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48 lines
1.3 KiB
48 lines
1.3 KiB
;;; nix-drv-mode.el --- Major mode for viewing .drv files
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;; Maintainer: Matthew Bauer <mjbauer95@gmail.com>
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;; Homepage: https://github.com/NixOS/nix-mode
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;; Version: 1.2.1
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;; Keywords: nix, languages, tools, unix
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;; Package-Requires: ((emacs "24.3") (json-mode "1.6.0"))
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;; This file is NOT part of GNU Emacs.
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;;; Commentary:
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;; A major mode for viewing Nix derivations (.drv files). See the Nix
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;; manual for more information available at
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;; https://nixos.org/nix/manual/.
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;;; Code:
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(require 'json-mode)
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(require 'nix)
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(defvar-local nix-drv-mode nil)
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;;;###autoload
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(defun nix-drv-mode ()
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"Pretty print Nix’s .drv files."
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(interactive)
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(when (string-match (format "^%s/" nix-store-dir) (buffer-file-name))
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(if nix-drv-mode
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(progn
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(erase-buffer)
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(insert-file-contents (buffer-file-name))
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(setq nix-drv-mode nil)
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(set-buffer-modified-p nil)
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(read-only-mode nil))
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(let ((inhibit-read-only t))
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(setq nix-drv-mode t)
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(erase-buffer)
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(insert (shell-command-to-string
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(format "%s show-derivation \"%s\""
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nix-executable
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(buffer-file-name))))
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(json-mode)
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(set-buffer-modified-p nil)
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(read-only-mode 1)))))
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(provide 'nix-drv-mode)
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;;; nix-drv-mode.el ends here
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