diff options
| -rw-r--r-- | doc/contributing.texi | 18 | ||||
| -rw-r--r-- | doc/guix.texi | 60 | ||||
| -rwxr-xr-x | etc/indent-code.el | 120 | ||||
| -rw-r--r-- | guix/scripts/style.scm | 43 | ||||
| -rw-r--r-- | tests/style.scm | 17 |
5 files changed, 111 insertions, 147 deletions
diff --git a/doc/contributing.texi b/doc/contributing.texi index 72f5ce1e0e..9f97788c0b 100644 --- a/doc/contributing.texi +++ b/doc/contributing.texi @@ -959,17 +959,11 @@ If you do not use Emacs, please make sure to let your editor knows these rules. To automatically indent a package definition, you can also run: @example -./etc/indent-code.el gnu/packages/@var{file}.scm @var{package} +./pre-inst-env guix style @var{package} @end example @noindent -This automatically indents the definition of @var{package} in -@file{gnu/packages/@var{file}.scm} by running Emacs in batch mode. To -indent a whole file, omit the second argument: - -@example -./etc/indent-code.el gnu/services/@var{file}.scm -@end example +@xref{Invoking guix style}, for more information. @cindex Vim, Scheme code editing If you are editing code with Vim, we recommend that you run @code{:set @@ -1039,6 +1033,10 @@ name of the new or modified package, and fix any errors it reports (@pxref{Invoking guix lint}). @item +Run @code{guix style @var{package}} to format the new package definition +according to the project's conventions (@pxref{Invoking guix style}). + +@item Make sure the package builds on your platform, using @code{guix build @var{package}}. @@ -1175,8 +1173,8 @@ Examples of unrelated changes include the addition of several packages, or a package update along with fixes to that package. @item -Please follow our code formatting rules, possibly running the -@command{etc/indent-code.el} script to do that automatically for you +Please follow our code formatting rules, possibly running +@command{guix style} script to do that automatically for you (@pxref{Formatting Code}). @item diff --git a/doc/guix.texi b/doc/guix.texi index 601212fb45..7ffb0d738c 100644 --- a/doc/guix.texi +++ b/doc/guix.texi @@ -12785,8 +12785,16 @@ otherwise. The @command{guix style} command helps packagers style their package definitions according to the latest fashionable trends. The command -currently focuses on one aspect: the style of package inputs. It may -eventually be extended to handle other stylistic matters. +currently provides the providing styling rules: + +@itemize +@item +formatting package definitions according to the project's conventions +(@pxref{Formatting Code}); + +@item +rewriting package inputs to the ``new style'', as explained below. +@end itemize The way package inputs are written is going through a transition (@pxref{package Reference}, for more on package inputs). Until version @@ -12817,7 +12825,7 @@ Package Variants}, for more info on @code{modify-inputs}). In the vast majority of cases, this is a purely mechanical change on the surface syntax that does not even incur a package rebuild. Running -@command{guix style} can do that for you, whether you're working on +@command{guix style -S inputs} can do that for you, whether you're working on packages in Guix proper or in an external channel. The general syntax is: @@ -12827,15 +12835,48 @@ guix style [@var{options}] @var{package}@dots{} @end example This causes @command{guix style} to analyze and rewrite the definition -of @var{package}@dots{}. It does so in a conservative way: preserving -comments and bailing out if it cannot make sense of the code that -appears in an inputs field. The available options are listed below. +of @var{package}@dots{} or, when @var{package} is omitted, of @emph{all} +the packages. The @option{--styling} or @option{-S} option allows you +to select the style rule, the default rule being @code{format}---see +below. + +The available options are listed below. @table @code @item --dry-run @itemx -n Show source file locations that would be edited but do not modify them. +@item --styling=@var{rule} +@itemx -S @var{rule} +Apply @var{rule}, one of the following styling rules: + +@table @code +@item format +Format the given package definition(s)---this is the default styling +rule. For example, a packager running Guix on a checkout +(@pxref{Running Guix Before It Is Installed}) might want to reformat the +definition of the Coreutils package like so: + +@example +./pre-inst-env guix style coreutils +@end example + +@item inputs +Rewrite package inputs to the ``new style'', as