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the library. If this is what you want to do, use the GNU Lesser General
Public License instead of this License. But first, please read
<http://www.gnu.org/philosophy/why-not-lgpl.html>.

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* About
*guix.el* provides Emacs interface for [[http://www.gnu.org/software/guix/][Guix package manager]].
Well, actually that's not true yet, because this package is under
developement. Currently it is possible to search for packages and to
display information about the packages.
* Requirements
- Guix;
- Emacs 24.3 or above;
- [[https://github.com/jaor/geiser][Geiser]] as this package use it for interacting with guile process.
* Installation
** Automatic
If you use [[https://github.com/quelpa/quelpa][Quelpa]], you can install the package like this:
#+BEGIN_SRC emacs-lisp
(quelpa '(guix :fetcher github :repo "alezost/guix.el" :files ("*.el" "*.scm")))
#+END_SRC
** Manual
For the manual installation, clone the repo, add the directory to the
=load-path= and add some autoloads for the interactive commands:
#+BEGIN_SRC emacs-lisp
(add-to-list 'load-path "/path/to/guix-dir")
(autoload 'guix-search-by-name "guix" nil t)
(autoload 'guix-search-by-regexp "guix" nil t)
(autoload 'guix-all-available-packages "guix" nil t)
(autoload 'guix-newest-available-packages "guix" nil t)
#+END_SRC
* Usage
/Note:/ The first start of Guix REPL may take a long time, especially if
your Guix directories are not compiled, so be patient and do not press
=C-g=. If you want to disable auto-compilation, use the following
setting:
#+BEGIN_SRC emacs-lisp
(setq guix-guile-program '("guile" "--no-auto-compile"))
#+END_SRC
- To list available packages, use the following commands:
: M-x guix-all-available-packages
: M-x guix-newest-available-packages
- To search for packages, use:
: M-x guix-search-by-regexp
By default "name", "synopsis" and "description" of the packages will
be searched. This behavior can be changed with =guix-search-params=
variable.
- To get packages by name, use:
: M-x guix-search-by-name
Information about the packages may be displayed in 2 types of buffers:
"_list_" and "_info_". The following keys are available in the both
buffer types by default:
- =l= / =r= – go backward/forward by the history of the displayed
results (this history is similar to the history of the Emacs =help= or
=Info= modes);
- =g= – refresh current information;
- =C-c C-z= – go to the Guix REPL;
- =h= or =?= – describe current mode to see all available bindings.
Also you can press =RET= in the list buffer to get more information
about the package.
"Info" buffer contains some buttons (as usual you may use =TAB= /
=S-TAB= to move between buttons) which can be used to:
- jump to a package location;
- browse home page of the package;
- describe packages from "Inputs" and "Native inputs" fields.
/Hint:/ If you need several "list" or "info" buffers, you can simlpy
=M-x clone-buffer= them, and each buffer will have its own history.

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;;; guix-backend.el --- Communication with Geiser
;; Copyright © 2014 Alex Kost
;; This program is free software; you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation, either version 3 of the License, or
;; (at your option) any later version.
;; This program is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;; GNU General Public License for more details.
;; You should have received a copy of the GNU General Public License
;; along with this program. If not, see <http://www.gnu.org/licenses/>.
;;; Commentary:
;; This file provides the code for interacting with Guile using Geiser.
;;; Code:
(require 'geiser-repl)
(defvar guix-helper-file
(expand-file-name
"guix-helper.scm"
(file-name-directory (or load-file-name
(locate-library "guix"))))
"Scheme file used for getting info about packages.")
(defvar guix-guile-program (or geiser-guile-binary "guile")
"Name of the guile executable used for Guix REPL.
May be either a string (the name of the executable) or a list of
strings of the form:
(NAME . ARGS)
Where ARGS is a list of arguments to the guile program.")
(defun guix-get-guile-program ()
"Return value suitable for `geiser-guile-binary'.
Result is a list containing `guix-guile-program' and arguments
for loading `guix-helper-file'."
(let ((guile (if (stringp guix-guile-program)
(list guix-guile-program)
guix-guile-program)))
(append guile (list "-l" guix-helper-file))))
;;; REPL
(defcustom guix-repl-startup-time 30000
"Time, in milliseconds, to wait for Guix REPL to startup.
Same as `geiser-repl-startup-time' but is used for Guix REPL.
If you have a slow system, try to increase this time."
:type 'integer
:group 'guix)
(defcustom guix-repl-buffer-name "*Guix REPL*"
"Default name of a Geiser REPL buffer used for Guix."
:type 'string
:group 'guix)
(defcustom guix-after-start-repl-hook ()
"Hook called after Guix REPL is started."
:type 'hook
:group 'guix)
(defvar guix-repl-buffer nil
"Geiser REPL buffer used for communicating with Guix.")
(defun guix-start-repl ()
"Start Geiser REPL configured for Guix."
;; A mix of the code from `guix-geiser-repl--start-repl' and
;; `geiser-repl--to-repl-buffer'.
(message "Starting Geiser REPL for Guix ...")
