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;;; .dir-locals.el
;;
;; Per-Directory Local Variables:
;; https://www.gnu.org/software/emacs/manual/html_node/emacs/Directory-Variables.html
;;
;; .. hint::
;;
;; If you get ``*** EPC Error ***`` (even after a jedi:install-server) in
;; your emacs session, mostly you have jedi-mode enabled but the python
;; environment is missed. The python environment has to be next to the
;; ``<repo>/.dir-locals.el`` in::
;;
;; ./local/py3
;;
;; To setup such an environment, build target::
;;
;; $ make pyenv.install
;;
;; Some buffer locals are referencing the project environment:
;;
;; - prj-root --> <repo>/
;; - nvm-dir --> <repo>/.nvm
;; - python-environment-directory --> <repo>/local
;; - python-environment-default-root-name --> py3
;; - python-shell-virtualenv-root --> <repo>/local/py3
;; When this variable is set with the path of the virtualenv to use,
;; `process-environment' and `exec-path' get proper values in order to run
;; shells inside the specified virtualenv, example::
;; (setq python-shell-virtualenv-root "/path/to/env/")
;; - python-shell-interpreter --> <repo>/local/py3/bin/python
;;
;; Jedi, flycheck & other python stuff should use the 'python-shell-interpreter'
;; from the local py3 environment.
;;
;; For pyright support you need to install::
;;
;; M-x package-install lsp-pyright
;;
;; Other useful jedi stuff you might add to your ~/.emacs::
;;
;; (global-set-key [f6] 'flycheck-mode)
;; (add-hook 'python-mode-hook 'my:python-mode-hook)
;;
;; (defun my:python-mode-hook ()
;; (add-to-list 'company-backends 'company-jedi)
;; (require 'jedi-core)
;; (jedi:setup)
;; (define-key python-mode-map (kbd "C-c C-d") 'jedi:show-doc)
;; (define-key python-mode-map (kbd "M-.") 'jedi:goto-definition)
;; (define-key python-mode-map (kbd "M-,") 'jedi:goto-definition-pop-marker)
;; )
((nil
. ((fill-column . 80)
(indent-tabs-mode . nil)
(eval . (progn
(add-to-list 'auto-mode-alist '("\\.html\\'" . jinja2-mode))
;; project root folder is where the `.dir-locals.el' is located
(setq-local prj-root
(locate-dominating-file default-directory ".dir-locals.el"))
(setq-local python-environment-directory
(expand-file-name "./local" prj-root))
;; to get in use of NVM environment, install https://github.com/rejeep/nvm.el
(setq-local nvm-dir (expand-file-name "./.nvm" prj-root))
;; use 'py3' environment as default
(setq-local python-environment-default-root-name
"py3")
(setq-local python-shell-virtualenv-root
(expand-file-name
python-environment-default-root-name python-environment-directory))
(setq-local python-shell-interpreter
(expand-file-name
"bin/python" python-shell-virtualenv-root))))))
(makefile-gmake-mode
. ((indent-tabs-mode . t)))
(yaml-mode
. ((eval . (progn
;; flycheck should use the local py3 environment
(setq-local flycheck-yaml-yamllint-executable
(expand-file-name "bin/yamllint" python-shell-virtualenv-root))
(setq-local flycheck-yamllintrc
(expand-file-name ".yamllint.yml" prj-root))
(flycheck-checker . yaml-yamllint)))))
(json-mode
. ((eval . (progn
(setq-local js-indent-level 4)
(flycheck-checker . json-python-json)))))
(js-mode
. ((eval . (progn
;; use nodejs from the (local) NVM environment (see nvm-dir)
(nvm-use-for-buffer)
(setq-local js-indent-level 2)
;; flycheck should use the eslint checker from developer tools
(setq-local flycheck-javascript-eslint-executable
(expand-file-name "node_modules/.bin/eslint" prj-root))
(flycheck-mode)
))))
(python-mode
. ((eval . (progn
;; use nodejs from the (local) NVM environment (see nvm-dir)
(nvm-use-for-buffer)
(if (featurep 'lsp-pyright)
(lsp))
(setq-local python-environment-virtualenv
(list (expand-file-name "bin/virtualenv" python-shell-virtualenv-root)
;;"--system-site-packages"
"--quiet"))
(setq-local pylint-command
(expand-file-name "bin/pylint" python-shell-virtualenv-root))
;; pylint will find the '.pylintrc' file next to the CWD
;; https://pylint.readthedocs.io/en/latest/user_guide/run.html#command-line-options
(setq-local flycheck-pylintrc
".pylintrc")
;; flycheck & other python stuff should use the local py3 environment
(setq-local flycheck-python-pylint-executable
python-shell-interpreter)
;; use 'M-x jedi:show-setup-info' and 'M-x epc:controller' to inspect jedi server
;; https://tkf.github.io/emacs-jedi/latest/#jedi:environment-root -- You
;; can specify a full path instead of a name (relative path). In that case,
;; python-environment-directory is ignored and Python virtual environment
;; is created at the specified path.
(setq-local jedi:environment-root
python-shell-virtualenv-root)
;; https://tkf.github.io/emacs-jedi/latest/#jedi:server-command
(setq-local jedi:server-command
(list python-shell-interpreter
jedi:server-script))
;; jedi:environment-virtualenv --> see above 'python-environment-virtualenv'
;; is set buffer local! No need to setup jedi:environment-virtualenv:
;;
;; Virtualenv command to use. A list of string. If it is nil,
;; python-environment-virtualenv is used instead. You must set non-nil
;; value to jedi:environment-root in order to make this setting work.
;;
;; https://tkf.github.io/emacs-jedi/latest/#jedi:environment-virtualenv
;;
;; (setq-local jedi:environment-virtualenv
;; (list (expand-file-name "bin/virtualenv" python-shell-virtualenv-root)
;; "--python"
;; "/usr/bin/python3.4"
;; ))
))))
)
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