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-rw-r--r--guix/build/haskell-build-system.scm2
1 files changed, 1 insertions, 1 deletions
diff --git a/guix/build/haskell-build-system.scm b/guix/build/haskell-build-system.scm
index 7b556f6431..23d97e6602 100644
--- a/guix/build/haskell-build-system.scm
+++ b/guix/build/haskell-build-system.scm
@@ -239,7 +239,7 @@ given Haskell package."
           (list (string-append "--gen-pkg-config=" config-file))))
     (run-setuphs "register" params)
     ;; The conf file is created only when there is a library to register.
-    (unless (file-exists? config-file)
+    (when (file-exists? config-file)
       (mkdir-p config-dir)
       (let* ((config-file-name+id
               (call-with-ascii-input-file config-file (cut grep id-rx <>))))