From bce7526f9a7d4e26242d3128157e30c2fa7ecb0c Mon Sep 17 00:00:00 2001 From: Ludovic Courtès Date: Mon, 21 Jul 2014 22:06:36 +0200 Subject: Add comments about global memoization. * guix/build-system/gnu.scm (standard-inputs): Add comment about misplaced memoization. * guix/packages.scm (cache): Likewise. --- guix/packages.scm | 2 ++ 1 file changed, 2 insertions(+) (limited to 'guix/packages.scm') diff --git a/guix/packages.scm b/guix/packages.scm index 5c3da9f2ff..1939373f35 100644 --- a/guix/packages.scm +++ b/guix/packages.scm @@ -527,6 +527,8 @@ recursively." (define (cache package system thunk) "Memoize the return values of THUNK as the derivation of PACKAGE on SYSTEM." + ;; FIXME: This memoization should be associated with the open store, because + ;; otherwise it breaks when switching to a different store. (let ((vals (call-with-values thunk list))) ;; Use `hashq-set!' instead of `hash-set!' because `hash' returns the ;; same value for all structs (as of Guile 2.0.6), and because pointer -- cgit v1.2.3