(let ((impl 'guile)
(geiser-guile-binary (guix-get-guile-program))
(geiser-repl-startup-time guix-repl-startup-time)
(repl (get-buffer-create guix-repl-buffer-name)))
(with-current-buffer repl
(geiser-repl-mode)
(geiser-impl--set-buffer-implementation impl)
(geiser-repl--autodoc-mode -1)
(goto-char (point-max))
(let* ((prompt-re (geiser-repl--prompt-regexp impl))
(deb-prompt-re (geiser-repl--debugger-prompt-regexp impl))
(prompt (geiser-con--combined-prompt prompt-re deb-prompt-re)))
(or prompt-re
(error "Oh no! Guix REPL has not been started"))
(geiser-repl--start-scheme impl nil prompt)
(geiser-repl--quit-setup)
(geiser-repl--history-setup)
(add-to-list 'geiser-repl--repls (current-buffer))
(geiser-repl--set-this-buffer-repl (current-buffer))
(setq geiser-repl--connection
(geiser-con--make-connection (get-buffer-process (current-buffer))
prompt-re
deb-prompt-re))
(geiser-repl--startup impl nil)
(geiser-repl--autodoc-mode 1)
(geiser-company--setup geiser-repl-company-p)
(add-hook 'comint-output-filter-functions
'geiser-repl--output-filter
nil
t)
(set-process-query-on-exit-flag (get-buffer-process (current-buffer))
geiser-repl-query-on-kill-p)
(setq guix-repl-buffer repl)
(message "Guix REPL has been started.")
(run-hooks 'guix-after-start-repl-hook)))))
(defun guix-get-repl-buffer ()
"Return Guix REPL buffer; start REPL if needed."
(or (get-buffer-process guix-repl-buffer)
(guix-start-repl))
guix-repl-buffer)
(defun guix-switch-to-repl ()
"Switch to Guix REPL."
(interactive)
(geiser-repl--switch-to-buffer (guix-get-repl-buffer)))
;;; Evaluating expressions
(defun guix-make-guile-expression (fun &rest args)
"Return string containing a guile expression for calling FUN with ARGS."
(format "(%S %s)" fun
(mapconcat (lambda (arg)
(concat (and (or (symbolp arg) (listp arg))
"'")
(prin1-to-string arg)))
args
" ")))
(defun guix-eval (str &optional wrap)
"Evaluate guile expression STR.
If WRAP is non-nil, wrap STR into (begin ...) form.
Return a list of strings with result values of evaluation."
(with-current-buffer (guix-get-repl-buffer)
(let* ((wrapped (if wrap (geiser-debug--wrap-region str) str))
(code `(:eval (:scm ,wrapped)))
(ret (geiser-eval--send/wait code)))
(if (geiser-eval--retort-error ret)
(error "Error in evaluating guile expression: %s"
(geiser-eval--retort-output ret))
(cdr (assq 'result ret))))))
(defun guix-eval-read (str &optional wrap)
"Evaluate guile expression STR.
For the meaning of WRAP, see `guix-eval'.
Return elisp expression of the first result value of evaluation."
;; Parsing scheme code with elisp `read' is probably not the best idea.
(read (replace-regexp-in-string
"#f\\|#<unspecified>" "nil"
(replace-regexp-in-string
"#t" "t" (car (guix-eval str wrap))))))
;;; Getting packages info
(defvar guix-search-type-alist
'((name . find-packages-by-spec)
(regexp . find-packages-by-regexp)
(all-available . all-available-packages)
(newest-available . newest-available-packages))
"Alist of available search options.
Each association has a form:
(TYPE . FUN)
TYPE is a search type.
FUN is a name of guile function used for searching.")
(defun guix-get-packages (type vals)
"Search for Guix packages and return results.
TYPE is a search type from `guix-search-type-alist'.
It defines a search function which is called with VALS as
arguments.
Returning value is a list of the form of `guix-packages'."
(let ((fun (cdr (assq type guix-search-type-alist))))
(or fun (error "Wrong search type ‘%s’" type))
(let ((packages (guix-eval-read
(apply #'guix-make-guile-expression fun vals))))
(or packages (error "Packages not found")))))
(provide 'guix-backend)
;;; guix-backend.el ends here

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;;; guix-base.el --- Common definitions
;; Copyright © 2014 Alex Kost
;; This program is free software; you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation, either version 3 of the License, or
;; (at your option) any later version.
;; This program is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;; GNU General Public License for more details.
;; You should have received a copy of the GNU General Public License
;; along with this program. If not, see <http://www.gnu.org/licenses/>.
;;; Commentary:
;; This file provides some base and common definitions for guix.el
;; package.
;; List and info buffers have many common patterns that are defined
;; using `guix-define-buffer-type' macro from this file.
;;; Code:
(require 'cl-macs)
(require 'guix-backend)
;;; Parameters (fields) of the packages
(defvar guix-param-alist
'((name . "Name")
(version . "Version")
(license . "License")
(synopsis . "Synopsis")
(description . "Description")
(home-url . "Home page")
(outputs . "Outputs")
(inputs . "Inputs")
(native-inputs . "Native inputs")
(location . "Location"))
"Association list of names and titles of package parameters.
Titles are used for displaying package information.")
(defun guix-get-param-title (param)
"Return a title of a package parameter PARAM."
(let ((desc (cdr (assq param guix-param-alist))))
(or desc
(progn
(setq desc (symbol-name param))
(message "Couldn't find ‘%s’ in `guix-param-alist'."
desc)
desc))))
(defsubst guix-get-param-val (param info)
"Return a value of a parameter PARAM from a package INFO.
INFO is alist of parameters and their values."
