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.

3 files changed, 5 insertions, 6 deletions

diff --git a/gnu/packages/bioinformatics.scm b/gnu/packages/bioinformatics.scm
index fb3ceb8c836..f3cc1eac89e 100644
--- a/gnu/packages/bioinformatics.scm
+++ b/gnu/packages/bioinformatics.scm
@@ -15281,8 +15281,7 @@ for the analysis and visualization of raw nanopore signal.")
             (lambda* (#:key inputs outputs #:allow-other-keys)
               (delete-file-recursively (string-append
                                          (site-packages inputs outputs)
-                                         "vcf/test"))
-              #t)))))
+                                         "/vcf/test")))))))
     (native-inputs `(("python-cython" ,python-cython)))
     (propagated-inputs
      `(("python-pysam" ,python-pysam)
diff --git a/gnu/packages/maths.scm b/gnu/packages/maths.scm
index 14aecb955dd..3ff3c14bc88 100644
--- a/gnu/packages/maths.scm
+++ b/gnu/packages/maths.scm
@@ -2009,7 +2009,7 @@ interfaces.")
            (lambda* (#:key inputs outputs #:allow-other-keys)
              (delete-file (string-append
                            (site-packages inputs outputs)
-                           "PyNomad-0.0.0-py"
+                           "/PyNomad-0.0.0-py"
                            (python-version (assoc-ref inputs "python"))
                            ".egg-info"))
              #t)))))
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")))
 
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