doomemacs/modules/tools/direnv/config.el
2019-12-01 15:42:05 -05:00

69 lines
2.8 KiB
EmacsLisp

;;; tools/direnv/config.el -*- lexical-binding: t; -*-
(defvar +direnv--keywords
'("direnv_layout_dir" "PATH_add" "path_add" "log_status" "log_error" "has"
"join_args" "expand_path" "dotenv" "user_rel_path" "find_up" "source_env"
"watch_file" "source_up" "direnv_load" "MANPATH_add" "load_prefix" "layout"
"use" "rvm" "use_nix" "use_guix")
"TODO")
(use-package! direnv
:after-call after-find-file dired-initial-position-hook
:config
(add-hook! 'direnv-mode-hook
(defun +direnv-init-h ()
"Instead of checking for direnv on `post-command-hook', check only once,
when the file is first opened/major mode is activated. This is significantly
less expensive, but is less sensitive to changes to .envrc done outside of
Emacs."
(direnv--disable)
(when direnv-mode
(add-hook 'after-change-major-mode-hook
#'direnv--maybe-update-environment))))
(defadvice! +direnv--make-process-environment-buffer-local-a (items)
:filter-return #'direnv--export
(when items
(mapc 'kill-local-variable '(process-environment exec-path))
(mapc 'make-local-variable '(process-environment exec-path)))
items)
;; Fontify special .envrc keywords; it's a good indication of whether or not
;; we've typed them correctly.
(add-hook! 'direnv-envrc-mode-hook
(defun +direnv-envrc-fontify-keywords-h ()
(font-lock-add-keywords
nil `((,(regexp-opt +direnv--keywords 'symbols)
(0 font-lock-keyword-face)))))
(defun +direnv-update-on-save-h ()
(add-hook 'after-save-hook #'direnv--maybe-update-environment
nil 'local)))
(defadvice! +direnv-update-a (&rest _)
"Update direnv. Useful to advise functions that may run
environment-sensitive logic like `flycheck-default-executable-find'. This fixes
flycheck issues with direnv and on nix."
:before #'flycheck-default-executable-find
(direnv--maybe-update-environment))
(defadvice! +direnv--fail-gracefully-a (orig-fn)
"Don't try to update direnv if the executable isn't present."
:around #'direnv--maybe-update-environment
(if (executable-find "direnv")
(when (file-readable-p (or buffer-file-name default-directory))
(funcall orig-fn))
(doom-log "Couldn't find direnv executable")))
(defadvice! +direnv-update-async-shell-command-a (command &optional output-buffer _error-buffer)
:before #'shell-command
(when (string-match "[ \t]*&[ \t]*\\'" command)
(let ((environment process-environment)
(path exec-path)
(shell shell-file-name))
(with-current-buffer
(get-buffer-create (or output-buffer "*Async Shell Command*"))
(setq-local process-environment environment)
(setq-local exec-path path)
(setq-local shell-file-name shell)))))
(direnv-mode +1))