[PATCH v2] build-system: cargo: Add #:cargo-build-flags keyword argument.

[Danny Milosavljevic]

* guix/build-system/cargo.scm (cargo-build): Add #:cargo-build-flags keyword 
argument.
---
 guix/build-system/cargo.scm | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/guix/build-system/cargo.scm b/guix/build-system/cargo.scm
index ffc0afda3..011ea9c57 100644
--- a/guix/build-system/cargo.scm
+++ b/guix/build-system/cargo.scm
@@ -65,6 +65,7 @@ to NAME and VERSION."
                       (tests? #t)
                       (test-target #f)
                       (configure-flags #f)
+                      (cargo-build-flags ''("--release"))
                       (phases '(@ (guix build cargo-build-system)
                                   %standard-phases))
                       (outputs '("out"))
@@ -88,6 +89,7 @@ to NAME and VERSION."
                                 (source
                                  source))
                     #:system ,system
+                    #:cargo-build-flags ,cargo-build-flags
                     #:test-target ,test-target
                     #:tests? ,tests?
                     #:phases ,phases