[bug#35011] [PATCH] gnu: gpodder: Build reproducibly.

[Pierre Langlois <pierre.langlois@gmx.com>]

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Hello Guix!

I just realised the gpodder package was not deterministic because of
'POT-Creation-Date' entries in the .po files. I forgot to check for
determinism before sending that patch, whoops! :-)

Tested with:

```
./pre-inst-env guix build --no-grafts --check --rounds=2 gpodder
(...)
/gnu/store/15l476abksby4awsnvckm3ai59fgxb9x-gpodder-3.10.7
```

Which would give us:
```
guix build: error: derivation `/gnu/store/k0my78v8n5r9xdxcip3q7dm6xzb80-gpodder-3.10.7.drv' may not be deterministic: output `/gnu/store/fmaplc6y2dv4ys3n4fcpziaw83p3smf4-gpodder-3.10.7' differs
```

Thanks!
Pierre


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From 2e45e7c875b384e80099f9ce76009e2116472ef2 Mon Sep 17 00:00:00 2001
From: Pierre Langlois <pierre.langlois@gmx.com>
Date: Tue, 26 Mar 2019 21:41:59 +0000
Subject: [PATCH] gnu: gpodder: Build reproducibly.

* gnu/packages/gpodder.scm (gpodder)[arguments]: Add 'do-not-run-msgmerge'
phase before 'install'.
---
 gnu/packages/gpodder.scm | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/gnu/packages/gpodder.scm b/gnu/packages/gpodder.scm
index ea1a3108ca..badb7f867f 100644
--- a/gnu/packages/gpodder.scm
+++ b/gnu/packages/gpodder.scm
@@ -69,6 +69,13 @@
                (substitute* "src/gpodder/util.py"
                  (("xdg-open") (string-append xdg-utils "/bin/xdg-open")))
                #t)))
+         ;; 'msgmerge' introduces non-determinism by resetting the
+         ;; POT-Creation-Date in .po files.
+         (add-before 'install 'do-not-run-msgmerge
+           (lambda _
+             (substitute* "makefile"
+               (("msgmerge") "true"))
+             #t))
          (add-before 'install 'make-po-files-writable
            (lambda _
              (for-each
--
2.21.0