gnu: python-pycodestyle: Update to 2.8.0.

* gnu/packages/python-xyz.scm (python-pycodestyle): Update to 2.8.0.
[arguments]: Respect tests?.

Signed-off-by: Efraim Flashner <efraim@flashner.co.il>

gnu/packages/python-xyz.scm

@@ -6468,21 +6468,22 @@ (define-public python-socksipychain
 (define-public python-pycodestyle
   (package
     (name "python-pycodestyle")
-    (version "2.7.0")
+    (version "2.8.0")
     (source
      (origin
        (method url-fetch)
        (uri (pypi-uri "pycodestyle" version))
        (sha256
         (base32
-         "1vqwmzmjdv331kmfq3q9j3as2x7r2r49lf83r9w4147pdg8c32f3"))))
+         "0zxyrg8029lzjhima6l5nk6y0z6lm5wfp9qchz3s33j3xx3mipgd"))))
     (build-system python-build-system)
     (arguments
      `(#:phases
        (modify-phases %standard-phases
          (replace 'check
-           (lambda _
-             (invoke "pytest" "-vv"))))))
+           (lambda* (#:key tests? #:allow-other-keys)
+             (when tests?
+               (invoke "pytest" "-vv")))))))
     (native-inputs
      (list python-pytest))
     (home-page "https://pycodestyle.readthedocs.io/")