utils: Add 'false-if-file-not-found'.
authorLudovic Courtès <ludo@gnu.org>
Sun, 11 Mar 2018 21:04:12 +0000 (22:04 +0100)
committerLudovic Courtès <ludo@gnu.org>
Sun, 11 Mar 2018 21:04:39 +0000 (22:04 +0100)
commit5c6391b33acaaae75746f6ae30089d4aec14c349
tree34d09d3b0fe68b08c1539212e817bb0756f48785
parent5e268faf85c60b5e12cbc742c5e3bf3d20771cb9
utils: Add 'false-if-file-not-found'.

* guix/build/utils.scm (false-if-file-not-found): New macro.
guix/build/utils.scm