On Wed, Oct 28, 2015 at 7:14 AM, Ludovic Courtès <l...@gnu.org> wrote: > It’s now possible to really use multiple substitute servers, as in: > > guix build foo --substitute-urls='http://example.org http://hydra.gnu.org' > > Here Guix first looks for substitutes at example.org, and then falls > back to gnu.org for those that were not found. > > The basics were in place but commit 55b2fc1 adds the missing bits.
Awesome! One step closer to 'guix publish' being a generally useful tool. I'd like to run my own substitute server to provide some custom binaries while fetching everything else from hydra.gnu.org. > Unfortunately, due to <http://bugs.gnu.org/20217>, the daemon’s > --substitute-urls is overridden by clients, so you really have to pass > --substitute-urls to various ‘guix’ commands. > > Unfortunately², because URLs are whitespace-separated, one cannot put > the option in the ‘GUIX_BUILD_OPTIONS’ environment variable, because > that one is simply split up using ‘string-tokenize’. It will be a great day when these limitations are removed. Thanks! - Dave
