

Create virtualenv with pipenv.
  ptvsd is the dap debugger, optional.
  Using a specific version of black since pipenv doesn't like prerelease versions.
  
  Having the virtualenv inside the project folder.
    export PIPENV_VENV_IN_PROJECT=1
    mkdir project && cd project && pipenv install --dev epc importmagic isort ipython flake8 pylint autoflake pytest "black==21.7b0" ptvsd

  If the virtualenv is not inside the project folder there are two options.
    1. Sym. link to the full virtualenv path.
       ln -s /home/trap/.local/share/virtualenvs/project-lioCfIOB/ /home/trap/work/project/.venv
    2. Have a file called .venv containing the full path to the virtualenv.
       echo "/home/trap/.local/share/virtualenvs/project-lioCfIOB/" > /home/trap/work/project/.venv

Optionally, configure flycheck-checker.
  Setting flake8 as the first checker, then pylint only if flake8 reports no errors. Turn off lsp-diagnostics since it overwrites flycheck-checker with lsp as the checker.
  
  .dir-locals.el inside project folder.
  
  ;;; Directory Local Variables
  ;;; For more information see (info "(emacs) Directory Variables")

  ((python-mode . ((flycheck-checker . python-flake8)
                    (eval . (flycheck-add-next-checker 'python-flake8 '(warning . python-pylint)))
                    (lsp-diagnostics-disabled-modes . (python-mode)))))