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Diffstat (limited to 'guix/build/emacs-build-system.scm')
| -rw-r--r-- | guix/build/emacs-build-system.scm | 200 |
1 files changed, 200 insertions, 0 deletions
diff --git a/guix/build/emacs-build-system.scm b/guix/build/emacs-build-system.scm new file mode 100644 index 0000000000..dd3cfc47ac --- /dev/null +++ b/guix/build/emacs-build-system.scm @@ -0,0 +1,200 @@ +;;; GNU Guix --- Functional package management for GNU +;;; Copyright © 2015 Federico Beffa <beffa@fbengineering.ch> +;;; +;;; This file is part of GNU Guix. +;;; +;;; GNU Guix 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. +;;; +;;; GNU Guix 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 GNU Guix. If not, see <http://www.gnu.org/licenses/>. + +(define-module (guix build emacs-build-system) + #:use-module ((guix build gnu-build-system) #:prefix gnu:) + #:use-module (guix build utils) + #:use-module (guix build emacs-utils) + #:use-module (srfi srfi-1) + #:use-module (srfi srfi-26) + #:use-module (ice-9 rdelim) + #:use-module (ice-9 regex) + #:use-module (ice-9 match) + #:export (%standard-phases + emacs-build)) + +;; Commentary: +;; +;; Builder-side code of the build procedure for ELPA Emacs packages. +;; +;; Code: + +;; Directory suffix where we install ELPA packages. We avoid ".../elpa" as +;; Emacs expects to find the ELPA repository 'archive-contents' file and the +;; archive signature. +(define %install-suffix "/share/emacs/site-lisp/guix.d") + +(define* (build #:key outputs inputs #:allow-other-keys) + "Compile .el files." + (let* ((emacs (string-append (assoc-ref inputs "emacs") "/bin/emacs")) + (out (assoc-ref outputs "out")) + (elpa-name-ver (store-directory->elpa-name-version out)) + (el-dir (string-append out %install-suffix "/" elpa-name-ver)) + (deps-dirs (emacs-inputs-directories inputs))) + (setenv "SHELL" "sh") + (parameterize ((%emacs emacs)) + (emacs-byte-compile-directory el-dir + (emacs-inputs-el-directories deps-dirs))))) + +(define* (patch-el-files #:key outputs #:allow-other-keys) + "Substitute the absolute \"/bin/\" directory with the right location in the +store in '.el' files." + (let* ((out (assoc-ref outputs "out")) + (elpa-name-ver (store-directory->elpa-name-version out)) + (el-dir (string-append out %install-suffix "/" elpa-name-ver)) + (substitute-cmd (lambda () + (substitute* (find-files "." "\\.el$") + (("\"/bin/(.*)\"" _ cmd) + (string-append "\"" (which cmd) "\"")))))) + (with-directory-excursion el-dir + ;; Some old '.el' files (e.g., tex-buf.el in AUCTeX) are still encoded + ;; with the "ISO-8859-1" locale. + (unless (false-if-exception (substitute-cmd)) + (with-fluids ((%default-port-encoding "ISO-8859-1")) + (substitute-cmd)))) + #t)) + +(define* (install #:key outputs #:allow-other-keys) + "Install the package contents." + (let* ((out (assoc-ref outputs "out")) + (elpa-name-ver (store-directory->elpa-name-version out)) + (src-dir (getcwd)) + (tgt-dir (string-append out %install-suffix "/" elpa-name-ver))) + (copy-recursively src-dir tgt-dir) + #t)) + +(define* (move-doc #:key outputs #:allow-other-keys) + "Move info files from the ELPA package directory to the info directory." + (let* ((out (assoc-ref outputs "out")) + (elpa-name-ver (store-directory->elpa-name-version out)) + (el-dir (string-append out %install-suffix "/" elpa-name-ver)) + (name-ver (store-directory->name-version out)) + (info-dir (string-append out "/share/info/" name-ver)) + (info-files (find-files el-dir "\\.info$"))) + (unless (null? info-files) + (mkdir-p info-dir) + (with-directory-excursion el-dir + (when (file-exists? "dir") (delete-file "dir")) + (for-each (lambda (f) + (copy-file