gnu: lirc: Build reproducibly.

* gnu/packages/patches/lirc-reproducible-build.patch: New file.
* gnu/packages/lirc.scm (lirc)[source]: Use it.
* gnu/local.mk (dist_patch_DATA): Add it.

gnu/local.mk

@@ -935,6 +935,7 @@ dist_patch_DATA =						\
   %D%/packages/patches/lierolibre-try-building-other-arch.patch	\
   %D%/packages/patches/linux-pam-no-setfsuid.patch		\
   %D%/packages/patches/lirc-localstatedir.patch			\
+  %D%/packages/patches/lirc-reproducible-build.patch		\
   %D%/packages/patches/llvm-3.5-fix-clang-build-with-gcc5.patch	\
   %D%/packages/patches/llvm-for-extempore.patch			\
   %D%/packages/patches/lm-sensors-hwmon-attrs.patch		\

gnu/packages/lirc.scm

@@ -43,7 +43,8 @@
               (sha256
                (base32
                 "1whlyifvvc7w04ahq07nnk1h18wc8j7c6wnvlb6mszravxh3qxcb"))
-              (patches (search-patches "lirc-localstatedir.patch"))))
+              (patches (search-patches "lirc-localstatedir.patch"
+                                       "lirc-reproducible-build.patch"))))
     (build-system gnu-build-system)
     (arguments
      '(#:configure-flags

gnu/packages/patches/lirc-reproducible-build.patch

@@ -0,0 +1,72 @@
+Build Lirc reproducibly.
+
+https://sourceforge.net/p/lirc/tickets/301/
+https://sourceforge.net/p/lirc/git/merge-requests/33/
+https://sourceforge.net/p/lirc/git/merge-requests/34/
+https://sourceforge.net/p/lirc/git/merge-requests/36/
+
+Index: lirc-0.10.1/tools/lirc-lsplugins.cpp
+===================================================================
+--- lirc-0.10.1.orig/tools/lirc-lsplugins.cpp
++++ lirc-0.10.1/tools/lirc-lsplugins.cpp
+@@ -415,10 +415,9 @@ static void print_header(void)
+ static void print_yaml_header(void)
+ {
+ 	static const char* const YAML_HEADER =
+-		"#\n# Generated by lirc-lsplugins --yaml (%s) at %s#\n ";
+-	const time_t now = time(NULL);
++		"#\n# Generated by lirc-lsplugins --yaml (%s)#\n ";
+ 
+-	printf(YAML_HEADER, VERSION, ctime(&now));
++	printf(YAML_HEADER, VERSION);
+ 	printf("\ndrivers:\n");
+ }
+ 
+Index: lirc-0.10.1/python-pkg/lirc/database.py
+===================================================================
+--- lirc-0.10.1.orig/python-pkg/lirc/database.py
++++ lirc-0.10.1/python-pkg/lirc/database.py
+@@ -156,7 +156,7 @@ class Database(object):
+             d['device_hint'] = hint
+ 
+         configs = {}
+-        for path in glob.glob(configdir + '/*.conf'):
++        for path in sorted(glob.glob(configdir + '/*.conf')):
+             with open(path) as f:
+                 cf = yaml.load(f.read())
+             configs[cf['config']['id']] = cf['config']
+Index: lirc-0.10.1/tools/irdb-get
+===================================================================
+--- lirc-0.10.1.orig/tools/irdb-get
++++ lirc-0.10.1/tools/irdb-get
+@@ -9,7 +9,6 @@ import fnmatch
+ import os
+ import os.path
+ import sys
+-import time
+ import urllib.error          # pylint: disable=no-name-in-module,F0401,E0611
+ import urllib.request        # pylint: disable=no-name-in-module,F0401,E0611
+ 
+@@ -193,7 +192,7 @@ def do_yaml_config():
+         lircmd_by_driver[driver].append("%s/%s" % (tokens[0], tokens[2]))
+ 
+     print("#")
+-    print("# Created by 'irdb-get yaml-config' at " + time.ctime())
++    print("# Created by 'irdb-get yaml-config'")
+     print("#")
+     print("\nlircd_by_driver:")
+     print_yaml_dict(lircd_by_driver)
+Index: lirc-0.10.1/tools/lirc-make-devinput
+===================================================================
+--- lirc-0.10.1.orig/tools/lirc-make-devinput
++++ lirc-0.10.1/tools/lirc-make-devinput
+@@ -61,8 +61,7 @@ if test -n "$lirc_map"; then
+ fi
+ 
+ 
+-echo "# Generated by $(basename $0) on $(uname -r)"
+-echo "# Date: $(date)"
++echo "# Generated by $(basename $0)"
+ cat <<EOF
+ 
+ begin remote