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-rw-r--r--guix/build/utils.scm3
1 files changed, 2 insertions, 1 deletions
diff --git a/guix/build/utils.scm b/guix/build/utils.scm
index 76180e67e0..6c40d70e21 100644
--- a/guix/build/utils.scm
+++ b/guix/build/utils.scm
@@ -144,7 +144,8 @@
 
 (define (%store-directory)
   "Return the directory name of the store."
-  (or (getenv "NIX_STORE")
+  (or (getenv "NIX_STORE_DIR")          ;outside of builder
+      (getenv "NIX_STORE")              ;inside builder, set by the daemon
       "/gnu/store"))
 
 (define (store-file-name? file)