Commit Graph

3 Commits

Author SHA1 Message Date
Ludovic Courtès d46c4423f4
discovery: 'scheme-files' returns '() for a non-accessible directory.
Fixes a regression introduced in
d27cc3bfaa.

Reported by Ricardo Wurmus <rekado@elephly.net>.

* guix/discovery.scm (scheme-files): Catch 'scandir*' system errors.
Return '() and optionally raise a warning upon 'system-error'.
* tests/discovery.scm ("scheme-modules, non-existent directory"): New
test.
2017-06-18 00:14:07 +02:00
Ludovic Courtès d27cc3bfaa
discovery: Rewrite 'scheme-files' using 'scandir*'.
On a command like:

  guix environment --ad-hoc coreutils -- true

this reduces the number of 'stat' calls from 14.1K to 9.7K on my
setup (previously each getdents(2) call would be followed by one stat(2)
call per entry).

* guix/discovery.scm (scheme-files): Rewrite using 'scandir*'.
2017-06-16 17:08:22 +02:00
Ludovic Courtès cd903ef787
Add (guix discovery).
* guix/discovery.scm, tests/discovery.scm: New files.
* gnu/packages.scm (scheme-files, file-name->module-name)
(scheme-modules, all-package-modules): Remove.
(fold-packages): Rewrite in terms of 'fold-module-public-variables'.
* gnu/tests.scm: Use (guix discovery).
* Makefile.am (MODULES): Add guix/discovery.scm.
(SCM_TESTS): Add tests/discovery.scm.
2017-05-03 23:50:15 +02:00