From 3d19b7fbc2f9394ad7d957f1408fef9fc0589ce6 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ludovic=20Court=C3=A8s?= <ludo@gnu.org>
Date: Tue, 12 Dec 2017 15:20:47 +0100
Subject: [PATCH] derivations: Use 'define-immutable-record-type' as
 appropriate.

This is a followup to dc673fa1131fb5d1e5ca29acb4a693cfb906986f.

* guix/derivations.scm (<derivation-output>, <derivation-input>): Use
'define-immutable-record-type'.
---
 guix/derivations.scm | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/guix/derivations.scm b/guix/derivations.scm
index 07803ca94f..b95849727b 100644
--- a/guix/derivations.scm
+++ b/guix/derivations.scm
@@ -136,7 +136,7 @@
   (env-vars derivation-builder-environment-vars)  ; list of name/value pairs
   (file-name derivation-file-name))               ; the .drv file name
 
-(define-record-type <derivation-output>
+(define-immutable-record-type <derivation-output>
   (make-derivation-output path hash-algo hash recursive?)
   derivation-output?
   (path       derivation-output-path)             ; store path
@@ -144,7 +144,7 @@
   (hash       derivation-output-hash)             ; bytevector | #f
   (recursive? derivation-output-recursive?))      ; Boolean
 
-(define-record-type <derivation-input>
+(define-immutable-record-type <derivation-input>
   (make-derivation-input path sub-derivations)
   derivation-input?
   (path            derivation-input-path)             ; store path