gnu: opencl-headers, opencl-clhpp and opencl-icd-loader: Replace version with %opencl-sdk-version.

These packages must be updated together. Therefore, we use a common version
variable.

* gnu/packages/opencl.scm (%opencl-sdk-version): New variable.
(opencl-headers)[version]: Replace with %opencl-sdk-version.
(opencl-clhpp)[version]: Likewise.
(opencl-icd-loader)[version]: Likewise.

Change-Id: I2cf25e2e7b951f0c0ff54a48c4e4a4fb470bff6a

1 files changed, 9 insertions, 6 deletions

diff --git a/gnu/packages/opencl.scm b/gnu/packages/opencl.scm
index 036834f567..d6fb344458 100644
--- a/gnu/packages/opencl.scm
+++ b/gnu/packages/opencl.scm
@@ -49,13 +49,16 @@
 ;; tests that require such devices are all disabled.
 ;; Check https://lists.gnu.org/archive/html/guix-devel/2018-04/msg00293.html
 
-;; If you update either of opencl-headers, opencl-clhpp or opencl-icd-loader
-;; note that they are released together (lockstep) and must be updated
-;; together.
+;; The packages opencl-headers, opencl-clhpp and opencl-icd-loader are released
+;; together (lockstep) and must be updated together. The following variable
+;; facilitates that.
+
+(define %opencl-sdk-version "2023.02.06")
+
 (define-public opencl-headers
   (package
     (name "opencl-headers")
-    (version "2023.02.06")
+    (version %opencl-sdk-version)
     (source
       (origin
         (method git-fetch)
@@ -96,7 +99,7 @@
 (define-public opencl-clhpp
   (package
     (name "opencl-clhpp")
-    (version "2023.02.06")
+    (version %opencl-sdk-version)
     (source
      (origin
        (method git-fetch)
@@ -125,7 +128,7 @@
 (define-public opencl-icd-loader
   (package
     (name "opencl-icd-loader")
-    (version "2023.02.06")
+    (version %opencl-sdk-version)
     (source (origin
               (method git-fetch)
               (uri (git-reference