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-rw-r--r--pkgs/development/interpreters/acl2/default.nix4
1 files changed, 2 insertions, 2 deletions
diff --git a/pkgs/development/interpreters/acl2/default.nix b/pkgs/development/interpreters/acl2/default.nix
index a1b59b8bf69de..51b1cfa11414a 100644
--- a/pkgs/development/interpreters/acl2/default.nix
+++ b/pkgs/development/interpreters/acl2/default.nix
@@ -1,6 +1,6 @@
 { lib, stdenv, callPackage, fetchFromGitHub, runCommandLocal, makeWrapper, substituteAll
 , sbcl, bash, which, perl, hostname
-, openssl, glucose, minisat, abc-verifier, z3, python
+, openssl, glucose, minisat, abc-verifier, z3, python2
 , certifyBooks ? true
 } @ args:
 
@@ -48,7 +48,7 @@ in stdenv.mkDerivation rec {
     which perl hostname makeWrapper
     # Some of the books require one or more of these external tools:
     openssl.out glucose minisat abc-verifier libipasir
-    z3 (python.withPackages (ps: [ ps.z3 ]))
+    z3 (python2.withPackages (ps: [ ps.z3 ]))
   ];
 
   # NOTE: Parallel building can be memory-intensive depending on the number of