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authorLudovic Courtès <ludo@gnu.org>2013-11-18 23:08:20 +0100
committerLudovic Courtès <ludo@gnu.org>2013-11-18 23:08:20 +0100
commitac5de156ae5de8cb61870469863fb862b6a1205e (patch)
treeb1c13b61c7d3a66e1879f4b3eca28ae8f471e970 /doc
parente900c5031f4ecf5ac3f131a908a2616871793f8c (diff)
guix build: '-e' can be passed a monadic thunk.
* guix/ui.scm (read/eval): New procedure. (read/eval-package-expression): Use it. * guix/scripts/build.scm (derivations-from-package-expressions): Rename to... (derivation-from-expression): ... this. Accept procedures, under the assumption that they are monadic thunk. (show-help): Adjust accordingly. (guix-build): Ditto. * tests/guix-build.sh: Add test. * doc/guix.texi (Invoking guix build): Augment description of '-e'.
Diffstat (limited to 'doc')
-rw-r--r--doc/guix.texi6
1 files changed, 5 insertions, 1 deletions
diff --git a/doc/guix.texi b/doc/guix.texi
index cfa5aac326..847c73ab8c 100644
--- a/doc/guix.texi
+++ b/doc/guix.texi
@@ -1483,12 +1483,16 @@ The @var{options} may be zero or more of the following:
@item --expression=@var{expr}
@itemx -e @var{expr}
-Build the package @var{expr} evaluates to.
+Build the package or derivation @var{expr} evaluates to.
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
+(@pxref{The Store Monad}). The procedure must return a derivation as a
+monadic value, which is then passed through @code{run-with-store}.
+
@item --source
@itemx -S
Build the packages' source derivations, rather than the packages