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authorLudovic Courtès <ludo@gnu.org>2013-02-07 23:55:16 +0100
committerLudovic Courtès <ludo@gnu.org>2013-02-07 23:55:16 +0100
commit461572cca8655d0a7590309f557149e8d3405932 (patch)
treea7d7e61b771cb5850e335f2d4732761fdb9563d4 /doc/guix.texi
parentb39a48ad4bd4c902102d04f3255b24b3e7bd509a (diff)
downloadguix-461572cca8655d0a7590309f557149e8d3405932.tar
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doc: Document installation of propagated inputs.
* doc/guix.texi (Invoking guix-package): Document installation behavior with propagated inputs.
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diff --git a/doc/guix.texi b/doc/guix.texi
index 3fee24db50..9cb1431bf1 100644
--- a/doc/guix.texi
+++ b/doc/guix.texi
@@ -495,6 +495,16 @@ such as @code{guile-1.8.8}. In addition, @var{package} may contain a
colon, followed by the name of one of the outputs of the package, as in
@code{gcc:doc} or @code{binutils-2.22:lib}.
+@cindex propagated inputs
+Sometimes packages have @dfn{propagated inputs}: these are dependencies
+that automatically get installed along with the required package.
+
+An example is the GNU MPC library: its C header files refer to those of
+the GNU MPFR library, which in turn refer to those of the GMP library.
+Thus, when installing MPC, the MPFR and GMP libraries also get installed
+in the profile; removing MPC also removes MPFR and GMP---unless they had
+also been explicitly installed independently.
+
@item --remove=@var{package}
@itemx -r @var{package}
Remove @var{package}.