(cdr (assq param info)))
(defun guix-get-name-spec (name version &optional output)
"Return Guix package specification by its NAME, VERSION and OUTPUT."
(concat name "-" version
(when output (concat ":" output))))
(defun guix-get-full-name (info)
"Return full name specification of the package by its INFO."
(guix-get-name-spec (guix-get-param-val 'name info)
(guix-get-param-val 'version info)))
;;; Location of the packages
(defvar guix-guile-site-directory nil
"Default guile site directory.
If it is not set by a user, it is set after starting Guile REPL.")
(defun guix-set-site-directory ()
"Set `guix-guile-site-directory' if needed."
(or guix-guile-site-directory
(setq guix-guile-site-directory
(guix-eval-read (guix-make-guile-expression '%site-dir)))))
(add-hook 'guix-after-start-repl-hook 'guix-set-site-directory)
(defun guix-find-location (location)
"Go to LOCATION of a package.
LOCATION is a string of the form:
\"PATH:LINE:COLUMN\"
If PATH is relative, it is considered to be relative to
`guix-guile-site-directory'."
(cl-multiple-value-bind (path line col)
(split-string location ":")
(let ((file (expand-file-name path guix-guile-site-directory))
(line (string-to-number line))
(col (string-to-number col)))
(find-file file)
(goto-char (point-min))
(forward-line (- line 1))
(move-to-column col)
(recenter 1))))
;;; Common definitions for buffer types
(defvar-local guix-packages nil
"List of the currently displayed packages.
Each element of the list is alist with package info of the
following form:
((PARAM . VAL) ...)
PARAM is a parameter name from `guix-param-alist'.
VAL is a value of this parameter.")
(put 'guix-packages 'permanent-local t)
(defvar-local guix-search-type nil
"Type of the current search.
Function `guix-get-packages' called with `guix-search-type' and
`guix-search-vals' returned the current `guix-packages'.")
(put 'guix-search-type 'permanent-local t)
(defvar-local guix-search-vals nil
"Values of the current search.
Function `guix-get-packages' called with `guix-search-type' and
`guix-search-vals' returned the current `guix-packages'.")
(put 'guix-search-vals 'permanent-local t)
(defsubst guix-set-vars (packages search-type search-vals)
(setq guix-packages packages
guix-search-vals search-vals
guix-search-type search-type))
(defmacro guix-define-buffer-type (type parent-mode)
"Define common stuff for TYPE of buffer for displaying packages.
PARENT-MODE is a parent mode for the `guix-TYPE-mode'."
(let ((type-str (symbol-name type)))
(let ((group (intern (concat "guix-" type-str)))
(mode (intern (concat "guix-" type-str "-mode")))
(mode-map (intern (concat "guix-" type-str "-mode-map")))
(mode-init-fun (intern (concat "guix-" type-str "-mode-initialize")))
(buf-name-var (intern (concat "guix-" type-str "-buffer-name")))
(mode-name-var (intern (concat "guix-" type-str "-mode-name")))
(revert-var (intern (concat "guix-" type-str "-revert-no-confirm")))
(revert-fun (intern (concat "guix-" type-str "-revert")))
(redisplay-fun (intern (concat "guix-" type-str "-redisplay")))
(history-var (intern (concat "guix-" type-str "-history-size")))
(history-fun (intern (concat "guix-" type-str "-make-history-item")))
(get-fun (intern (concat "guix-" type-str "-get-packages")))
(set-fun (intern (concat "guix-" type-str "-set")))
(show-fun (intern (concat "guix-" type-str "-show-packages")))
(insert-fun (intern (concat "guix-" type-str "-insert-packages"))))
`(progn
(defgroup ,group nil
,(concat "Buffer with Guix packages.")
:prefix ,(concat "guix-" type-str "-")
:group 'guix)
(defcustom ,buf-name-var ,(concat "*Guix Package " type-str "*")
,(concat "Default name of the " type-str " buffer.")
:type 'string
:group ',group)
(defcustom ,history-var 30
,(concat "Maximum number of items saved in the history of the " type-str " buffer.\n"
"If 0, the history is disabled.")
:type 'integer
:group ',group)
(defcustom ,revert-var nil
,(concat "If non-nil, do not ask to confirm for reverting the " type-str " buffer.")
:type 'boolean
:group ',group)
(define-derived-mode ,mode ,parent-mode ,(concat "Guix-" type-str)
,(concat "Major mode for displaying information about Guix packages.\n\n"
"\\{guix-" type-str "-mode-map}")
(setq-local revert-buffer-function ',revert-fun)
(setq-local guix-history-size ,history-var)
(and (fboundp ',mode-init-fun) (,mode-init-fun)))
(defun ,revert-fun (ignore-auto noconfirm)
"Update information in the current buffer.
The function is suitable for `revert-buffer-function'.
See `revert-buffer' for the meaning of IGNORE-AUTO and NOCONFIRM."
(when (or ,revert-var
noconfirm
(y-or-n-p "Update current information? "))
(let ((packages (,get-fun guix-search-type guix-search-vals)))
(,set-fun packages guix-search-type guix-search-vals t))))
(defun ,redisplay-fun ()
"Redisplay current information.
This function will not update the information, use
\"\\[revert-buffer]\" if you want the full update."
(interactive)
(,show-fun guix-packages))
(defun ,history-fun ()
"Make and return a history item for the current buffer."
