gnu: Adjust for python-build-system behavior change.

Commit cb72f9a773e0931ee3758c851d96007ded034e4c changed the semantics of
SITE-PACKAGES, but did not adjust all callers.

* gnu/packages/bioinformatics.scm (python-pyvcf)[arguments]: Adjust for
missing trailing slash.
* gnu/packages/maths.scm (nomad-optimizer)[arguments]: Likewise.
* gnu/packages/patchutils.scm (patchwork)[arguments]: Likewise.

1 files changed, 3 insertions, 3 deletions

diff --git a/gnu/packages/patchutils.scm b/gnu/packages/patchutils.scm
index 3ad795ac5a0..e5a03d4d281 100644
--- a/gnu/packages/patchutils.scm
+++ b/gnu/packages/patchutils.scm
@@ -390,7 +390,7 @@ application = get_wsgi_application()\n") port)))))
                (for-each (lambda (directory)
                            (copy-recursively
                             directory
-                            (string-append out-site-packages directory)))
+                            (string-append out-site-packages "/" directory)))
                          '(;; Contains the python code
                            "patchwork"
                            ;; Contains the templates for the generated HTML
@@ -403,9 +403,9 @@ application = get_wsgi_application()\n") port)))))
                            (install-file file (string-append out "/bin")))
                          (list
                           (string-append out-site-packages
-                                         "patchwork/bin/parsemail.sh")
+                                         "/patchwork/bin/parsemail.sh")
                           (string-append out-site-packages
-                                         "patchwork/bin/parsemail-batch.sh")))
+                                         "/patchwork/bin/parsemail-batch.sh")))
 
                ;; Collect the static assets, this includes JavaScript, CSS and
                ;; fonts. This is a standard Django process when running a