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Diffstat (limited to 'doc/guix.texi')
| -rw-r--r-- | doc/guix.texi | 34 |
1 files changed, 32 insertions, 2 deletions
diff --git a/doc/guix.texi b/doc/guix.texi index 1b77881eb6..11ce9d6f62 100644 --- a/doc/guix.texi +++ b/doc/guix.texi @@ -4777,6 +4777,23 @@ symlink target. For instance, @code{-S /opt/gnu/bin=bin} creates a @file{/opt/gnu/bin} symlink pointing to the @file{bin} sub-directory of the profile. +@item --save-provenance +Save provenance information for the packages passed on the command line. +Provenance information includes the URL and commit of the channels in use +(@pxref{Channels}). + +Provenance information is saved in the +@file{/gnu/store/@dots{}-profile/manifest} file in the pack, along with the +usual package metadata---the name and version of each package, their +propagated inputs, and so on. It is useful information to the recipient of +the pack, who then knows how the pack was (supposedly) obtained. + +This option is not enabled by default because, like timestamps, provenance +information contributes nothing to the build process. In other words, there +is an infinity of channel URLs and commit IDs that can lead to the same pack. +Recording such ``silent'' metadata in the output thus potentially breaks the +source-to-binary bitwise reproducibility property. + @item --localstatedir @itemx --profile-name=@var{name} Include the ``local state directory'', @file{/var/guix}, in the resulting @@ -6221,8 +6238,11 @@ The outputs of the derivation---derivations produce at least one file or directory in the store, but may produce more. @item -The inputs of the derivations, which may be other derivations or plain -files in the store (patches, build scripts, etc.) +@cindex build-time dependencies +@cindex dependencies, build-time +The inputs of the derivations---i.e., its build-time dependencies---which may +be other derivations or plain files in the store (patches, build scripts, +etc.) @item The system type targeted by the derivation---e.g., @code{x86_64-linux}. @@ -6253,6 +6273,16 @@ of a fixed-output derivation are independent of its inputs---e.g., a source code download produces the same result regardless of the download method and tools being used. +@cindex references +@cindex run-time dependencies +@cindex dependencies, run-time +The outputs of derivations---i.e., the build results---have a set of +@dfn{references}, as reported by the @code{references} RPC or the +@command{guix gc --references} command (@pxref{Invoking guix gc}). References +are the set of run-time dependencies of the build results. References are a +subset of the inputs of the derivation; this subset is automatically computed +by the build daemon by scanning all the files in the outputs. + The @code{(guix derivations)} module provides a representation of derivations as Scheme objects, along with procedures to create and otherwise manipulate derivations. The lowest-level primitive to create |