Disable futimens on Darwin.

See #22938

.gitlab/gen_ci.hs

@@ -409,6 +409,8 @@ opsysVariables Amd64 (Darwin {}) =
           , "ac_cv_func_clock_gettime" =: "no"
           -- # Only newer OS Xs support utimensat. See #17895
           , "ac_cv_func_utimensat" =: "no"
+          -- # Only newer OS Xs support futimens. See #22938
+          , "ac_cv_func_futimens" =: "no"
           , "LANG" =: "en_US.UTF-8"
           , "CONFIGURE_ARGS" =: "--with-intree-gmp --with-system-libffi"
           -- Fonts can't be installed on darwin

.gitlab/jobs.yaml

@@ -480,6 +480,7 @@
       "TEST_ENV": "x86_64-darwin-validate",
       "XZ_OPT": "-9",
       "ac_cv_func_clock_gettime": "no",
+      "ac_cv_func_futimens": "no",
       "ac_cv_func_utimensat": "no"
     }
   },
@@ -2478,6 +2479,7 @@
       "TEST_ENV": "x86_64-darwin-release",
       "XZ_OPT": "-9",
       "ac_cv_func_clock_gettime": "no",
+      "ac_cv_func_futimens": "no",
       "ac_cv_func_utimensat": "no"
     }
   },
@@ -3590,6 +3592,7 @@
       "NIX_SYSTEM": "x86_64-darwin",
       "TEST_ENV": "x86_64-darwin-validate",
       "ac_cv_func_clock_gettime": "no",
+      "ac_cv_func_futimens": "no",
       "ac_cv_func_utimensat": "no"
     }
   },