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;;; nix.el -- run nix commands in Emacs -*- lexical-binding: t -*-
;; Author: Matthew Bauer <mjbauer95@gmail.com>
;; Homepage: https://github.com/NixOS/nix-mode
;; Keywords: nix
;; This file is NOT part of GNU Emacs.
;;; Commentary:
;; To use this just run:
;; M-x RET nix-shell RET
;; This will give you some
;;; Code:
(require 'pcomplete)
(defgroup nix nil
"Nix-related customizations"
:group 'languages)
(defcustom nix-executable (executable-find "nix")
"Nix executable location."
:group 'nix
:type 'string)
(defcustom nix-build-executable (executable-find "nix-build")
"Nix-build executable location."
:group 'nix
:type 'string)
(defcustom nix-instantiate-executable (executable-find "nix-instantiate")
"Nix executable location."
:group 'nix
:type 'string)
(defcustom nix-store-executable (executable-find "nix-store")
"Nix executable location."
:group 'nix
:type 'string)
(defcustom nix-shell-executable (executable-find "nix-shell")
"Location of ‘nix-shell’ executable."
:group 'nix
:type 'string)
(defcustom nix-store-dir "/nix/store"
"Nix store directory."
:group 'nix
:type 'string)
(defcustom nix-state-dir "/nix/var"
"Nix store directory."
:group 'nix
:type 'string)
(defun nix-system ()
"Get the current system tuple."
(let ((stdout (generate-new-buffer "nix eval"))
result)
(call-process nix-executable nil (list stdout nil) nil
"eval" "--raw" "(builtins.currentSystem)")
(with-current-buffer stdout (setq result (buffer-string)))
(kill-buffer stdout)
result))
(defvar nix-commands
'("add-to-store"
"build"
"cat-nar"
"cat-store"
"copy"
"copy-sigs"
"dump-path"
"edit"
"eval"
"hash-file"
"hash-path"
"log"
"ls-nar"
"ls-store"
"optimise-store"
"path-info"
"ping-store"
"repl"
"run"
"search"
"show-config"
"show-derivation"
"sign-paths"
"to-base16"
"to-base32"
"to-base64"
"upgrade-nix"
"verify"
"why-depends"))
(defvar nix-toplevel-options
'("-v"
"--verbose"
"-h"
"--help"
"--debug"
"--help-config"
"--option"
"--version"))
(defvar nix-config-options
'("allowed-uris"
"allow-import-from-derivation"
"allow-new-priveleges"
"allowed-users"
"auto-optimise-store"
"builders"
"builders-use-substitutes"
"build-users-group"
"compress-build-log"
"connect-timeout"
"cores"
"extra-sandbox-paths"
"extra-substituters"
"fallback"
"fsync-metadata"
"hashed-mirrors"
"http-connections"
"keep-build-log"
"keep-derivations"
"keep-env-derivations"
"keep-outputs"
"max-build-log-size"
"max-jobs"
"max-silent-time"
"netrc-file"
"plugin-files"
"pre-build-hook"
"repeat"
"require-sigs"
"restrict-eval"
"sandbox"
"sandbox-dev-shm-size"
"sandbox-paths"
"secret-key-files"
"show-trace"
"substitute"
"substituters"
"system"
"timeout"
"trusted-public-keys"
"trusted-subtituters"
"trusted-users"))
(defun nix--pcomplete-flags (options)
"Complete flags to the Nix command.
OPTIONS a list of options to accept."
(while (pcomplete-match "^-" 0)
(pcomplete-here options)
(let ((last-arg (nth (1- pcomplete-index) pcomplete-args)))
(cond
((string= "--option" last-arg)
(pcomplete-here nix-config-options)
(pcomplete-here))
((or (string= "-f" last-arg) (string= "--file" last-arg))
(pcomplete-here (pcomplete-entries nil 'file-exists-p)))
((or (string= "--arg" last-arg) (string= "--argstr" last-arg))
(pcomplete-here)
(pcomplete-here))
((or (string= "-I" last-arg) (string= "--include" last-arg))
(pcomplete-here (pcomplete-entries nil 'file-exists-p)))
((or (string= "-k" last-arg) (string= "--keep" last-arg))
(pcomplete-here))
((or (string= "-u" last-arg) (string= "--unset" last-arg))
(pcomplete-here))
((or (string= "-s" last-arg) (string= "--substituter" last-arg))
(pcomplete-here))))))
;;;###autoload
(defun pcomplete/nix ()
"Completion for the nix command."