(list (lambda (packages search-type search-vals)
(,show-fun packages)
(guix-set-vars packages search-type search-vals))
guix-packages guix-search-type guix-search-vals))
(defun ,set-fun (packages search-type search-vals &optional history-replace)
,(concat "Set up the " type-str " buffer.\n"
"Display PACKAGES, set variables and make history item.\n\n"
"PACKAGES should have a form of `guix-packages'.\n\n"
"See `guix-get-packages' for the meaning of SEARCH-TYPE and\n"
"SEARCH-VALS.\n\n"
"If HISTORY-REPLACE is non-nil, replace current history item,\n"
"otherwise add the new one.")
(let ((buf (if (eq major-mode ',mode)
(current-buffer)
(get-buffer-create ,buf-name-var))))
(with-current-buffer buf
(,show-fun packages)
(guix-set-vars packages search-type search-vals)
(funcall (if history-replace
#'guix-history-replace
#'guix-history-add)
(,history-fun)))
(pop-to-buffer-same-window buf)))
(defun ,show-fun (packages)
"Display PACKAGES in the current buffer."
(let ((inhibit-read-only t))
(erase-buffer)
(,mode)
(,insert-fun packages))
(when (cdr packages)
(message "%d packages." (length packages))))
(let ((map ,mode-map))
(define-key map (kbd "l") 'guix-history-back)
(define-key map (kbd "r") 'guix-history-forward)
(define-key map (kbd "R") ',redisplay-fun)
(define-key map (kbd "C-c C-z") 'guix-switch-to-repl))))))
(provide 'guix-base)
;;; guix-base.el ends here

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;;; guix-helper.scm --- Scheme code for guix.el package
;; Copyright © 2014 Alex Kost
;; This program is free software; you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation, either version 3 of the License, or
;; (at your option) any later version.
;; This program is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;; GNU General Public License for more details.
;; You should have received a copy of the GNU General Public License
;; along with this program. If not, see <http://www.gnu.org/licenses/>.
;;; Code:
(use-modules
(ice-9 vlist)
(srfi srfi-1)
(srfi srfi-11)
(gnu packages)
(guix packages)
(guix ui)
(guix licenses))
(define (funcall-or-map fun obj)
(if (list? obj)
(map fun obj)
(fun obj)))
(define (package-inputs-names inputs)
"Return list of full names of the packages from INPUTS.
INPUTS can be either package inputs or native inputs."
(fold (lambda (input res)
(let ((pkg (cadr input)))
(if (package? pkg)
(cons (package-full-name pkg) res)
res)))
'()
inputs))
(define (package-license-names package)
"Return license name or list of license names of the PACKAGE."
(funcall-or-map (lambda (l)
(and (license? l) (license-name l)))
(package-license package)))
(define package-field-alist
(list
(cons 'name package-name)
(cons 'version package-version)
(cons 'license package-license-names)
(cons 'synopsis package-synopsis)
(cons 'description package-description)
(cons 'home-url package-home-page)
(cons 'outputs package-outputs)
(cons 'inputs (lambda (pkg) (package-inputs-names
(package-inputs pkg))))
(cons 'native-inputs (lambda (pkg) (package-inputs-names
(package-native-inputs pkg))))
(cons 'location (lambda (pkg) (location->string
(package-location pkg))))))
(define (package-field-accessor field)
"Return the procedure of a package FIELD from `package-field-alist'."
(cdr (assq field package-field-alist)))
(define (package-field package field)
"Return the value of a PACKAGE FIELD."
((package-field-accessor field) package))
(define (package-info package . fields)
"Return info about the PACKAGE.
FIELDS are field names from `package-field-alist', if FIELDS are not
specified, use all fields.
Returning value is alist of names and values of package fields."
(let ((use-all-fields (null? fields)))
(let loop ((field-alist package-field-alist)
(res '()))
(if (null? field-alist)
res
(let* ((field-elem (car field-alist))
(field (car field-elem))
(fun (cdr field-elem)))
(loop (cdr field-alist)
(if (or use-all-fields
(memq field fields))
(cons (cons field (fun package)) res)
res)))))))
(define (find-packages-by-spec spec . fields)
"Search for packages by name specification SPEC.
Return list of package info.
For the meaning of FIELDS, see `package-info'."
(let-values (((name version out)
(package-specification->name+version+output spec)))
(map (lambda (pkg)
(apply package-info pkg fields))
(find-packages-by-name name version))))
(define (package-match? regexp package fields)
"Return #t if REGEXP matches any PACKAGE field from FIELDS."
(any (lambda (field)
(let ((val (package-field package field)))
(and (string? val) (regexp-exec regexp val))))
fields))
(define (find-packages-by-regexp regexp match-fields . ret-fields)
"Search for packages by REGEXP string.
MATCH-FIELDS is a list of fields that REGEXP can match.
For the meaning of RET-FIELDS, see `package-info'.
Return list of package info."
(let ((re (make-regexp regexp regexp/icase)))
(fold-packages (lambda (pkg res)
(if (package-match? re pkg match-fields)
(cons (apply package-info pkg ret-fields) res)
res))
'())))
(define (newest-available-packages . fields)
"Return list of package info for the newest available packages.
For the meaning of FIELDS, see `package-info'."
(vhash-fold (lambda (key val res)
(cons (apply package-info (cadr val) fields) res))
'()
(find-newest-available-packages)))
(define (all-available-packages . fields)
"Return list of package info for all available packages.
