200 lines
7.8 KiB
Scheme
200 lines
7.8 KiB
Scheme
;;; GNU Guix --- Functional package management for GNU
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;;; Copyright © 2015 Federico Beffa <beffa@fbengineering.ch>
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;;;
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;;; This file is part of GNU Guix.
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;;;
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;;; GNU Guix is free software; you can redistribute it and/or modify it
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;;; under the terms of the GNU General Public License as published by
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;;; the Free Software Foundation; either version 3 of the License, or (at
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;;; your option) any later version.
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;;;
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;;; GNU Guix is distributed in the hope that it will be useful, but
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;;; WITHOUT ANY WARRANTY; without even the implied warranty of
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;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;;; GNU General Public License for more details.
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;;;
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;;; You should have received a copy of the GNU General Public License
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;;; along with GNU Guix. If not, see <http://www.gnu.org/licenses/>.
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(define-module (guix build emacs-build-system)
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#:use-module ((guix build gnu-build-system) #:prefix gnu:)
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#:use-module (guix build utils)
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#:use-module (guix build emacs-utils)
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#:use-module (srfi srfi-1)
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#:use-module (srfi srfi-26)
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#:use-module (ice-9 rdelim)
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#:use-module (ice-9 regex)
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#:use-module (ice-9 match)
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#:export (%standard-phases
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emacs-build))
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;; Commentary:
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;;
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;; Builder-side code of the build procedure for ELPA Emacs packages.
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;;
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;; Code:
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;; Directory suffix where we install ELPA packages. We avoid ".../elpa" as
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;; Emacs expects to find the ELPA repository 'archive-contents' file and the
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;; archive signature.
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(define %install-suffix "/share/emacs/site-lisp/guix.d")
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(define* (build #:key outputs inputs #:allow-other-keys)
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"Compile .el files."
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(let* ((emacs (string-append (assoc-ref inputs "emacs") "/bin/emacs"))
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(out (assoc-ref outputs "out"))
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(elpa-name-ver (store-directory->elpa-name-version out))
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(el-dir (string-append out %install-suffix "/" elpa-name-ver))
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(deps-dirs (emacs-inputs-directories inputs)))
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(setenv "SHELL" "sh")
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(parameterize ((%emacs emacs))
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(emacs-byte-compile-directory el-dir
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(emacs-inputs-el-directories deps-dirs)))))
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(define* (patch-el-files #:key outputs #:allow-other-keys)
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"Substitute the absolute \"/bin/\" directory with the right location in the
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store in '.el' files."
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(let* ((out (assoc-ref outputs "out"))
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(elpa-name-ver (store-directory->elpa-name-version out))
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(el-dir (string-append out %install-suffix "/" elpa-name-ver))
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(substitute-cmd (lambda ()
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(substitute* (find-files "." "\\.el$")
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(("\"/bin/([^.].*)\"" _ cmd)
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(string-append "\"" (which cmd) "\""))))))
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(with-directory-excursion el-dir
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;; Some old '.el' files (e.g., tex-buf.el in AUCTeX) are still encoded
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;; with the "ISO-8859-1" locale.
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(unless (false-if-exception (substitute-cmd))
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(with-fluids ((%default-port-encoding "ISO-8859-1"))
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(substitute-cmd))))
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#t))
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(define* (install #:key outputs #:allow-other-keys)
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"Install the package contents."
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(let* ((out (assoc-ref outputs "out"))
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(elpa-name-ver (store-directory->elpa-name-version out))
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(src-dir (getcwd))
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(tgt-dir (string-append out %install-suffix "/" elpa-name-ver)))
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(copy-recursively src-dir tgt-dir)
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#t))
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(define* (move-doc #:key outputs #:allow-other-keys)
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"Move info files from the ELPA package directory to the info directory."
