From bdcfe80b41e3d973591272036461c263d3713b22 Mon Sep 17 00:00:00 2001
From: Marius Bakke <marius@gnu.org>
Date: Tue, 14 Dec 2021 00:13:30 +0100
Subject: [PATCH] gnu: python-setuptools-scm-git-archive: Don't install
 duplicate egginfo.

* gnu/packages/python-xyz.scm (python-setuptools-scm-git-archive)[arguments]:
New field.
---
 gnu/packages/python-xyz.scm | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/gnu/packages/python-xyz.scm b/gnu/packages/python-xyz.scm
index f4903b8538..270d665251 100644
--- a/gnu/packages/python-xyz.scm
+++ b/gnu/packages/python-xyz.scm
@@ -19786,6 +19786,16 @@ services.")
         (base32
          "1nii1sz5jq75ilf18bjnr11l9rz1lvdmyk66bxl7q90qan85yhjj"))))
     (build-system python-build-system)
+    (arguments
+     '(#:phases (modify-phases %standard-phases
+                  (add-after 'unpack 'dont-install-defunct-egginfo
+                    (lambda _
+                      ;; When a ".git" directory is missing, the setup.py
+                      ;; script invokes setuptools.setup twice, once with
+                      ;; "0" as the version.  Prevent that.
+                      (substitute* "setup.py"
+                        (("if not isdir\\('\\.git'\\):")
+                         "if False:")))))))
     (native-inputs
      (list python-pytest))
     (propagated-inputs