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-rw-r--r--guix/scripts/environment.scm4
1 files changed, 3 insertions, 1 deletions
diff --git a/guix/scripts/environment.scm b/guix/scripts/environment.scm
index 44f490043c..5a6abd00fb 100644
--- a/guix/scripts/environment.scm
+++ b/guix/scripts/environment.scm
@@ -79,7 +79,9 @@ existing enviroment variables with additional search paths."
                (let ((current (getenv variable)))
                  (setenv variable
                          (if (and current (not pure?))
-                             (string-append value separator current)
+                             (if separator
+                                 (string-append value separator current)
+                                 value)
                              value)))))
             (evaluate-profile-search-paths profile paths))