diff options
| -rw-r--r-- | guix/build/emacs-build-system.scm | 77 |
1 files changed, 76 insertions, 1 deletions
diff --git a/guix/build/emacs-build-system.scm b/guix/build/emacs-build-system.scm index ab77e57f33..6a6918bfdd 100644 --- a/guix/build/emacs-build-system.scm +++ b/guix/build/emacs-build-system.scm @@ -140,6 +140,79 @@ store in '.el' files." (substitute-program-names)))) #t)) +(define (find-root-library-file name) + (let loop ((parts (string-split + (package-name-version->elpa-name-version name) #\-)) + (candidate "")) + (cond + ;; at least one version part is given, so we don't terminate "early" + ((null? parts) #f) + ((string-null? candidate) (loop (cdr parts) (car parts))) + ((file-exists? (string-append candidate ".el")) candidate) + (else + (loop (cdr parts) (string-append candidate "-" (car parts))))))) + +(define* (ensure-package-description #:key outputs #:allow-other-keys) + (define (write-pkg-file name) + (define summary-regexp + "^;;; [^ ]*\\.el ---[ \t]*\\(.*?\\)[ \t]*\\(-\\*-.*-\\*-[ \t]*\\)?$") + (define %write-pkg-file-form + `(progn + (require 'lisp-mnt) + (require 'package) + + (defun build-package-desc-from-library (name) + (package-desc-from-define + name + ;; Workaround for malformed version string (for example "24 (beta)" + ;; in paredit.el), try to parse version obtained by lm-version, + ;; before trying to create package-desc. Otherwise the whole process + ;; of generation -pkg.el will fail. + (condition-case + nil + (let ((version (lm-version))) + ;; raises an error if version is invalid + (and (version-to-list version) version)) + (error "0.0.0")) + (or (save-excursion + (goto-char (point-min)) + (and (re-search-forward ,summary-regexp nil t) + (match-string-no-properties 1))) + package--default-summary) + (let ((require-lines (lm-header-multiline "package-requires"))) + (and require-lines + (package--prepare-dependencies + (package-read-from-string + (mapconcat 'identity require-lines " "))))) + :kind 'single + :url (lm-homepage) + :keywords (lm-keywords-list) + :maintainer (lm-maintainer) + :authors (lm-authors))) + + (defun generate-package-description-file (name) + (package-generate-description-file + (build-package-desc-from-library name) + (concat name "-pkg.el"))) + + (condition-case + err + (let ((name (file-name-base (buffer-file-name)))) + (generate-package-description-file name) + (message (concat name "-pkg.el file generated."))) + (error + (message "There are some errors during generation of -pkg.el file:") + (message "%s" (error-message-string err)))))) + + (unless (file-exists? (string-append name "-pkg.el")) + (emacs-batch-edit-file (string-append name ".el") + %write-pkg-file-form))) + + (let* ((out (assoc-ref outputs "out")) + (elpa-name-ver (store-directory->elpa-name-version out))) + (with-directory-excursion (elpa-directory out) + (and=> (find-root-library-file elpa-name-ver) write-pkg-file)))) + (define* (check #:key tests? (test-command '("make" "check")) (parallel-tests? #t) #:allow-other-keys) "Run the tests by invoking TEST-COMMAND. @@ -279,8 +352,10 @@ for libraries following the ELPA convention." (add-after 'make-autoloads 'enable-autoloads-compilation enable-autoloads-compilation) (add-after 'enable-autoloads-compilation 'patch-el-files patch-el-files) + (add-after 'patch-el-files 'ensure-package-description + ensure-package-description) ;; The .el files are byte compiled directly in the store. - (add-after 'patch-el-files 'build build) + (add-after 'ensure-package-description 'build build) (add-after 'build 'validate-compiled-autoloads validate-compiled-autoloads) (add-after 'validate-compiled-autoloads 'move-doc move-doc))) |