gnu: Add python-pylama.

* gnu/packages/python-check.scm (python-pylama): New variable.

gnu/packages/python-check.scm

@@ -1110,6 +1110,47 @@ (define-public python-mypy-minimal
                    (delete 'ensure-no-mtimes-pre-1980))))
      (native-inputs '()))))
 
+(define-public python-pylama
+  (package
+    (name "python-pylama")
+    (version "7.7.1")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (pypi-uri "pylama" version))
+       (sha256
+        (base32
+         "13vx7daqz2918y9s8q3v2i3xaq3ah43a9p58srqi6hqskkpm7blv"))))
+    (build-system python-build-system)
+    (arguments
+     `(#:phases (modify-phases %standard-phases
+                  (add-after 'unpack 'disable-failing-tests
+                    (lambda _
+                      ;; Fails with: "ImportError: cannot import name
+                      ;; 'commented_out_code_line_numbers' from 'eradicate'".
+                      (delete-file "pylama/lint/pylama_eradicate.py")
+                      ;; Requires python-astroid, which fails to build on
+                      ;; Python 3.9+ (see:
+                      ;; https://github.com/PyCQA/astroid/issues/881).
+                      (delete-file "pylama/lint/pylama_pylint.py"))))))
+    (native-inputs
+     `(("python-py" ,python-py)
+       ("python-pytest" ,python-pytest)
+       ("python-radon" ,python-radon)))
+    (propagated-inputs
+     `(("python-mccabe" ,python-mccabe)
+       ("python-mypy", python-mypy-minimal)
+       ("python-pycodestyle" ,python-pycodestyle)
+       ("python-pydocstyle" ,python-pydocstyle)
+       ("python-pyflakes" ,python-pyflakes)))
+    (home-page "https://github.com/klen/pylama")
+    (synopsis "Code audit tool for python")
+    (description "Pylama is a code audit tool for Python and JavaScript to check
+for style, syntax and other code health metrics.  It is essentially a
+convenient wrapper above tools such as Pyflakes, pydocstyle, pycodestyle and
+McCabe, among others.")
+    (license license:lgpl3+)))
+
 (define-public python-robber
   (package
     (name "python-robber")