For the meaning of FIELDS, see `package-info'."
(fold-packages (lambda (pkg res)
(cons (apply package-info pkg fields) res))
'()))

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;;; guix-history.el --- History of buffer information
;; Copyright © 2014 Alex Kost
;; This program is free software; you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation, either version 3 of the License, or
;; (at your option) any later version.
;; This program is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;; GNU General Public License for more details.
;; You should have received a copy of the GNU General Public License
;; along with this program. If not, see <http://www.gnu.org/licenses/>.
;;; Commentary:
;; This file provides support for history of buffers similar to the
;; history of a `help-mode' buffer.
;;; Code:
(require 'cl-macs)
(defvar-local guix-history-stack-item nil
"Current item of the history.
A list of the form (FUNCTION [ARGS ...]).
The item is used by calling (apply FUNCTION ARGS).")
(put 'guix-history-stack-item 'permanent-local t)
(defvar-local guix-history-back-stack nil
"Stack (list) of visited items.
Each element of the list has a form of `guix-history-stack-item'.")
(put 'guix-history-back-stack 'permanent-local t)
(defvar-local guix-history-forward-stack nil
"Stack (list) of items visited with `guix-history-back'.
Each element of the list has a form of `guix-history-stack-item'.")
(put 'guix-history-forward-stack 'permanent-local t)
(defvar guix-history-size 0
"Maximum number of items saved in history.
If 0, the history is disabled.")
(defun guix-history-add (item)
"Add ITEM to history."
(and guix-history-stack-item
(push guix-history-stack-item guix-history-back-stack))
(setq guix-history-forward-stack nil
guix-history-stack-item item)
(when (>= (length guix-history-back-stack)
guix-history-size)
(setq guix-history-back-stack
(cl-loop for elt in guix-history-back-stack
for i from 1 to guix-history-size
collect elt))))
(defun guix-history-replace (item)
"Replace current item in history with ITEM."
(setq guix-history-stack-item item))
(defun guix-history-goto (item)
"Go to the ITEM of history.
ITEM should have the form of `guix-history-stack-item'."
(or (listp item)
(error "Wrong value of history element"))
(setq guix-history-stack-item item)
(apply (car item) (cdr item)))
(defun guix-history-back ()
"Go back to the previous element of history in the current buffer."
(interactive)
(or guix-history-back-stack
(user-error "No previous element in history"))
(push guix-history-stack-item guix-history-forward-stack)
(guix-history-goto (pop guix-history-back-stack)))
(defun guix-history-forward ()
"Go forward to the next element of history in the current buffer."
(interactive)
(or guix-history-forward-stack
(user-error "No next element in history"))
(push guix-history-stack-item guix-history-back-stack)
(guix-history-goto (pop guix-history-forward-stack)))
(provide 'guix-history)
;;; guix-history.el ends here

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;;; guix-info.el --- Major mode for displaying Guix packages
;; Copyright © 2014 Alex Kost
;; This program is free software; you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation, either version 3 of the License, or
;; (at your option) any later version.
;; This program is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;; GNU General Public License for more details.
;; You should have received a copy of the GNU General Public License
;; along with this program. If not, see <http://www.gnu.org/licenses/>.
;;; Commentary:
;; This file provides a help-like buffer for displaying information
;; about Guix packages.
;;; Code:
(require 'guix-history)
(require 'guix-base)
(require 'guix-backend)
(require 'guix-utils)
(defvar guix-info-mode-map
(let ((map (make-sparse-keymap)))
(set-keymap-parent
map (make-composed-keymap button-buffer-map
special-mode-map))
map)
"Keymap for `guix-info-mode'.")
(guix-define-buffer-type info special-mode)
(defface guix-info-param-title
'((t :inherit font-lock-type-face))
"Face used for a title of a package parameter."
:group 'guix-info)
(defface guix-info-name
'((t :inherit font-lock-keyword-face))
"Face used for a name of a package."
:group 'guix-info)
(defface guix-info-version
'((t :inherit font-lock-builtin-face))
"Face used for a version of a package."
:group 'guix-info)
(defface guix-info-synopsis
'((t :inherit font-lock-doc-face))
"Face used for a synopsis of a package."
:group 'guix-info)
(defface guix-info-description
'((t))
"Face used for a description of a package."
:group 'guix-info)
(defface guix-info-license
'((t :inherit font-lock-string-face))
"Face used for a license of a package."
:group 'guix-info)
(defface guix-info-location
'((t :inherit button))
"Face used for a location of a package."
:group 'guix-info)
(defface guix-info-url
'((t :inherit button))
"Face used for URLs."
:group 'guix-info)
(defface guix-info-inputs
'((t :inherit button))
"Face used for inputs of a package."
:group 'guix-info)
(defface guix-info-native-inputs
'((t :inherit guix-info-inputs))
"Face used for native inputs of a package."
:group 'guix-info)
(defcustom guix-info-ignore-empty-vals nil
"If non-nil, do not display parameters with nil values."
:type 'boolean
:group 'guix-info)
(defvar guix-info-param-title-format "%-15s: "
"String used to format a title of each package parameter.
It should be a '%s'-sequence. After inserting a title formatted
with this string, a value of the parameter is inserted.")
(defvar guix-info-multiline-prefix (make-string 17 ?\s)
"String used to format multi-line parameter values.
