04/15: gnu: python2-pandas: Fix build with Python 2.7.17.

[guix-commits]

mbakke pushed a commit to branch master
in repository guix.

commit 3987715415532aea14c179650bac331ec436882c
Author: Marius Bakke <address@hidden>
AuthorDate: Sun Mar 15 13:30:11 2020 +0100

    gnu: python2-pandas: Fix build with Python 2.7.17.
    
    While at it, fix the inheritance.
    
    * gnu/packages/python-science.scm (python2-pandas): Use INHERIT instead of
    PACKAGE/INHERIT.
    [source](modules, snippet): New fields.
---
 gnu/packages/python-science.scm | 29 +++++++++++++++++++----------
 1 file changed, 19 insertions(+), 10 deletions(-)

diff --git a/gnu/packages/python-science.scm b/gnu/packages/python-science.scm
index 8dcc6e7..4b3db6d 100644
--- a/gnu/packages/python-science.scm
+++ b/gnu/packages/python-science.scm
@@ -4,7 +4,7 @@
 ;;; Copyright © 2016 Ben Woodcroft <address@hidden>
 ;;; Copyright © 2016 Hartmut Goebel <address@hidden>
 ;;; Copyright © 2016 Efraim Flashner <address@hidden>
-;;; Copyright © 2016, 2017, 2018, 2019 Marius Bakke <address@hidden>
+;;; Copyright © 2016, 2017, 2018, 2019, 2020 Marius Bakke <address@hidden>
 ;;; Copyright © 2019 Tobias Geerinckx-Rice <address@hidden>
 ;;; Copyright © 2019 Maxim Cournoyer <address@hidden>
 ;;; Copyright © 2019 Giacomo Leidi <address@hidden>
@@ -277,12 +277,21 @@ doing practical, real world data analysis in Python.")
 (define-public python2-pandas
   (let ((pandas (package-with-python2
                  (strip-python2-variant python-pandas))))
-    (package/inherit
-     pandas
-     (version "0.24.2")
-     (source (origin
-               (method url-fetch)
-               (uri (pypi-uri "pandas" version))
-               (sha256
-                (base32
-                 "18imlm8xbhcbwy4wa957a1fkamrcb0z988z006jpfda3ki09z4ag")))))))
+    (package
+      (inherit pandas)
+      (version "0.24.2")
+      (source (origin
+                (method url-fetch)
+                (uri (pypi-uri "pandas" version))
+                (sha256
+                 (base32
+                  "18imlm8xbhcbwy4wa957a1fkamrcb0z988z006jpfda3ki09z4ag"))
+                (modules '((guix build utils)))
+                (snippet
+                 '(begin
+                    ;; Adjust for renamed error message in Python 2.7.17.  
Taken
+                    ;; from <https://github.com/pandas-dev/pandas/pull/29294>.
+                    (substitute* "pandas/io/parsers.py"
+                      (("if 'NULL byte' in msg:")
+                       "if 'NULL byte' in msg or 'line contains NUL' in msg:"))
+                    #t)))))))