From d727a9343d861cf775645df8be5bfefd43d6c6f0 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ludovic=20Court=C3=A8s?= <ludo@gnu.org>
Date: Sun, 27 Oct 2019 19:19:14 +0100
Subject: [PATCH] derivations: Don't memoize 'derivation->bytevector'.

Its hit rate was only 8%.  Removing it reduces heap size of "guix build
libreoffice -nd" from 69MiB to 61MiB and the wall-clock time is unchanged.

* guix/derivations.scm (derivation->bytevector): Change from 'mlambda'
to 'lambda'.
---
 guix/derivations.scm | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/guix/derivations.scm b/guix/derivations.scm
index 140c22b620..706c650469 100644
--- a/guix/derivations.scm
+++ b/guix/derivations.scm
@@ -622,7 +622,7 @@ (define (write-env-var env-var port)
      (display ")" port))))
 
 (define derivation->bytevector
-  (mlambda (drv)
+  (lambda (drv)
     "Return the external representation of DRV as a UTF-8-encoded string."
     (with-fluids ((%default-port-encoding "UTF-8"))
       (call-with-values open-bytevector-output-port