~ruther/guix-local: gnu: ck: Limit parallelism.

20669af24a3b44573e01a8405c2a68134bcecbc4 — Greg Hogan 6 months ago a9f854c

gnu: ck: Limit parallelism.

* gnu/packages/c.scm (ck)[arguments]<#:phases>('configure): Limit
parallelism to prevent excessive test runtime.

Change-Id: I303d8ff3c5d47da4862994ad0c2942d84f736e57

patch browse .tar.gz

1 files changed, 3 insertions(+), 3 deletions(-)

M gnu/packages/c.scm

M gnu/packages/c.scm => gnu/packages/c.scm +3 -3

@@ 1572,9 1572,9 @@ Telemetry Transport (MQTT) publish-subscribe messaging protocol.")
                        ,(string-append "--prefix=" #$output)
                        ,(string-append "--mandir=" #$output "/share/man")
                        ,(string-append "--cores="
-                                       (if parallel-build?
-                                           (number->string (parallel-job-count))
-                                           "1")))))))))
+                                       ;; Tests require parallelism, and set upper limit as test
+                                       ;; runtime scales superliniearly in the number of cores.
+                                       (number->string (max 2 (min 8 (parallel-job-count))))))))))))
     (home-page "https://github.com/concurrencykit/ck")
     (synopsis "C library for concurrent systems")
     (description "Concurrency Kit (@code{ck}) provides concurrency primitives,