described above. This +is how you would rewrite inputs of package @code{whatnot} in your own +channel: + +@example +guix style -L ~/my/channel -S inputs whatnot +@end example + +Rewriting is done in a conservative way: preserving comments and bailing +out if it cannot make sense of the code that appears in an inputs field. +The @option{--input-simplification} option described below provides +fine-grain control over when inputs should be simplified. +@end table + @item --load-path=@var{directory} @itemx -L @var{directory} Add @var{directory} to the front of the package module search path @@ -12854,9 +12895,10 @@ guix style -e '(@@ (gnu packages gcc) gcc-5)' styles the @code{gcc-5} package definition. @item --input-simplification=@var{policy} -Specify the package input simplification policy for cases where an input -label does not match the corresponding package name. @var{policy} may -be one of the following: +When using the @code{inputs} styling rule, with @samp{-S inputs}, this +option specifies the package input simplification policy for cases where +an input label does not match the corresponding package name. +@var{policy} may be one of the following: @table @code @item silent diff --git a/etc/indent-code.el b/etc/indent-code.el deleted file mode 100755 index bdea8ee8bf..0000000000 --- a/etc/indent-code.el +++ /dev/null @@ -1,120 +0,0 @@ -:;exec emacs --batch --quick --load="$0" --funcall=main "$@" -;;; indent-code.el --- Run Emacs to indent a package definition. - -;; Copyright © 2017 Alex Kost <alezost@gmail.com> -;; Copyright © 2017 Ludovic Courtès <ludo@gnu.org> -;; Copyright © 2020 Maxim Cournoyer <maxim.cournoyer@gmail.com> -;; Copyright © 2020 Tobias Geerinckx-Rice <me@tobias.gr> - -;; 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 this program. If not, see <http://www.gnu.org/licenses/>. - -;;; Commentary: - -;; This scripts indents the given file or package definition in the specified -;; file using Emacs. - -;;; Code: - -;; Load Scheme indentation rules from ".dir-locals.el". -(with-temp-buffer - (scheme-mode) - (let ((default-directory (file-name-as-directory load-file-name)) - (enable-local-variables :all)) - (hack-dir-local-variables) - (hack-local-variables-apply))) - -;; Add indentation info for Scheme constructs that are not Guix-specific. -;; This is normally provided by Geiser but this file is for people who may not -;; be running Geiser, so we just copy it here (from 'geiser-syntax.el'). -(defmacro guix-syntax--scheme-indent (&rest pairs) - `(progn ,@(mapcar (lambda (p) - `(put ',(car p) 'scheme-indent-function ',(cadr p))) - pairs))) - -(guix-syntax--scheme-indent - (and-let* 1) - (case-lambda 0) - (catch defun) - (class defun) - (dynamic-wind 0) - (guard 1) - (let*-values 1) - (let-values 1) - (let/ec 1) - (letrec* 1) - (match 1) - (match-lambda 0) - (match-lambda* 0) - (match-let scheme-let-indent) - (match-let* 1) - (match-letrec 1) - (opt-lambda 1) - (parameterize 1) - (parameterize* 1) - (receive 2) - (require-extension 0) - (syntax-case 2) - (test-approximate 1) - (test-assert 1) - (test-eq 1) - (test-equal 1) - (test-eqv 1) - (test-group-with-cleanup 1) - (test-runner-on-bad-count! 1) - (test-runner-on-bad-end-name! 1) - (test-runner-on-final! 1) - (test-runner-on-group-begin! 1) - (test-runner-on-group-end! 1) - (test-runner-on-test-begin! 1) - (test-runner-on-test-end! 1) - (test-with-runner 1) - (unless 1) - (when 1) - (while 1) - (with-exception-handler 1) - (with-syntax 1)) - - -(defun main () - (pcase command-line-args-left - (`(,file-name ,package-name) - ;; Indent the definition of PACKAGE-NAME in FILE-NAME. - (find-file file-name) - (goto-char (point-min)) - (if (re-search-forward (concat "^(define\\(\\|-public\\) +" - package-name) - nil t) - (let ((indent-tabs-mode nil)) - (beginning-of-defun) - (mark-sexp) - (untabify (point) (mark)) - (indent-sexp) - (save-buffer) - (message "Done!")) - (error "Package '%s' not found in '%s'" - package-name file-name))) - (`(,file-name) - ;; Indent all of FILE-NAME. - (find-file file-name) - (let ((indent-tabs-mode nil)) - (untabify (point-min) (point-max)) - (indent-region (point-min) (point-max)) - (save-buffer) - (message "Done!"))) - (x - (error "Usage: indent-code.el FILE [PACKAGE]")))) - -;;; indent-code.el ends here diff --git a/guix/scripts/style.scm b/guix/scripts/style.scm index 09c239498f..85e66fe1a6 100644 --- a/guix/scripts/style.scm +++ b/guix/scripts/style.scm @@ -686,6 +686,29 @@ PACKAGE." (list package-inputs package-native-inputs package-propagated-inputs))) + +;;; +;;; Formatting package definitions. +;;; + +(define* (format-package-definition package + #:key policy + (edit-expression edit-expression)) + "Reformat the definition of PACKAGE." + (unless (package-definition-location package) + (leave (package-location package) + (G_ "no definition location for package ~a~%") + (package-full-name package))) + + (edit-expression + (location->source-properties (package-definition-location package)) + (lambda (str) + (let ((exp (call-with-input-string str + read-with-comments))) + (object->string* exp + (location-column + (package-definition-location package))))))) + (define (package-location<? p1 p2) "Return true if P1's location is \"before\" P2's." (let ((loc1 (package-location p1)) @@ -712,6 +735,15 @@ PACKAGE." (option '(#\e "expression") #t #f (lambda (opt name arg result) (alist-cons 'expression arg result))) + (option '(#\S "styling") #t #f + (lambda (opt name arg result) + (alist-cons 'styling-procedure + (match arg + ("inputs" simplify-package-inputs) + ("format" format-package-definition) + (_ (leave (G_ "~a: unknown styling~%") + arg))) + result))) (option '("input-simplification") #t #f (lambda (opt name arg result) (let ((symbol (string->symbol arg))) @@ -733,6 +765,9 @@ PACKAGE." (display (G_ "Usage: guix style [OPTION]... [PACKAGE]... Update package definitions to the latest style.\n")) (display (G_ " + -S, --styling=RULE apply RULE, a styling rule")) + (newline) + (display (G_ " -n, --dry-run display files that would be edited but do nothing")) (display (G_ " -L, --load-path=DIR prepend DIR to the package module search path")) @@ -752,7 +787,8 @@ Update package definitions to the latest style.\n")) (define %default-options ;; Alist of default option values. - '((input-simplification-policy . silent))) + `((input-simplification-policy . silent) + (styling-procedure . ,format-package-definition))) ;;; @@ -779,11 +815,12 @@ Update package definitions to the latest style.\n")) (edit (if (assoc-ref opts 'dry-run?) edit-expression/dry-run edit-expression)) + (style (assoc-ref opts 'styling-procedure)) (policy (assoc-ref opts 'input-simplification-policy))) (with-error-handling (for-each (lambda (package) - (simplify-package-inputs package #:policy policy - #:edit-expression edit)) + (style package #:policy policy + #:edit-expression edit)) ;; Sort package by source code location so that we start editing ;; files from the bottom and going upward. That way, the ;; 'location' field of <package> records is not invalidated as diff --git a/tests/style.scm b/tests/style.scm index 8022688419..7dae543860 100644 --- a/tests/style.scm +++ b/tests/style.scm @@ -78,7 +78,8 @@ (string-append directory "/my-packages.scm")) ;; Run as a separate process to make sure FILE is reloaded. - (system* "guix" "style" "-L" directory "my-coreutils") + (system* "guix" "style" "-L" directory "-S" "inputs" + "my-coreutils") (system* "cat" file) (load file) @@ -237,6 +238,7 @@ (string-append directory "/my-packages.scm")) (system* "guix" "style" "-L" directory "my-coreutils" + "-S" "inputs" "--input-simplification=safe") (load file) @@ -258,6 +260,7 @@ (string-append directory "/my-packages.scm")) (system* "guix" "style" "-L" directory "my-coreutils" + "-S" "inputs" "--input-simplification=safe") (load file) @@ -284,7 +287,8 @@ " ;another one\n"))) (system* "cat" file) - (system* "guix" "style" "-L" directory "my-coreutils") + (system* "guix" "style" "-L" directory "-S" "inputs" + "my-coreutils") (load file) (list (package-inputs (@ (my-packages) my-coreutils)) @@ -317,7 +321,8 @@ " ;margin comment\n"))) (system* "cat" file) - (system* "guix" "style" "-L" directory "my-coreutils") + (system* "guix" "style" "-L" directory "-S" "inputs" + "my-coreutils") (load file) (list (package-inputs (@ (my-packages) my-coreutils)) @@ -338,7 +343,8 @@ ((",gmp\\)(.*)$" _ rest) (string-append ",gmp)\n ;; line comment!\n" rest))) - (system* "guix" "style" "-L" directory "my-coreutils") + (system* "guix" "style" "-L" directory "-S" "inputs" + "my-coreutils") (load file) (list (package-inputs (@ (my-packages) my-coreutils)) @@ -364,7 +370,8 @@ ((",acl\\)(.*)$" _ rest) (string-append ",acl) ;another one\n" rest))) - (system* "guix" "style" "-L" directory "my-coreutils") + (system* "guix" "style" "-L" directory "-S" "inputs" + "my-coreutils") (load file) (list (package-inputs (@ (my-packages) my-coreutils)) |