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To allow Guix to download substitutes from ci.guix.gnu.org
or a
mirror thereof, you
must add its public key to the access control list (ACL) of archive
imports, using the guix archive
command (see Invoking guix archive). Doing so implies that you trust ci.guix.gnu.org
to not
be compromised and to serve genuine substitutes.
Note: If you are using Guix System, you can skip this section: Guix System authorizes substitutes from
ci.guix.gnu.org
by default.
The public key for ci.guix.gnu.org
is installed along with Guix, in
prefix/share/guix/ci.guix.gnu.org.pub
, where prefix is
the installation prefix of Guix. If you installed Guix from source,
make sure you checked the GPG signature of
guix-1.2.0.tar.gz, which contains this public key file.
Then, you can run something like this:
# guix archive --authorize < prefix/share/guix/ci.guix.gnu.org.pub
Once this is in place, the output of a command like guix build
should change from something like:
$ guix build emacs --dry-run The following derivations would be built: /gnu/store/yr7bnx8xwcayd6j95r2clmkdl1qh688w-emacs-24.3.drv /gnu/store/x8qsh1hlhgjx6cwsjyvybnfv2i37z23w-dbus-1.6.4.tar.gz.drv /gnu/store/1ixwp12fl950d15h2cj11c73733jay0z-alsa-lib-1.0.27.1.tar.bz2.drv /gnu/store/nlma1pw0p603fpfiqy7kn4zm105r5dmw-util-linux-2.21.drv …
to something like:
$ guix build emacs --dry-run 112.3 MB would be downloaded: /gnu/store/pk3n22lbq6ydamyymqkkz7i69wiwjiwi-emacs-24.3 /gnu/store/2ygn4ncnhrpr61rssa6z0d9x22si0va3-libjpeg-8d /gnu/store/71yz6lgx4dazma9dwn2mcjxaah9w77jq-cairo-1.12.16 /gnu/store/7zdhgp0n1518lvfn8mb96sxqfmvqrl7v-libxrender-0.9.7 …
The text changed from “The following derivations would be built” to
“112.3 MB would be downloaded”. This indicates that substitutes from
ci.guix.gnu.org
are usable and will be downloaded, when
possible, for future builds.
The substitute mechanism can be disabled globally by running
guix-daemon
with --no-substitutes (see Invoking guix-daemon). It can also be disabled temporarily by passing the
--no-substitutes option to guix package
,
guix build
, and other command-line tools.
Next: Getting Substitutes from Other Servers, Previous: Official Substitute Server, Up: Substitutes [Contents][Index]