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-rw-r--r--gnu/packages/engineering.scm2
1 files changed, 1 insertions, 1 deletions
diff --git a/gnu/packages/engineering.scm b/gnu/packages/engineering.scm
index c9959224c49..e21b5fac75b 100644
--- a/gnu/packages/engineering.scm
+++ b/gnu/packages/engineering.scm
@@ -536,7 +536,7 @@ multipole-accelerated algorithm.")
"fasthenry-spUtils.patch"
"fasthenry-spSolve.patch"
"fasthenry-spFactor.patch"))))
- (native-inputs (list gcc-9))
+ (native-inputs (list gcc-7))
(build-system gnu-build-system)
(arguments
(list #:make-flags #~(list "CC=gcc" "RM=rm" "SHELL=sh" "all")