[nix-CI] Split the build inputs

Coq and the Coq libraries can now be excluded
(by setting the NOCOQ environment variable).

1 files changed, 1 insertions, 1 deletions

diff --git a/dev/ci/nix/math_classes.nix b/dev/ci/nix/math_classes.nix
index b0fa2fe795..8edc3c8358 100644
--- a/dev/ci/nix/math_classes.nix
+++ b/dev/ci/nix/math_classes.nix
@@ -1,6 +1,6 @@
 { bignums }:
 
 {
-  buildInputs = [ bignums ];
+  coqBuildInputs = [ bignums ];
   configure = "./configure.sh";
 }