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authorFlorian Pelz <pelzflorian@pelzflorian.de>2020-09-16 15:18:08 +0200
committerFlorian Pelz <pelzflorian@pelzflorian.de>2020-09-18 09:03:38 +0000
commit125fc37e5f32afdbd1e5fca119c9eb41e7ad8ec1 (patch)
treebe954634b3668515c0f384c531b98155771ec0c7 /doc
parentde4705d92dd6c97abf9cca16023a35f0100a096d (diff)
downloadguix-125fc37e5f32afdbd1e5fca119c9eb41e7ad8ec1.tar
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doc: Clarify what propagated inputs are.
Fixes <https://bugs.gnu.org/26170>. * doc/guix.texi (package Reference)[package-propagated-inputs]: Clarify.
Diffstat (limited to 'doc')
-rw-r--r--doc/guix.texi17
1 files changed, 9 insertions, 8 deletions
diff --git a/doc/guix.texi b/doc/guix.texi
index 88128a4b3a..f7e2204b53 100644
--- a/doc/guix.texi
+++ b/doc/guix.texi
@@ -59,7 +59,7 @@ Copyright @copyright{} 2018 Oleg Pykhalov@*
Copyright @copyright{} 2018 Mike Gerwitz@*
Copyright @copyright{} 2018 Pierre-Antoine Rouby@*
Copyright @copyright{} 2018, 2019 Gábor Boskovits@*
-Copyright @copyright{} 2018, 2019 Florian Pelz@*
+Copyright @copyright{} 2018, 2019, 2020 Florian Pelz@*
Copyright @copyright{} 2018 Laura Lazzati@*
Copyright @copyright{} 2018 Alex Vong@*
Copyright @copyright{} 2019 Josh Holland@*
@@ -6370,21 +6370,22 @@ this area (@pxref{Invoking guix lint}).
@anchor{package-propagated-inputs}
Lastly, @code{propagated-inputs} is similar to @code{inputs}, but the
-specified packages will be automatically installed alongside the package
+specified packages will be automatically installed to profiles
+(@pxref{Features, the role of profiles in Guix}) alongside the package
they belong to (@pxref{package-cmd-propagated-inputs, @command{guix
package}}, for information on how @command{guix package} deals with
propagated inputs).
-For example this is necessary when a C/C++ library needs headers of
-another library to compile, or when a pkg-config file refers to another
-one @i{via} its @code{Requires} field.
+For example this is necessary when packaging a C/C++ library that needs
+headers of another library to compile, or when a pkg-config file refers
+to another one @i{via} its @code{Requires} field.
Another example where @code{propagated-inputs} is useful is for languages
that lack a facility to record the run-time search path akin to the
@code{RUNPATH} of ELF files; this includes Guile, Python, Perl, and
-more. To ensure that libraries written in those languages can find
-library code they depend on at run time, run-time dependencies must be
-listed in @code{propagated-inputs} rather than @code{inputs}.
+more. When packaging libraries written in those languages, ensure they
+can find library code they depend on at run time by listing run-time
+dependencies in @code{propagated-inputs} rather than @code{inputs}.
@item @code{outputs} (default: @code{'("out")})
The list of output names of the package. @xref{Packages with Multiple