A number of options that control the build process are common to
guix build and other commands that can spawn builds, such as
guix package or
guix archive. These are the following:
Add directory to the front of the package module search path (see 软件包模块).
This allows users to define their own packages and make them visible to the command-line tools.
Keep the build tree of failed builds. Thus, if a build fails, its build tree is kept under /tmp, in a directory whose name is shown at the end of the build log. This is useful when debugging build issues. See 调试构建错误, for tips and tricks on how to debug build issues.
This option implies --no-offload, and it has no effect when
connecting to a remote daemon with a
guix:// URI (see the
Keep going when some of the derivations fail to build; return only once all the builds have either completed or failed.
The default behavior is to stop as soon as one of the specified derivations has failed.
Do not build the derivations.
When substituting a pre-built binary fails, fall back to building packages locally (see substitute失败).
Consider urls the whitespace-separated list of substitute source URLs,
overriding the default list of URLs of
This means that substitutes may be downloaded from urls, provided they are signed by a key authorized by the system administrator (see substitutes).
When urls is the empty string, substitutes are effectively disabled.
Do not “graft” packages. In practice, this means that package updates available as grafts are not applied. See 安全更新, for more information on grafts.
Build each derivation n times in a row, and raise an error if consecutive build results are not bit-for-bit identical.
This is a useful way to detect non-deterministic builds processes.
Non-deterministic build processes are a problem because they make it
practically impossible for users to verify whether third-party
binaries are genuine. See Invoking
guix challenge, for more.
Do not use offload builds to other machines (see 使用任务下发设施). That is, always build things locally instead of offloading builds to remote machines.
By default, the daemon’s setting is honored (see --max-silent-time).
By default, the daemon’s setting is honored (see --timeout).
Use the given verbosity level, an integer. Choosing 0 means that no output is produced, 1 is for quiet output; 2 is similar to 1 but it additionally displays download URLs; 3 shows all the build log output on standard error.
Allow the use of up to n CPU cores for the build. The special value
0 means to use as many CPU cores as available.
Allow at most n build jobs in parallel. See --max-jobs, for details about this option and the equivalent
Produce debugging output coming from the build daemon. level must be an integer between 0 and 5; higher means more verbose output. Setting a level of 4 or more may be helpful when debugging setup issues with the build daemon.
Behind the scenes,
guix build is essentially an interface to the
package-derivation procedure of the
(guix packages) module,
and to the
build-derivations procedure of the
In addition to options explicitly passed on the command line,
build and other
guix commands that support building honor the
GUIX_BUILD_OPTIONS environment variable.
Users can define this variable to a list of command line options that will
automatically be used by
guix build and other
commands that can perform builds, as in the example below:
$ export GUIX_BUILD_OPTIONS="--no-substitutes -c 2 -L /foo/bar"
These options are parsed independently, and the result is appended to the parsed command-line options.