diff --git a/.envrc b/.envrc
index 31e7ecc..4945571 100644
--- a/.envrc
+++ b/.envrc
@@ -54,7 +54,7 @@ use_guix()
     pkg-config openssl libxml2)
 
     # Thanks <https://lists.gnu.org/archive/html/guix-devel/2016-09/msg00859.html>
-    eval "$(guix environment --search-paths --root="$gcroot" --pure guix json-c --ad-hoc ${PACKAGES[@]} ${PACKAGES_MAINTENANCE[@]} "$@")"
+    eval "$(guix environment --search-paths --root="$gcroot" json-c --ad-hoc ${PACKAGES[@]} ${PACKAGES_MAINTENANCE[@]} "$@")"
 
     export CC=gcc