disable conditionality of warning disabling (#4908)

* disable conditionality of warning disabling

* add copyright notice with current year

* express version constraint in nimble file

* also needs copyright year

beacon_chain.nimble

@@ -1,3 +1,10 @@
+# beacon_chain
+# Copyright (c) 2018-2023 Status Research & Development GmbH
+# Licensed and distributed under either of
+#   * MIT license (license terms in the root directory or at https://opensource.org/licenses/MIT).
+#   * Apache v2 license (license terms in the root directory or at https://www.apache.org/licenses/LICENSE-2.0).
+# at your option. This file may not be copied, modified, or distributed except according to those terms.
+
 mode = ScriptMode.Verbose
 
 version       = "1.4.2"
@@ -6,7 +13,7 @@ description   = "The Nimbus beacon chain node is a highly efficient Ethereum 2.0
 license       = "MIT or Apache License 2.0"
 
 requires(
-  "nim >= 1.2.0",
+  "nim >= 1.6.12",
   "https://github.com/status-im/NimYAML",
   "bearssl",
   "blscurve",

config.nims

@@ -1,3 +1,10 @@
+# beacon_chain
+# Copyright (c) 2020-2023 Status Research & Development GmbH
+# Licensed and distributed under either of
+#   * MIT license (license terms in the root directory or at https://opensource.org/licenses/MIT).
+#   * Apache v2 license (license terms in the root directory or at https://www.apache.org/licenses/LICENSE-2.0).
+# at your option. This file may not be copied, modified, or distributed except according to those terms.
+
 import strutils
 
 --noNimblePath
@@ -184,8 +191,7 @@ switch("warning", "LockLevel:off")
 
 # Too many right now to read compiler output. Warnings are legitimate, but
 # should be fixed out-of-band of `unstable` branch.
-if (NimMajor, NimMinor, NimPatch) >= (1, 6, 11):
+switch("warning", "BareExcept:off")
-  switch("warning", "BareExcept:off")
 
 # Too many of these because of Defect compat in 1.2
 switch("hint", "XCannotRaiseY:off")