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(let* ((out (assoc-ref outputs "out"))
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(elpa-name-ver (store-directory->elpa-name-version out))
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(el-dir (string-append out %install-suffix "/" elpa-name-ver))
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(info-dir (string-append out "/share/info"))
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(info-files (find-files el-dir "\\.info$")))
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(unless (null? info-files)
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(mkdir-p info-dir)
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(with-directory-excursion el-dir
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(when (file-exists? "dir") (delete-file "dir"))
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(for-each (lambda (f)
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(copy-file f (string-append info-dir "/" (basename f)))
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(delete-file f))
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info-files)))
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#t))
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(define* (make-autoloads #:key outputs inputs #:allow-other-keys)
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"Generate the autoloads file."
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(let* ((emacs (string-append (assoc-ref inputs "emacs") "/bin/emacs"))
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(out (assoc-ref outputs "out"))
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(elpa-name-ver (store-directory->elpa-name-version out))
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(elpa-name (package-name->name+version elpa-name-ver))
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(el-dir (string-append out %install-suffix "/" elpa-name-ver)))
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(parameterize ((%emacs emacs))
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(emacs-generate-autoloads elpa-name el-dir))
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#t))
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(define (emacs-package? name)
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"Check if NAME correspond to the name of an Emacs package."
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(string-prefix? "emacs-" name))
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(define (emacs-inputs inputs)
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"Retrieve the list of Emacs packages from INPUTS."
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(filter (match-lambda
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((label . directory)
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(emacs-package? ((compose package-name->name+version
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store-directory->name-version)
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directory)))
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(_ #f))
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inputs))
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(define (emacs-inputs-directories inputs)
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"Extract the list of Emacs package directories from INPUTS."
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(let ((inputs (emacs-inputs inputs)))
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(match inputs
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(((names . directories) ...) directories))))
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(define (emacs-inputs-el-directories dirs)
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"Build the list of Emacs Lisp directories from the Emacs package directory
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DIRS."
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(map (lambda (d)
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(string-append d %install-suffix "/"
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(store-directory->elpa-name-version d)))
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dirs))
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(define (package-name-version->elpa-name-version name-ver)
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"Convert the Guix package NAME-VER to the corresponding ELPA name-version
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format. Essnetially drop the prefix used in Guix."
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(let ((name (store-directory->name-version name-ver)))
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(if (emacs-package? name-ver)
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(store-directory->name-version name-ver)
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name-ver)))
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(define (store-directory->elpa-name-version store-dir)
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"Given a store directory STORE-DIR return the part of the basename after the
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second hyphen. This corresponds to 'name-version' as used in ELPA packages."
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((compose package-name-version->elpa-name-version
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store-directory->name-version)
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store-dir))
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(define (store-directory->name-version store-dir)
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"Given a store directory STORE-DIR return the part of the basename
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after the first hyphen. This corresponds to 'name-version' of the package."
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(let* ((base (basename store-dir)))
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(string-drop base
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(+ 1 (string-index base #\-)))))
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;; from (guix utils). Should we put it in (guix build utils)?
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(define (package-name->name+version name)
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"Given NAME, a package name like \"foo-0.9.1b\", return two values:
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\"foo\" and \"0.9.1b\". When the version part is unavailable, NAME and
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#f are returned. The first hyphen followed by a digit is considered to
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introduce the version part."
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;; See also `DrvName' in Nix.
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(define number?
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(cut char-set-contains? char-set:digit <>))
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(let loop ((chars (string->list name))
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(prefix '()))
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(match chars
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(()
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(values name #f))
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((#\- (? number? n) rest ...)
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(values (list->string (reverse prefix))
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(list->string (cons n rest))))
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((head tail ...)
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(loop tail (cons head prefix))))))
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(define %standard-phases
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(modify-phases gnu:%standard-phases
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(delete 'configure)
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(delete 'check)
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(delete 'install)
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(replace 'build build)
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(add-before 'build 'install install)
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(add-after 'install 'make-autoloads make-autoloads)
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(add-after 'make-autoloads 'patch-el-files patch-el-files)
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(add-after 'make-autoloads 'move-doc move-doc)))
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(define* (emacs-build #:key inputs (phases %standard-phases)
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#:allow-other-keys #:rest args)
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"Build the given Emacs package, applying all of PHASES in order."
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(apply gnu:gnu-build
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#:inputs inputs #:phases phases
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args))
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;;; emacs-build-system.scm ends here
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