If a value occupies more than one line, this string is inserted
in the beginning of each line after the first one.")
(defvar guix-info-fill-column 60
"Column used for filling (word wrapping) parameters with long lines.
If a value is not multi-line and it occupies more than this
number of characters, it will be split into several lines.")
(defvar guix-info-delimiter "\n\f\n"
"String used to separate packages info.")
(defvar guix-info-insert-param-alist
'((name . guix-info-name)
(version . guix-info-version)
(license . guix-info-license)
(synopsis . guix-info-synopsis)
(description . guix-info-description)
(outputs . guix-info-outputs)
(home-url . guix-info-insert-url)
(inputs . guix-info-insert-inputs)
(native-inputs . guix-info-insert-native-inputs)
(location . guix-info-insert-location))
"Methods of inserting package parameters.
Car of each assoc is a symbol from `guix-param-alist'.
Cdr is either a face name, used for the inserted value, or a
function, which is called with the value as the argument.")
(defvar guix-info-params
'(name version outputs synopsis location home-url license
inputs native-inputs description)
"List of parameters displayed in the info buffer.
Each parameter should be a symbol from `guix-param-alist'.
The order of displayed parameters is the same as in this list.
If nil, display all parameters with no particular order.")
(defalias 'guix-info-get-packages 'guix-get-packages)
(defun guix-info-get-show-packages (search-type &rest search-vals)
"Search for packages and show results in info buffer.
See `guix-info-get-packages' for the meaning of SEARCH-TYPE and
SEARCH-VALS."
(let ((packages (guix-info-get-packages search-type search-vals)))
(guix-info-set packages search-type search-vals)))
(defun guix-info-insert-packages (packages)
"Display PACKAGES in the current info buffer.
PACKAGES should have a form of `guix-packages'."
(guix-mapinsert (lambda (info)
(apply #'guix-info-insert-info
info guix-info-params))
packages
guix-info-delimiter)
(goto-char (point-min)))
(defun guix-info-insert-info (info &rest params)
"Insert (pretty print) package INFO into the current buffer.
Each element from PARAMS is a parameter to insert (symbol from
`guix-param-alist')."
(mapc (lambda (param)
(guix-info-insert-param
param (guix-get-param-val param info)))
params))
(defun guix-info-insert-param (param val)
"Insert description and value VAL of a parameter PARAM at point.
PARAM is a symbol from `guix-param-alist'."
(unless (and guix-info-ignore-empty-vals (null val))
(let ((title (guix-get-param-title param))
(insert-val (cdr (assq param guix-info-insert-param-alist))))
(insert (format guix-info-param-title-format
(guix-get-string title 'guix-info-param-title)))
(if (and val (functionp insert-val))
(funcall insert-val val)
(guix-info-insert-val
val (and (facep insert-val) insert-val)))
(insert "\n"))))
(defun guix-info-insert-location (location)
"Make button from file LOCATION and insert it at point."
(insert-button
location
'face 'guix-info-location
'action (lambda (btn)
(guix-find-location (button-label btn)))
'follow-link t
'help-echo "mouse-2, RET: Find location of this package"))
(defun guix-info-insert-url (url)
"Make button from URL and insert it at point."
(insert-button
url
'face 'guix-info-url
'action (lambda (btn) (browse-url (button-label btn)))
'follow-link t
'help-echo "mouse-2, RET: Browse URL"))
(defun guix-info-insert-inputs (inputs)
"Make buttons from INPUTS and insert those at point."
(guix-info-insert-package-names inputs 'guix-info-inputs))
(defun guix-info-insert-native-inputs (inputs)
"Make buttons from native INPUTS and insert those at point."
(guix-info-insert-package-names inputs 'guix-info-native-inputs))
(defun guix-info-insert-package-names (names face)
"Make buttons from package NAMES and insert those at point.
NAMES is a list of strings.
Propertize buttons with FACE."
(guix-info-insert-val
(with-temp-buffer
(guix-mapinsert (lambda (name)
(guix-info-insert-package-name name face))
names
guix-list-separator)
(buffer-substring (point-min) (point-max)))))
(defun guix-info-insert-package-name (name face)
"Make button and insert package NAME at point.
Propertize package button with FACE."
(insert-text-button
name
'face face
'action (lambda (btn)
(guix-info-get-show-packages 'name (button-label btn)))
'follow-link t
'help-echo "mouse-2, RET: Describe the package"))
(defun guix-info-insert-val (val &optional face)
"Format and insert parameter value at point.
If VAL is a one-line string longer than `guix-info-fill-column',
split it into several shorter lines.
If FACE is non-nil, propertize inserted line(s) with this FACE."
(if (stringp val)
(let ((strings (split-string val "\n *")))
(and (null (cdr strings)) ; if not multi-line
(> (length val) guix-info-fill-column)
(setq strings
(split-string (guix-info-get-filled-string val)
"\n")))
(insert (guix-get-string (car strings) face))
(guix-info-insert-strings (cdr strings) face))
(insert (guix-get-string val face))))
(defun guix-info-get-filled-string (str &optional col)
"Return string by filling a string STR.
COL controls the width for filling.
If COL is nil, use `guix-info-fill-column'."
(or col (setq col guix-info-fill-column))
(with-temp-buffer
(insert str)
(let ((fill-column col))
(fill-region (point-min) (point-max)))
(buffer-string)))
(defun guix-info-insert-strings (strings &optional face)
"Insert STRINGS at point.
