jq: disable strptime test on darwin

This seems to fail depending on the machine's configuration, probably
something locale or timezone related.

pkgs/development/tools/jq/darwin-strptime-test.patch

@@ -0,0 +1,16 @@
+diff --git a/tests/jq.test b/tests/jq.test
+index 4a4018b..f5aa7d5 100644
+--- a/src/tests/jq.test
++++ b/src/tests/jq.test
+@@ -1144,9 +1144,9 @@ bsearch(4)
+ [1,2,3]
+ -4
+ 
+-[strptime("%Y-%m-%dT%H:%M:%SZ")|(.,mktime)]
++[strptime("%Y-%m-%dT%H:%M:%SZ")|mktime]
+ "2015-03-05T23:51:47Z"
+-[[2015,2,5,23,51,47,4,63],1425599507]
++[1425599507]
+ 
+ strftime("%Y-%m-%dT%H:%M:%SZ")
+ [2015,2,5,23,51,47,4,63]

pkgs/development/tools/jq/default.nix

@@ -24,7 +24,9 @@ stdenv.mkDerivation rec {
       url = https://patch-diff.githubusercontent.com/raw/stedolan/jq/pull/1214.diff;
       sha256 = "1w8bapnyp56di6p9casbfczfn8258rw0z16grydavdjddfm280l9";
     })
-  ];
+  ]
+    ++ stdenv.lib.optional stdenv.isDarwin ./darwin-strptime-test.patch;
+
   patchFlags = [ "-p2" ]; # `src` subdir was introduced after v1.5 was released
 
   configureFlags =