build: Add node-build-system.

[jackhill/guix/guix.git] / doc / contributing.texi

diff --git a/doc/contributing.texi b/doc/contributing.texi
index 9459c48..e00634e 100644 (file)
--- a/doc/contributing.texi
+++ b/doc/contributing.texi
@@ -57,14 +57,14 @@ all the dependencies and appropriate environment variables are set up to
 hack on Guix:
 
 @example
-guix environment guix
+guix environment guix --pure
 @end example
 
 @xref{Invoking guix environment}, for more information on that command.
 Extra dependencies can be added with @option{--ad-hoc}:
 
 @example
-guix environment guix --ad-hoc help2man git strace
+guix environment guix --pure --ad-hoc help2man git strace
 @end example
 
 Run @command{./bootstrap} to generate the build system infrastructure
@@ -281,8 +281,7 @@ Once your package builds correctly, please send us a patch
 (@pxref{Submitting Patches}).  Well, if you need help, we will be happy to
 help you too.  Once the patch is committed in the Guix repository, the
 new package automatically gets built on the supported platforms by
-@url{http://hydra.gnu.org/jobset/gnu/master, our continuous integration
-system}.
+@url{@value{SUBSTITUTE-SERVER}, our continuous integration system}.
 
 @cindex substituter
 Users can obtain the new package definition simply by running
@@ -827,7 +826,7 @@ your @code{operating-system} configuration:
 @example
 (service qemu-binfmt-service-type
  (qemu-binfmt-configuration
-   (platforms (lookup-qemu-platforms "arm" "aarch64" "ppc" "mips64el"))
+   (platforms (lookup-qemu-platforms "arm" "aarch64" "mips64el"))
    (guix-support? #t)))
 @end example
 
@@ -835,12 +834,11 @@ Then reconfigure your system.
 
 You can then build packages for different platforms by specifying the
 @code{--system} option.  For example, to build the "hello" package for
-the armhf, aarch64, powerpc, or mips64 architectures, you would run the
-following commands, respectively:
+the armhf, aarch64, or mips64 architectures, you would run the following
+commands, respectively:
 @example
 guix build --system=armhf-linux --rounds=2 hello
 guix build --system=aarch64-linux --rounds=2 hello
-guix build --system=powerpc-linux --rounds=2 hello
 guix build --system=mips64el-linux --rounds=2 hello
 @end example
 
@@ -894,7 +892,7 @@ changes).  This branch is intended to be merged in @code{master} every
 2.5 months or so.
 @end table
 
-All these branches are @uref{https://hydra.gnu.org/project/gnu,
+All these branches are @uref{@value{SUBSTITUTE-SERVER},
 tracked by our build farm} and merged into @code{master} once
 everything has been successfully built.  This allows us to fix issues
 before they hit users, and to reduce the window during which pre-built