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build: Fix helpful output for emacs-build-system install phase. 

Detecting when no files were installed was broken when switching to use
cond. Test with (not (null? ...)) to fix this.

* guix/build/emacs-build-system.scm (install): Fix detecting when no files
  were installed.
This commit is contained in:
Christopher Baines 2017-09-03 19:39:11 +01:00
parent 5804c7b616
commit 4363767394
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1 changed files with 1 additions and 1 deletions
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guix/build/emacs-build-system.scm
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@ -131,7 +131,7 @@ store in '.el' files."
(target-directory (string-append out %install-suffix "/" elpa-name-ver)) (target-directory (string-append out %install-suffix "/" elpa-name-ver))
(files-to-install (find-files source install-file?))) (files-to-install (find-files source install-file?)))
(cond (cond
(files-to-install ((not (null? files-to-install))
(for-each (for-each
(lambda (file) (lambda (file)
(let* ((stripped-file (string-drop file (string-length source))) (let* ((stripped-file (string-drop file (string-length source)))