From ac5de156ae5de8cb61870469863fb862b6a1205e Mon Sep 17 00:00:00 2001 From: Ludovic Courtès Date: Mon, 18 Nov 2013 23:08:20 +0100 Subject: 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'. --- doc/guix.texi | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) (limited to 'doc/guix.texi') 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 -- cgit 1.4.1