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build: ruby: Add support for tarball and directory sources.

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Previously, the Ruby build system only knew how to work with gem archives,
which made it difficult to build unreleased gems from a Git repository or
released gems in tarball form.

* gnu/build/ruby-build-system.scm (gnu:unpack, gem-archive?): New procedures.
  (unpack): Use GNU build system unpack phase for non-gem sources.
  (build): Rebuild the gemspec iff the source is a gem archive.
* guix.texi ("ruby-build-system"): Mention that tarballs and directories are
  acceptable.
This commit is contained in:
David Thompson 2015-09-07 22:58:05 -04:00
parent 27cc9f2544
commit 5dc876231b
2 changed files with 52 additions and 41 deletions
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13
doc/guix.texi
View file

@ -2506,12 +2506,13 @@ This variable is exported by @code{(guix build-system ruby)}. It
implements the RubyGems build procedure used by Ruby packages, which
involves running @code{gem build} followed by @code{gem install}.
The @code{source} field of a package that uses this build system is
expected to reference a gem archive instead of a traditional tarball,
since this is the format that all Ruby developers use when releasing
their software. The build system unpacks the gem archive, potentially
patches the source, runs the test suite, repackages the gem, and
installs it.
The @code{source} field of a package that uses this build system
typically references a gem archive, since this is the format that Ruby
developers use when releasing their software. The build system unpacks
the gem archive, potentially patches the source, runs the test suite,
repackages the gem, and installs it. Additionally, directories and
tarballs may be referenced to allow building unreleased gems from Git or
a traditional source release tarball.
Which Ruby package is used can be specified with the @code{#:ruby}
parameter. A list of additional flags to be passed to the @command{gem}

30
guix/build/ruby-build-system.scm
View file

@ -41,29 +41,39 @@ (define (first-matching-file pattern)
((file-name . _) file-name)
(() (error "No files matching pattern: " pattern))))
(define gnu:unpack (assq-ref gnu:%standard-phases 'unpack))
(define (gem-archive? file-name)
(string-match "^.*\\.gem$" file-name))
(define* (unpack #:key source #:allow-other-keys)
"Unpack the gem SOURCE and enter the resulting directory."
(if (gem-archive? source)
(and (zero? (system* "gem" "unpack" source))
;; The unpacked gem directory is named the same as the archive, sans
;; the ".gem" extension. It is renamed to simply "gem" in an effort to
;; keep file names shorter to avoid UNIX-domain socket file names and
;; shebangs that exceed the system's fixed maximum length when running
;; test suites.
;; The unpacked gem directory is named the same as the archive,
;; sans the ".gem" extension. It is renamed to simply "gem" in an
;; effort to keep file names shorter to avoid UNIX-domain socket
;; file names and shebangs that exceed the system's fixed maximum
;; length when running test suites.
(let ((dir (match:substring (string-match "^(.*)\\.gem$"
(basename source))
1)))
(rename-file dir "gem")
(chdir "gem")
#t)))
#t))
;; Use GNU unpack strategy for things that aren't gem archives.
(gnu:unpack #:source source)))
(define* (build #:key source #:allow-other-keys)
"Build a new gem using the gemspec from the SOURCE gem."
(define (first-gemspec)
(first-matching-file "\\.gemspec$"))
;; Remove the original gemspec, if present, and replace it with a new one.
;; This avoids issues with upstream gemspecs requiring tools such as git to
;; generate the files list.
(let ((gemspec (or (false-if-exception
(first-matching-file "\\.gemspec$"))
(when (gem-archive? source)
(let ((gemspec (or (false-if-exception (first-gemspec))
;; Make new gemspec if one wasn't shipped.
".gemspec")))
@ -82,12 +92,12 @@ (define* (build #:key source #:allow-other-keys)
(write-char (read-char pipe) out))))
#t)
(lambda ()
(close-pipe pipe))))
(close-pipe pipe))))))
;; Build a new gem from the current working directory. This also allows any
;; dynamic patching done in previous phases to be present in the installed
;; gem.
(zero? (system* "gem" "build" gemspec))))
(zero? (system* "gem" "build" (first-gemspec))))
(define* (check #:key tests? test-target #:allow-other-keys)
"Run the gem's test suite rake task TEST-TARGET. Skip the tests if TESTS?