guix build: Allow gexps to be passed to '-e'.

[jackhill/guix/guix.git] / doc / guix.texi

diff --git a/doc/guix.texi b/doc/guix.texi
index c1e51ea..c14272e 100644 (file)
--- a/doc/guix.texi
+++ b/doc/guix.texi
@@ -2244,7 +2244,11 @@ For example, @var{expr} may be @code{(@@ (gnu packages guile)
 guile-1.8)}, which unambiguously designates this specific variant of
 version 1.8 of Guile.
 
-Alternately, @var{expr} may refer to a zero-argument monadic procedure
+Alternately, @var{expr} may be a G-expression, in which case it is used
+as a build program passed to @code{gexp->derivation}
+(@pxref{G-Expressions}).
+
+Lastly, @var{expr} may refer to a zero-argument monadic procedure
 (@pxref{The Store Monad}).  The procedure must return a derivation as a
 monadic value, which is then passed through @code{run-with-store}.