From b7de4098ef8a8780a3b2f9019679bcc12fc94a12 Mon Sep 17 00:00:00 2001
From: Guillaume Le Vaillant <glv@posteo.net>
Date: Sat, 13 Nov 2021 13:42:40 +0100
Subject: [PATCH] gnu: electrum: Fix build.

* gnu/packages/finance.scm (electrum)[arguments]: Add
  'relax-dnspython-version-requirement' phase.
---
 gnu/packages/finance.scm | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/gnu/packages/finance.scm b/gnu/packages/finance.scm
index 6cda53dc94..354a2f2e0f 100644
--- a/gnu/packages/finance.scm
+++ b/gnu/packages/finance.scm
@@ -548,6 +548,14 @@ (define-public electrum
                  (("sys\\.prefix")
                   (format #f "\"~a\"" out)))
                #t)))
+         (add-after 'unpack 'relax-dnspython-version-requirement
+           ;; The version requirement for dnspython>=2.0,<2.1 makes the
+           ;; sanity-check phase fail, but the application seems to be working
+           ;; fine with dnspython 2.1 (the version we have currently).
+           (lambda _
+             (substitute* "contrib/requirements/requirements.txt"
+               (("dnspython>=.*")
+                "dnspython"))))
          (add-after 'unpack 'use-libsecp256k1-input
            (lambda* (#:key inputs #:allow-other-keys)
              (substitute* "electrum/ecc_fast.py"