nixo
/
guix-devel
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

doc: Document fixed-output derivations. 

* doc/guix.texi (Derivations): Add paragraph on fixed-output
derivations.
This commit is contained in:
Ludovic Courtès 2017-12-21 22:12:00 +01:00
parent a468f89743
commit 8785bd7759
No known key found for this signature in database
GPG Key ID: 090B11993D9AEBB5
1 changed files with 8 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
doc/guix.texi
View File

@ -4210,6 +4210,14 @@ paths}. Derivations paths can be passed to the @code{build-derivations}
procedure to perform the build actions they prescribe (@pxref{The procedure to perform the build actions they prescribe (@pxref{The
Store}). Store}).
@cindex fixed-output derivations
Operations such as file downloads and version-control checkouts for
which the expected content hash is known in advance are modeled as
@dfn{fixed-output derivations}. Unlike regular derivations, the outputs
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.
The @code{(guix derivations)} module provides a representation of The @code{(guix derivations)} module provides a representation of
derivations as Scheme objects, along with procedures to create and derivations as Scheme objects, along with procedures to create and
otherwise manipulate derivations. The lowest-level primitive to create otherwise manipulate derivations. The lowest-level primitive to create