(nix--pcomplete-flags nix-toplevel-options)
(pcomplete-here nix-commands)
(pcase (nth (1- pcomplete-index) pcomplete-args)
("run"
(nix--pcomplete-flags
(append nix-toplevel-options '("--arg" "--argstr" "-c" "--command"
"-f" "--file" "-i" "-I" "--include"
"-k" "--keep" "-u" "--unset"))))
("build"
(nix--pcomplete-flags
(append nix-toplevel-options '("--arg" "--argstr" "--dry-run"
"-f" "--file" "-I" "--include"
"--no-link" "-o" "--out-link"))))
("add-to-store"
(nix--pcomplete-flags
(append nix-toplevel-options '("--dry-run" "-n" "--name"))))
("copy"
(nix--pcomplete-flags
(append nix-toplevel-options '("--all" "--arg" "--argstr"
"-f" "--file" "--from"
"-I" "--include" "--no-check-sigs"
"--no-recursive" "-s" "--substitute"
"--to"))))
("copy-sigs"
(nix--pcomplete-flags
(append nix-toplevel-options '("--all" "--arg" "--argstr"
"-f" "--file" "-I" "--include"
"-r" "--recursive" "-s" "--substituter"))))
("dump-path"
(nix--pcomplete-flags
(append nix-toplevel-options '("--arg" "--argstr"
"-f" "--file" "-I" "--include"))))
("edit"
(nix--pcomplete-flags
(append nix-toplevel-options '("--arg" "--argstr"
"-f" "--file" "-I" "--include"))))
("eval"
(nix--pcomplete-flags
(append nix-toplevel-options '("--arg" "--argstr"
"-f" "--file" "-I" "--include"
"--json" "--raw"))))
("hash-file"
(nix--pcomplete-flags
(append nix-toplevel-options '("--base16" "--base32"
"--base64" "--type"))))
("hash-path"
(nix--pcomplete-flags
(append nix-toplevel-options '("--base16" "--base32"
"--base64" "--type"))))
("log"
(nix--pcomplete-flags
(append nix-toplevel-options '("--arg" "--argstr"
"-f" "--file" "-I" "--include"
"--json" "--raw"))))
("ls-nar"
(nix--pcomplete-flags
(append nix-toplevel-options '("-d" "--directory"
"--json" "-l" "--long"
"-R" "--recursive"))))
("ls-store"
(nix--pcomplete-flags
(append nix-toplevel-options '("-d" "--directory"
"--json" "-l" "--long"
"-R" "--recursive"))))
("repl"
(nix--pcomplete-flags
(append nix-toplevel-options '("--arg" "--argstr"
"-I" "--include"))))
("search"
(nix--pcomplete-flags
(append nix-toplevel-options '("--arg" "--argstr"
"-f" "--file"
"-I" "--include"
"--json" "--no-cache"
"-u" "--update-cache"))))
("show-config"
(nix--pcomplete-flags
(append nix-toplevel-options '("--json"))))
("show-derivation"
(nix--pcomplete-flags
(append nix-toplevel-options '("--arg" "--argstr"
"-f" "--file"
"-I" "--include"
"-r" "--recursive"))))
("sign-paths"
(nix--pcomplete-flags
(append nix-toplevel-options '("--all" "--arg" "--argstr"
"-f" "--file" "-I" "--include"
"-k" "--key-file" "-r" "--recursive"))))
("upgrade-nix"
(nix--pcomplete-flags
(append nix-toplevel-options '("-p" "--profile"))))
("verify"
(nix--pcomplete-flags
(append nix-toplevel-options '("--all" "--arg" "--argstr"
"-f" "--file" "-I" "--include"
"--no-contents" "--no-trust"
"-r" "--recursive" "-n" "--sigs-needed"
"-s" "--substuter"))))
("why-depends"
(nix--pcomplete-flags
(append nix-toplevel-options '("-a" "--all" "--arg" "--argstr"
"-f" "--file" "-I" "--include"))))
(_ (nix--pcomplete-flags nix-toplevel-options)))
(pcomplete-here (pcomplete-entries)))
(provide 'nix)
;;; nix.el ends here
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