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Merge branch 'master' into core-updates

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Marius Bakke 2017-12-07 18:26:11 +01:00
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build-aux/build-self.scm
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@ -120,13 +120,30 @@ person's version identifier."
;; XXX: Replace with a Git commit id.
(date->string (current-date 0) "~Y~m~d.~H"))
(define (matching-guile-2.2)
"Return a Guile 2.2 with the same version as the current one or immediately
older than then current one. This is so that we do not build ABI-incompatible
objects. See <https://bugs.gnu.org/29570>."
(let loop ((packages (find-packages-by-name "guile" "2.2"))
(best #f))
(match packages
(()
best)
((head tail ...)
(if (string=? (package-version head) (version))
head
(if best
(if (version>? (package-version head) (version))
(loop tail best)
(loop tail head))
(loop tail head)))))))
(define (guile-for-build)
"Return a derivation for Guile 2.0 or 2.2, whichever matches the currently
running Guile."
(package->derivation (cond-expand
(guile-2.2
(canonical-package
(specification->package "guile@2.2")))
(canonical-package (matching-guile-2.2)))
(else
(canonical-package
(specification->package "guile@2.0"))))))