Each string is inserted on a new line after
`guix-info-multiline-prefix'.
If FACE is non-nil, propertize inserted lines with it."
(dolist (str strings)
(insert "\n" guix-info-multiline-prefix
(guix-get-string str face))))
(provide 'guix-info)
;;; guix-info.el ends here

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;;; guix-list.el --- Major mode for displaying Guix packages
;; Copyright © 2014 Alex Kost
;; This program is free software; you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation, either version 3 of the License, or
;; (at your option) any later version.
;; This program is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;; GNU General Public License for more details.
;; You should have received a copy of the GNU General Public License
;; along with this program. If not, see <http://www.gnu.org/licenses/>.
;;; Commentary:
;; This file provides a list-like buffer for displaying information
;; about Guix packages.
;;; Code:
(require 'tabulated-list)
(require 'guix-info)
(require 'guix-history)
(require 'guix-base)
(require 'guix-backend)
(require 'guix-utils)
(defvar guix-list-mode-map
(let ((map (make-sparse-keymap)))
(set-keymap-parent map tabulated-list-mode-map)
(define-key map (kbd "RET") 'guix-list-describe-package)
map)
"Keymap for `guix-list-mode'.")
(guix-define-buffer-type list tabulated-list-mode)
(defcustom guix-list-single-package nil
"If non-nil, list a package even if it is the only matching result.
If nil, show the single package in info buffer."
:type 'boolean
:group 'guix-list)
(defvar guix-list-column-format
'((name 20 t)
(version 10 nil)
(synopsis 30 nil))
"List of columns displayed in a buffer with a list of packages.
Each element of the list should have the form (NAME WIDTH SORT . PROPS).
NAME is a parameter from `guix-param-alist'.
For the meaning of WIDTH, SORT and PROPS, see `tabulated-list-format'.")
(defvar guix-list-column-name-alist ()
"Alist of titles of columns.
Each association is a cons of parameter name and column name.
If no parameter is not found in this alist, the value from
`guix-param-alist' is used for a column name.")
(defvar guix-list-column-value-alist
'((synopsis . guix-list-get-one-line)
(description . guix-list-get-one-line))
"Alist for parameter values inserted in columns.
Each association is a cons of parameter name from
`guix-param-alist' and a function returning a value
that will be inserted.
The function is called with two arguments: the first one is a
value of the parameter; the second argument is a package
info (alist of parameters and their values).")
(defvar guix-list-required-params '(name version)
"List of required package parameters.
Parameters displayed in a list buffer (columns) and parameters
from this list are received for every package.
May be a special value `all', in which case all supported
parameters are received (this may be very slow for lists with a
big number of packages).
Do not remove `name' and `version' from this list as they are
required for identifying a package.")
(defun guix-list-get-params-for-receiving ()
"Return list of package parameters that should be received."
(let ((params (mapcar #'car guix-list-column-format)))
(dolist (param guix-list-required-params params)
(add-to-list 'params param))))
(defun guix-list-mode-initialize ()
"Initial settings for `guix-list-mode'."
;; (setq tabulated-list-padding 2)
(setq tabulated-list-format (guix-list-get-list-format))
(setq tabulated-list-sort-key
(list (guix-get-param-title 'name)))
(tabulated-list-init-header))
(defun guix-list-get-packages (search-type search-vals)
"Search for Guix packages and return results.
See `guix-get-packages' for the meaning of SEARCH-TYPE and
SEARCH-VALS.
If `guix-list-required-params' is not `all', then parameters from
this list are appended to SEARCH-VALS."
(guix-get-packages
search-type
(if (equal guix-list-required-params 'all)
search-vals
(append search-vals (guix-list-get-params-for-receiving)))))
(defun guix-list-get-show-packages (search-type &rest search-vals)
"Search for packages and show results.
See `guix-list-get-packages' for the meaning of SEARCH-TYPE and
SEARCH-VALS.
Results may be displayed in the info buffer, see
`guix-list-single-package' for details."
(let ((packages (guix-list-get-packages search-type search-vals)))
(if (or guix-list-single-package
(cdr packages))
(guix-list-set packages search-type search-vals)
(unless (equal guix-list-required-params 'all)
;; If we don't have all info, we should receive it
(setq packages (guix-info-get-packages search-type search-vals)))
(guix-info-set packages search-type search-vals))))
(defun guix-list-insert-packages (packages)
"Display PACKAGES in the current list buffer."
(setq tabulated-list-entries (guix-list-get-entries packages))
(tabulated-list-print))
(defun guix-list-get-list-format ()
"Return package list specification for `tabulated-list-format'."
(apply #'vector
(mapcar
(lambda (col-spec)
(let ((name (car col-spec)))
(cons (or (cdr (assq name guix-list-column-name-alist))
(guix-get-param-title name))
(cdr col-spec))))
guix-list-column-format)))
(defun guix-list-get-entries (packages)
"Return list of values for `tabulated-list-entries'.
Values are taken from PACKAGES which should have the form of
`guix-list-packages'."
(mapcar (lambda (info)
(list (guix-get-full-name info)
(guix-list-get-entry info)))
packages))
(defun guix-list-get-entry (info)
"Return array of values for `tabulated-list-entries'.
Package parameters are taken from INFO which should be an alist
of parameters and values."
