From 2ddb0970a36415cb4b48ba01dfb74bff9b559d71 Mon Sep 17 00:00:00 2001
From: Jean-Paul Calderone <exarkun@twistedmatrix.com>
Date: Tue, 4 Jul 2023 12:50:48 -0400
Subject: [PATCH] access to "experimental" nix commands

---
 .circleci/config.yml | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/.circleci/config.yml b/.circleci/config.yml
index 59864675b..03af0f8a1 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -545,6 +545,9 @@ executors:
       # to push to CACHIX_NAME.  CACHIX_NAME tells cachix which cache to push
       # to.
       CACHIX_NAME: "tahoe-lafs-opensource"
+      # Let us use features marked "experimental".  For example, most/all of
+      # the `nix <subcommand>` forms.
+      NIX_CONFIG: "experimental-features = nix-command flakes"
 
 commands:
   nix-build: