gnu: python-astroid: Update to 2.4.2-1.5f67396.

* gnu/packages/python-xyz.scm (python-astroid): Update to 2.4.2-1.5f67396.

gnu/packages/python-xyz.scm

@@ -15370,22 +15370,21 @@ (define-public python2-larch
     (license license:gpl3+)))
 
 (define-public python-astroid
+  (let ((revision "1")
+        (commit "5f67396894c79c4661e357ec8bb03aa134a51109"))
     (package
       (name "python-astroid")
-    (version "2.4.2")
+      (version (git-version "2.4.2" revision commit))
       (source
        (origin
-       (method url-fetch)
+         ;; The current 2.4.2 release doesn't support Python 3.9.
-       (uri (pypi-uri "astroid" version))
+         (method git-fetch)
+         (uri (git-reference
+               (url "https://github.com/PyCQA/astroid")
+               (commit commit)))
+         (file-name (git-file-name name version))
          (sha256
-        (base32 "00xp5gqxidxvgg1bwd91myqzdf2fpb9cjwbdl3p7gwqvlk17hh1g"))
+          (base32 "1ir5716wqgz39jva7x9chhjy41yi3n7fkymb8snh5giwig8kyipk"))))
-       (modules '((guix build utils)))
-       (snippet
-        '(begin
-           ;; Check to see if the version pinning has been removed.
-           (substitute* "astroid/__pkginfo__.py"
-             (("==1\\.4\\.\\*") ">=1.4.0"))
-           #t))))
       (build-system python-build-system)
       (propagated-inputs
        `(("python-lazy-object-proxy" ,python-lazy-object-proxy)
@@ -15408,7 +15407,7 @@ (define-public python-astroid
 support for static inference and local name scopes.  Furthermore, astroid
 builds partial trees by inspecting living objects.")
       (license license:lgpl2.1+)
-    (properties `((python2-variant . ,(delay python2-astroid))))))
+      (properties `((python2-variant . ,(delay python2-astroid)))))))
 
 (define-public python2-astroid
   (let ((base (package-with-python2