(apply #'vector
(mapcar
(lambda (col-spec)
(let* ((param (car col-spec))
(val (guix-get-param-val param info))
(fun (cdr (assq param guix-list-column-value-alist))))
(if (and val fun)
(funcall fun val info)
(guix-get-string val))))
guix-list-column-format)))
(defun guix-list-get-one-line (str _)
"Return one-line string from a multi-line STR."
(guix-get-one-line str))
(defun guix-list-get-full-name ()
"Return full name of the current package."
(or (tabulated-list-get-id)
(user-error "No package here")))
(defun guix-list-describe-package ()
"Describe the current package."
(interactive)
(guix-info-get-show-packages 'name (guix-list-get-full-name)))
(provide 'guix-list)
;;; guix-list.el ends here

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;;; guix-utils.el --- General utility functions
;; Copyright © 2014 Alex Kost
;; This program is free software; you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation, either version 3 of the License, or
;; (at your option) any later version.
;; This program is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;; GNU General Public License for more details.
;; You should have received a copy of the GNU General Public License
;; along with this program. If not, see <http://www.gnu.org/licenses/>.
;;; Commentary:
;; This file provides auxiliary general functions for guix.el package.
;;; Code:
(defvar guix-true-string "Yes")
(defvar guix-false-string "–")
(defvar guix-list-separator ", ")
(defun guix-get-string (val &optional face)
"Convert VAL into a string and return it.
VAL can be an expression of any type.
If VAL is t/nil, it is replaced with
`guix-true-string'/`guix-false-string'.
If VAL is list, its elements are concatenated using
`guix-list-separator'.
If FACE is non-nil, propertize returned string with this FACE."
(let ((str (cond
((stringp val) val)
((null val) guix-false-string)
((eq t val) guix-true-string)
((numberp val) (number-to-string val))
((listp val) (mapconcat #'guix-get-string
val guix-list-separator))
(t (prin1-to-string val)))))
(if face
(propertize str 'face face)
str)))
(defun guix-get-one-line (str)
"Return one-line string from a multi-line STR."
(replace-regexp-in-string "\n" " " str))
(defun guix-mapinsert (function sequence separator)
"Like `mapconcat' but for inserting text.
Apply FUNCTION to each element of SEQUENCE, and insert SEPARATOR
at point between each FUNCTION call."
(funcall function (car sequence))
(mapc (lambda (obj)
(insert separator)
(funcall function obj))
(cdr sequence)))
(provide 'guix-utils)
;;; guix-utils.el ends here

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;;; guix.el --- Interface for GNU Guix package manager
;; Copyright © 2014 Alex Kost
;; Author: Alex Kost <alezost@gmail.com>
;; Version: 0.01
;; Package-Requires: ((geiser "0.3"))
;; URL: https://github.com/alezost/guix.el
;; Keywords: tools
;; This program is free software; you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation, either version 3 of the License, or
;; (at your option) any later version.
;; This program is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;; GNU General Public License for more details.
;; You should have received a copy of the GNU General Public License
;; along with this program. If not, see <http://www.gnu.org/licenses/>.
;;; Commentary:
;; This package is under development. The goal is to make a
;; full-featured Emacs interface for Guix package manager
;; <http://www.gnu.org/software/guix/>.
;; Currently the package provides an interface for searching, listing
;; and getting information about Guix packages.
;; To install this package, add the following to your init-file:
;;
;; (add-to-list 'load-path "/path/to/guix-dir")
;; (autoload 'guix-search-by-name "guix" nil t)
;; (autoload 'guix-search-by-regexp "guix" nil t)
;; (autoload 'guix-all-available-packages "guix" nil t)
;; (autoload 'guix-newest-available-packages "guix" nil t)
;;; Code:
(require 'guix-list)
(defgroup guix nil
"Interface for Guix package manager."
:prefix "guix-"
:group 'external)
(defvar guix-search-params '(name synopsis description)
"Default list of parameters for searching by regexp.
Parameters are symbols from `guix-param-alist'.")
(defvar guix-search-history nil
"A history of minibuffer prompts.")
;;;###autoload
(defun guix-search-by-name (name)
"Search for Guix packages by NAME.
NAME is a string with name specification. It may optionally contain
a version number. Examples: \"guile\", \"guile-2.0.11\"."
(interactive
(list (read-string "Package name: " nil 'guix-search-history)))
(guix-list-get-show-packages 'name name))
;;;###autoload
(defun guix-search-by-regexp (regexp &rest params)
"Search for Guix packages by REGEXP.
PARAMS are package parameters that should be searched.
If PARAMS are not specified, use `guix-search-params'."
(interactive
(list (read-string "Regexp: " nil 'guix-search-history)))
(or params (setq params guix-search-params))
(guix-list-get-show-packages 'regexp regexp params))
;; ;;;###autoload
;; (defun guix-installed-packages ()
;; "Display information about installed Guix packages."
;; (interactive)
;; (guix-list-get-show-packages 'installed))
;;;###autoload
(defun guix-all-available-packages ()
"Display information about all available Guix packages."
(interactive)
(guix-list-get-show-packages 'all-available))
;;;###autoload
(defun guix-newest-available-packages ()
"Display information about the newest available Guix packages."
(interactive)
(guix-list-get-show-packages 'newest-available))
(provide 'guix)
;;; guix.el ends here