f (string-append info-dir "/" (basename f))) + (delete-file f)) + info-files))) + #t)) + +(define* (make-autoloads #:key outputs inputs #:allow-other-keys) + "Generate the autoloads file." + (let* ((emacs (string-append (assoc-ref inputs "emacs") "/bin/emacs")) + (out (assoc-ref outputs "out")) + (elpa-name-ver (store-directory->elpa-name-version out)) + (elpa-name (package-name->name+version elpa-name-ver)) + (el-dir (string-append out %install-suffix "/" elpa-name-ver))) + (parameterize ((%emacs emacs)) + (emacs-generate-autoloads elpa-name el-dir)) + #t)) + +(define (emacs-package? name) + "Check if NAME correspond to the name of an Emacs package." + (string-prefix? "emacs-" name)) + +(define (emacs-inputs inputs) + "Retrieve the list of Emacs packages from INPUTS." + (filter (match-lambda + ((label directory) + (emacs-package? ((compose package-name->name+version + store-directory->name-version) + directory))) + (_ #f)) + inputs)) + +(define (emacs-inputs-directories inputs) + "Extract the list of Emacs package directories from INPUTS." + (let ((inputs (emacs-inputs inputs))) + (match inputs + (((names . directories) ...) directories)))) + +(define (emacs-inputs-el-directories dirs) + "Build the list of Emacs Lisp directories from the Emacs package directory +DIRS." + (map (lambda (d) + (string-append d %install-suffix "/" + (store-directory->elpa-name-version d))) + dirs)) + +(define (package-name-version->elpa-name-version name-ver) + "Convert the Guix package NAME-VER to the corresponding ELPA name-version +format. Essnetially drop the prefix used in Guix." + (let ((name (store-directory->name-version name-ver))) + (if (emacs-package? name-ver) + (store-directory->name-version name-ver) + name-ver))) + +(define (store-directory->elpa-name-version store-dir) + "Given a store directory STORE-DIR return the part of the basename after the +second hyphen. This corresponds to 'name-version' as used in ELPA packages." + ((compose package-name-version->elpa-name-version + store-directory->name-version) + store-dir)) + +(define (store-directory->name-version store-dir) + "Given a store directory STORE-DIR return the part of the basename +after the first hyphen. This corresponds to 'name-version' of the package." + (let* ((base (basename store-dir))) + (string-drop base + (+ 1 (string-index base #\-))))) + +;; from (guix utils). Should we put it in (guix build utils)? +(define (package-name->name+version name) + "Given NAME, a package name like \"foo-0.9.1b\", return two values: +\"foo\" and \"0.9.1b\". When the version part is unavailable, NAME and +#f are returned. The first hyphen followed by a digit is considered to +introduce the version part." + ;; See also `DrvName' in Nix. + + (define number? + (cut char-set-contains? char-set:digit <>)) + + (let loop ((chars (string->list name)) + (prefix '())) + (match chars + (() + (values name #f)) + ((#\- (? number? n) rest ...) + (values (list->string (reverse prefix)) + (list->string (cons n rest)))) + ((head tail ...) + (loop tail (cons head prefix)))))) + +(define %standard-phases + (modify-phases gnu:%standard-phases + (delete 'configure) + (delete 'check) + (delete 'install) + (replace 'build build) + (add-before 'build 'install install) + (add-after 'install 'make-autoloads make-autoloads) + (add-after 'make-autoloads 'patch-el-files patch-el-files) + (add-after 'make-autoloads 'move-doc move-doc))) + +(define* (emacs-build #:key inputs (phases %standard-phases) + #:allow-other-keys #:rest args) + "Build the given Emacs package, applying all of PHASES in order." + (apply gnu:gnu-build + #:inputs inputs #:phases phases + args)) + +;;; emacs-build-system.scm ends here |