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daemon: Correctly handle '--discover' with no value.

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Previously, we'd get:

  $ guix-daemon --discover
  error: basic_string::_M_construct null not valid

* nix/nix-daemon/guix-daemon.cc (parse_opt): Change second argument to
'settings.set' to properly handle case where ARG is NULL.
This commit is contained in:
Ludovic Courtès 2021-03-16 22:34:57 +01:00
parent f194fbf50e
commit bc3896db25
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GPG key ID: 090B11993D9AEBB5
1 changed files with 2 additions and 2 deletions
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4
nix/nix-daemon/guix-daemon.cc
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@ -1,5 +1,5 @@
/* GNU Guix --- Functional package management for GNU
Copyright (C) 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019 Ludovic Courtès <ludo@gnu.org>
Copyright (C) 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2021 Ludovic Courtès <ludo@gnu.org>
Copyright (C) 2006, 2010, 2012, 2014 Eelco Dolstra <e.dolstra@tudelft.nl>
This file is part of GNU Guix.
@ -268,7 +268,7 @@ parse_opt (int key, char *arg, struct argp_state *state)
break;
case GUIX_OPT_DISCOVER:
useDiscover = string_to_bool (arg);
settings.set("discover", arg);
settings.set ("discover", useDiscover ? "true" : "false");
break;
case GUIX_OPT_DEBUG:
verbosity = lvlDebug;