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-rw-r--r--gnu/packages/maths.scm4
1 files changed, 2 insertions, 2 deletions
diff --git a/gnu/packages/maths.scm b/gnu/packages/maths.scm
index 9f088c8575..c8b59dfd2a 100644
--- a/gnu/packages/maths.scm
+++ b/gnu/packages/maths.scm
@@ -185,7 +185,7 @@ semiconductors.")
(define-public gsl
(package
(name "gsl")
- (version "2.2")
+ (version "2.1")
(source
(origin
(method url-fetch)
@@ -193,7 +193,7 @@ semiconductors.")
version ".tar.gz"))
(sha256
(base32
- "1pyq2c0j91z955746myn29c89jwkd435s2cbj8ks2hpag6d0mr2d"))))
+ "0rhcia9jhr3p1f1wybwyllwqfs9bggz99i3mi5lpyqcpff1hdbar"))))
(build-system gnu-build-system)
(arguments
`(#:parallel-tests? #f))